v28.2.0

Prepare changelog for v28.2.0
v28.2.0-rc.1
2023-09-26 12:07:30 +01:00 · 2023-09-26 12:07:26 +01:00 · 2023-09-19 12:34:58 +01:00 · 2023-09-19 12:34:55 +01:00 · 2023-09-18 17:08:53 +00:00 · 2023-09-18 14:49:24 +00:00
214 changed files with 23013 additions and 5623 deletions
@@ -66,15 +66,12 @@ module.exports = {
        // Disabled tests are a reality for now but as soon as all of the xits are
        // eliminated, we should enforce this.
        "jest/no-disabled-tests": "off",
-        // TODO: There are many tests with invalid expects that should be fixed,
-        // https://github.com/matrix-org/matrix-js-sdk/issues/2976
-        "jest/valid-expect": "off",
        // Also treat "oldBackendOnly" as a test function.
        // Used in some crypto tests.
        "jest/no-standalone-expect": [
            "error",
            {
-                additionalTestBlockFunctions: ["beforeAll", "beforeEach", "oldBackendOnly"],
+                additionalTestBlockFunctions: ["beforeAll", "beforeEach", "oldBackendOnly", "newBackendOnly"],
            },
        ],
    },
@@ -3,4 +3,6 @@
 /package.json             @matrix-org/element-web-app-team
 /yarn.lock                @matrix-org/element-web-app-team
 /src/webrtc               @matrix-org/element-call-reviewers
+/src/matrixrtc               @matrix-org/element-call-reviewers
 /spec/*/webrtc            @matrix-org/element-call-reviewers
+/spec/*/matrixrtc            @matrix-org/element-call-reviewers
@@ -23,7 +23,7 @@ jobs:
              )
            )
        steps:
-            - uses: tibdex/backport@2e217641d82d02ba0603f46b1aeedefb258890ac # v2
+            - uses: tibdex/backport@9565281eda0731b1d20c4025c43339fb0a23812e # v2
              with:
                  labels_template: "<%= JSON.stringify([...labels, 'X-Release-Blocker']) %>"
                  # We can't use GITHUB_TOKEN here or CI won't run on the new PR
@@ -0,0 +1,31 @@
+# Triggers after the "Downstream artifacts" build has finished, to run the
+# cypress tests (with access to repo secrets)
+
+name: matrix-react-sdk Cypress End to End Tests
+on:
+    workflow_run:
+        workflows: ["Build downstream artifacts"]
+        types:
+            - completed
+
+concurrency:
+    group: ${{ github.workflow }}-${{ github.event.workflow_run.head_branch || github.run_id }}
+    cancel-in-progress: ${{ github.event.workflow_run.event == 'pull_request' }}
+
+jobs:
+    cypress:
+        name: Cypress
+        uses: matrix-org/matrix-react-sdk/.github/workflows/cypress.yaml@v3.79.0
+        permissions:
+            actions: read
+            issues: read
+            statuses: write
+            pull-requests: read
+        secrets:
+            # secrets are not automatically shared with called workflows, so share the cypress dashboard key, and the Kiwi login details
+            CYPRESS_RECORD_KEY: ${{ secrets.CYPRESS_RECORD_KEY }}
+            TCMS_USERNAME: ${{ secrets.TCMS_USERNAME }}
+            TCMS_PASSWORD: ${{ secrets.TCMS_PASSWORD }}
+        with:
+            react-sdk-repository: matrix-org/matrix-react-sdk
+            rust-crypto: true
@@ -22,7 +22,7 @@ jobs:
                  path: docs

            - name: 📤 Deploy to Netlify
-              uses: matrix-org/netlify-pr-preview@v1
+              uses: matrix-org/netlify-pr-preview@v2
              with:
                  path: docs
                  owner: ${{ github.event.workflow_run.head_repository.owner.login }}
@@ -0,0 +1,27 @@
+name: Build downstream artifacts
+on:
+    # We only want the Rust Crypto Cypress tests on merge queue to prevent regressions
+    # from creeping in. They take a long time to run and consume 4 concurrent runners.
+    # Anyone working on Rust Crypto is able to run the tests locally if required.
+    merge_group:
+        types: [checks_requested]
+
+    # For now at least, we don't run this or the cypress-tests against pushes
+    # to develop or master.
+    #
+    # Note that if we later choose to do so, we'll need to find a way to stop
+    # the results in Cypress Cloud from clobbering those from the 'develop'
+    # branch of matrix-react-sdk.
+    #
+    #push:
+    #    branches: [develop, master]
+concurrency:
+    group: ${{ github.workflow }}-${{ github.ref }}
+    cancel-in-progress: true
+jobs:
+    build-element-web:
+        name: Build element-web
+        uses: matrix-org/matrix-react-sdk/.github/workflows/element-web.yaml@v3.79.0
+        with:
+            matrix-js-sdk-sha: ${{ github.sha }}
+            react-sdk-repository: matrix-org/matrix-react-sdk
@@ -20,7 +20,7 @@ jobs:
        runs-on: ubuntu-latest
        steps:
            - name: Notify matrix-react-sdk repo that a new SDK build is on develop so it can CI against it
-              uses: peter-evans/repository-dispatch@26b39ed245ab8f31526069329e112ab2fb224588 # v2
+              uses: peter-evans/repository-dispatch@bf47d102fdb849e755b0b0023ea3e81a44b6f570 # v2
              with:
                  token: ${{ secrets.ELEMENT_BOT_TOKEN }}
                  repository: ${{ matrix.repo }}
@@ -11,7 +11,7 @@ jobs:
        runs-on: ubuntu-latest
        steps:
            - name: 🧮 Checkout code
-              uses: actions/checkout@v3
+              uses: actions/checkout@v4

            - name: 🔧 Yarn cache
              uses: actions/setup-node@v3
@@ -24,18 +24,16 @@ jobs:

            - name: 🚀 Publish to npm
              id: npm-publish
-              uses: JS-DevTools/npm-publish@0f451a94170d1699fd50710966d48fb26194d939 # v1
+              uses: JS-DevTools/npm-publish@5a85faf05d2ade2d5b6682bfe5359915d5159c6c # v2.2.1
              with:
                  token: ${{ secrets.NPM_TOKEN }}
                  access: public
                  tag: next
+                  ignore-scripts: false

            - name: 🎖️ Add `latest` dist-tag to final releases
-              if: github.event.release.prerelease == false
-              run: |
-                  package=$(cat package.json | jq -er .name)
-                  npm dist-tag add "$package@$release" latest
+              if: github.event.release.prerelease == false && steps.npm-publish.outputs.id
+              run: npm dist-tag add "$release" latest
              env:
-                  # JS-DevTools/npm-publish overrides `NODE_AUTH_TOKEN` with `INPUT_TOKEN` in .npmrc
-                  INPUT_TOKEN: ${{ secrets.NPM_TOKEN }}
-                  release: ${{ steps.npm-publish.outputs.version }}
+                  NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+                  release: ${{ steps.npm-publish.outputs.id }}
@@ -9,10 +9,10 @@ jobs:
        runs-on: ubuntu-latest
        steps:
            - name: 🧮 Checkout code
-              uses: actions/checkout@v3
+              uses: actions/checkout@v4

            - name: 🧮 Checkout gh-pages
-              uses: actions/checkout@v3
+              uses: actions/checkout@v4
              with:
                  ref: gh-pages
                  path: _docs
@@ -11,7 +11,7 @@ jobs:
    # This is a workaround for https://github.com/SonarSource/SonarJS/issues/578
    prepare:
        name: Prepare
-        if: github.event.workflow_run.event != 'merge_group'
+        if: github.event.workflow_run.conclusion == 'success' && github.event.workflow_run.event != 'merge_group'
        runs-on: ubuntu-latest
        outputs:
            reportPaths: ${{ steps.extra_args.outputs.reportPaths }}
@@ -36,7 +36,7 @@ jobs:

    sonarqube:
        name: 🩻 SonarQube
-        if: github.event.workflow_run.event != 'merge_group'
+        if: github.event.workflow_run.conclusion == 'success' && github.event.workflow_run.event != 'merge_group'
        needs: prepare
        uses: matrix-org/matrix-js-sdk/.github/workflows/sonarcloud.yml@develop
        secrets:
@@ -13,7 +13,7 @@ jobs:
        name: "Typescript Syntax Check"
        runs-on: ubuntu-latest
        steps:
-            - uses: actions/checkout@v3
+            - uses: actions/checkout@v4

            - uses: actions/setup-node@v3
              with:
@@ -39,7 +39,7 @@ jobs:
        name: "ESLint"
        runs-on: ubuntu-latest
        steps:
-            - uses: actions/checkout@v3
+            - uses: actions/checkout@v4

            - uses: actions/setup-node@v3
              with:
@@ -55,7 +55,7 @@ jobs:
        name: "JSDoc Checker"
        runs-on: ubuntu-latest
        steps:
-            - uses: actions/checkout@v3
+            - uses: actions/checkout@v4

            - uses: actions/setup-node@v3
              with:
@@ -18,10 +18,10 @@ jobs:
        strategy:
            matrix:
                specs: [browserify, integ, unit]
-                node: [16, 18, latest]
+                node: [18, latest]
        steps:
            - name: Checkout code
-              uses: actions/checkout@v3
+              uses: actions/checkout@v4

            - name: Setup Node
              uses: actions/setup-node@v3
@@ -50,6 +50,9 @@ jobs:
              env:
                  JEST_SONAR_UNIQUE_OUTPUT_NAME: true

+                  # tell jest to use coloured output
+                  FORCE_COLOR: true
+
            - name: Move coverage files into place
              if: env.ENABLE_COVERAGE == 'true'
              run: mv coverage/lcov.info coverage/${{ matrix.node }}-${{ matrix.specs }}.lcov.info
@@ -9,7 +9,7 @@ jobs:
    upgrade:
        runs-on: ubuntu-latest
        steps:
-            - uses: actions/checkout@v3
+            - uses: actions/checkout@v4

            - uses: actions/setup-node@v3
              with:
@@ -20,7 +20,7 @@ jobs:

            - name: Create Pull Request
              id: cpr
-              uses: peter-evans/create-pull-request@284f54f989303d2699d373481a0cfa13ad5a6666 # v5
+              uses: peter-evans/create-pull-request@153407881ec5c347639a548ade7d8ad1d6740e38 # v5
              with:
                  token: ${{ secrets.ELEMENT_BOT_TOKEN }}
                  branch: actions/upgrade-deps
@@ -24,3 +24,6 @@ out

 # This file is owned, parsed, and generated by allchange, which doesn't comply with prettier
 /CHANGELOG.md
+
+# This file is also autogenerated
+/spec/test-utils/test-data/index.ts
@@ -1,10 +1,199 @@
-Changes in [25.2.0-rc.4](https://github.com/matrix-org/matrix-js-sdk/releases/tag/v25.2.0-rc.4) (2023-05-16)
+Changes in [28.2.0](https://github.com/matrix-org/matrix-js-sdk/releases/tag/v28.2.0) (2023-09-26)
+==================================================================================================
+
+## 🦖 Deprecations
+ * Implement `getEncryptionInfoForEvent` and deprecate `getEventEncryptionInfo` ([\#3693](https://github.com/matrix-org/matrix-js-sdk/pull/3693)).
+ * **The Browserify artifact is being deprecated, scheduled for removal in the October 10th release cycle. (#3189)**
+
+## ✨ Features
+ * Delete knocked room when knock membership changes ([\#3729](https://github.com/matrix-org/matrix-js-sdk/pull/3729)). Contributed by @maheichyk.
+ * Introduce MatrixRTCSession lower level group call primitive ([\#3663](https://github.com/matrix-org/matrix-js-sdk/pull/3663)).
+ * Sync knock rooms ([\#3703](https://github.com/matrix-org/matrix-js-sdk/pull/3703)). Contributed by @maheichyk.
+
+## 🐛 Bug Fixes
+ * Dont access indexed db when undefined ([\#3707](https://github.com/matrix-org/matrix-js-sdk/pull/3707)). Contributed by @finsterwalder.
+ * Don't reset unread count when adding a synthetic receipt ([\#3706](https://github.com/matrix-org/matrix-js-sdk/pull/3706)). Fixes #3684. Contributed by @andybalaam.
+
+Changes in [28.1.0](https://github.com/matrix-org/matrix-js-sdk/releases/tag/v28.1.0) (2023-09-12)
 ============================================================================================================

 ## 🦖 Deprecations
- * Deprecate device methods in MatrixClient ([\#3357](https://github.com/matrix-org/matrix-js-sdk/pull/3357)).
+ * Deprecate `MatrixClient.checkUserTrust` ([\#3691](https://github.com/matrix-org/matrix-js-sdk/pull/3691)).
+ * Deprecate `MatrixClient.{prepare,create}KeyBackupVersion` in favour of new `CryptoApi.resetKeyBackup` API ([\#3689](https://github.com/matrix-org/matrix-js-sdk/pull/3689)).
+ * **The Browserify artifact is being deprecated, scheduled for removal in the October 10th release cycle. (#3189)**

 ## ✨ Features
+ * Allow calls without ICE/TURN/STUN servers ([\#3695](https://github.com/matrix-org/matrix-js-sdk/pull/3695)).
+ * Emit summary update event ([\#3687](https://github.com/matrix-org/matrix-js-sdk/pull/3687)). Fixes vector-im/element-web#26033.
+ * ElementR: Update `CryptoApi.userHasCrossSigningKeys` ([\#3646](https://github.com/matrix-org/matrix-js-sdk/pull/3646)). Contributed by @florianduros.
+ * Add `join_rule` field to /publicRooms response ([\#3673](https://github.com/matrix-org/matrix-js-sdk/pull/3673)). Contributed by @charlynguyen.
+ * Use sender instead of content.creator field on m.room.create events ([\#3675](https://github.com/matrix-org/matrix-js-sdk/pull/3675)).
+
+## 🐛 Bug Fixes
+ * Provide better error for ICE Server SyntaxError ([\#3694](https://github.com/matrix-org/matrix-js-sdk/pull/3694)). Fixes vector-im/element-web#21804.
+ * Legacy crypto: re-check key backup after `bootstrapSecretStorage` ([\#3692](https://github.com/matrix-org/matrix-js-sdk/pull/3692)). Fixes vector-im/element-web#26115.
+
+Changes in [28.0.0](https://github.com/matrix-org/matrix-js-sdk/releases/tag/v28.0.0) (2023-08-29)
+==================================================================================================
+
+## 🚨 BREAKING CHANGES
+ * Set minimum supported Matrix 1.1 version (drop legacy r0 versions) ([\#3007](https://github.com/matrix-org/matrix-js-sdk/pull/3007)). Fixes vector-im/element-web#16876.
+
+## 🦖 Deprecations
+ * **The Browserify artifact is being deprecated, scheduled for removal in the October 10th release cycle. (#3189)**
+
+## ✨ Features
+ * ElementR: Add `CryptoApi.requestVerificationDM` ([\#3643](https://github.com/matrix-org/matrix-js-sdk/pull/3643)). Contributed by @florianduros.
+ * Implement `CryptoApi.checkKeyBackupAndEnable` ([\#3633](https://github.com/matrix-org/matrix-js-sdk/pull/3633)). Fixes vector-im/crypto-internal#111 and vector-im/crypto-internal#112.
+
+## 🐛 Bug Fixes
+ * ElementR: Process all verification events, not just requests ([\#3650](https://github.com/matrix-org/matrix-js-sdk/pull/3650)). Contributed by @florianduros.
+
+Changes in [27.2.0](https://github.com/matrix-org/matrix-js-sdk/releases/tag/v27.2.0) (2023-08-15)
+==================================================================================================
+
+## 🦖 Deprecations
+ * **The Browserify artifact is being deprecated, scheduled for removal in the October 10th release cycle. (#3189)**
+
+## ✨ Features
+ * Allow knocking rooms ([\#3647](https://github.com/matrix-org/matrix-js-sdk/pull/3647)). Contributed by @charlynguyen.
+ * Bump pagination limit to account for threaded events ([\#3638](https://github.com/matrix-org/matrix-js-sdk/pull/3638)).
+ * ElementR: Add `CryptoApi.findVerificationRequestDMInProgress` ([\#3601](https://github.com/matrix-org/matrix-js-sdk/pull/3601)). Contributed by @florianduros.
+ * Export more into the public interface ([\#3614](https://github.com/matrix-org/matrix-js-sdk/pull/3614)).
+
+## 🐛 Bug Fixes
+ * Fix wrong handling of encrypted rooms when loading them from sync accumulator ([\#3640](https://github.com/matrix-org/matrix-js-sdk/pull/3640)). Fixes vector-im/element-web#25803.
+ * Skip processing thread roots and fetching threads list when support is disabled ([\#3642](https://github.com/matrix-org/matrix-js-sdk/pull/3642)).
+ * Ensure we don't overinflate the total notification count ([\#3634](https://github.com/matrix-org/matrix-js-sdk/pull/3634)). Fixes vector-im/element-web#25803.
+
+Changes in [27.1.0](https://github.com/matrix-org/matrix-js-sdk/releases/tag/v27.1.0) (2023-08-01)
+==================================================================================================
+
+## 🦖 Deprecations
+ * **The Browserify artifact is being deprecated, scheduled for removal in the October 10th release cycle. (#3189)**
+
+## ✨ Features
+ * ElementR: Add `CryptoApi.getCrossSigningKeyId` ([\#3619](https://github.com/matrix-org/matrix-js-sdk/pull/3619)). Contributed by @florianduros.
+ * ElementR: Stub `CheckOwnCrossSigningTrust`, import cross signing keys and verify local device in `bootstrapCrossSigning` ([\#3608](https://github.com/matrix-org/matrix-js-sdk/pull/3608)). Contributed by @florianduros.
+ * Specify /preview_url requests as low priority ([\#3609](https://github.com/matrix-org/matrix-js-sdk/pull/3609)). Fixes vector-im/element-web#7292.
+ * Element-R: support for displaying QR codes during verification ([\#3588](https://github.com/matrix-org/matrix-js-sdk/pull/3588)). Fixes vector-im/crypto-internal#124.
+ * Add support for scanning QR codes during verification, with Rust crypto ([\#3565](https://github.com/matrix-org/matrix-js-sdk/pull/3565)).
+ * Add methods to influence set_presence on /sync API calls ([\#3578](https://github.com/matrix-org/matrix-js-sdk/pull/3578)).
+
+## 🐛 Bug Fixes
+ * Fix threads ending up with chunks of their timelines missing ([\#3618](https://github.com/matrix-org/matrix-js-sdk/pull/3618)). Fixes vector-im/element-web#24466.
+ * Ensure we do not clobber a newer RR with an older unthreaded one ([\#3617](https://github.com/matrix-org/matrix-js-sdk/pull/3617)). Fixes vector-im/element-web#25806.
+ * Fix registration check your emails stage regression ([\#3616](https://github.com/matrix-org/matrix-js-sdk/pull/3616)).
+ * Fix how `Room::eventShouldLiveIn` handles replies to unknown parents ([\#3615](https://github.com/matrix-org/matrix-js-sdk/pull/3615)). Fixes vector-im/element-web#22603.
+ * Only send threaded read receipts if threads support is enabled ([\#3612](https://github.com/matrix-org/matrix-js-sdk/pull/3612)).
+ * ElementR: Fix `userId` parameter usage in `CryptoApi#getVerificationRequestsToDeviceInProgress` ([\#3611](https://github.com/matrix-org/matrix-js-sdk/pull/3611)). Contributed by @florianduros.
+ * Fix edge cases around non-thread relations to thread roots and read receipts ([\#3607](https://github.com/matrix-org/matrix-js-sdk/pull/3607)).
+ * Fix read receipt sending behaviour around thread roots ([\#3600](https://github.com/matrix-org/matrix-js-sdk/pull/3600)).
+ * Export typed event emitter key types ([\#3597](https://github.com/matrix-org/matrix-js-sdk/pull/3597)). Fixes #3506.
+ * Element-R: ensure that `userHasCrossSigningKeys` uses up-to-date data ([\#3599](https://github.com/matrix-org/matrix-js-sdk/pull/3599)). Fixes vector-im/element-web#25773.
+ * Fix sending `auth: null` due to broken types around UIA ([\#3594](https://github.com/matrix-org/matrix-js-sdk/pull/3594)).
+
+Changes in [27.0.0](https://github.com/matrix-org/matrix-js-sdk/releases/tag/v27.0.0) (2023-07-18)
+==================================================================================================
+
+## 🚨 BREAKING CHANGES
+ * Drop support for Node 16 ([\#3533](https://github.com/matrix-org/matrix-js-sdk/pull/3533)).
+ * Improve types around login, registration, UIA and identity servers ([\#3537](https://github.com/matrix-org/matrix-js-sdk/pull/3537)).
+
+## 🦖 Deprecations
+ * **The Browserify artifact is being deprecated, scheduled for removal in the October 10th release cycle. (#3189)**
+ * Simplify `MatrixClient::setPowerLevel` API ([\#3570](https://github.com/matrix-org/matrix-js-sdk/pull/3570)). Fixes vector-im/element-web#13900 and #1844.
+ * Deprecate `VerificationRequest.getQRCodeBytes` and replace it with the asynchronous `generateQRCode`. ([\#3562](https://github.com/matrix-org/matrix-js-sdk/pull/3562)).
+ * Deprecate `VerificationRequest.beginKeyVerification()` in favour of `VerificationRequest.startVerification()`. ([\#3528](https://github.com/matrix-org/matrix-js-sdk/pull/3528)).
+ * Deprecate `Crypto.VerificationRequest` application event, replacing it with `Crypto.VerificationRequestReceived`. ([\#3514](https://github.com/matrix-org/matrix-js-sdk/pull/3514)).
+
+## ✨ Features
+ * Throw saner error when peeking has its room pulled out from under it ([\#3577](https://github.com/matrix-org/matrix-js-sdk/pull/3577)). Fixes vector-im/element-web#18679.
+ * OIDC: Log in ([\#3554](https://github.com/matrix-org/matrix-js-sdk/pull/3554)). Contributed by @kerryarchibald.
+ * Prevent threads code from making identical simultaneous API hits ([\#3541](https://github.com/matrix-org/matrix-js-sdk/pull/3541)). Fixes vector-im/element-web#25395.
+ * Update IUnsigned type to be extensible ([\#3547](https://github.com/matrix-org/matrix-js-sdk/pull/3547)).
+ * add stop() api to BackupManager for clean shutdown ([\#3553](https://github.com/matrix-org/matrix-js-sdk/pull/3553)).
+ * Log the message ID of any undecryptable to-device messages ([\#3543](https://github.com/matrix-org/matrix-js-sdk/pull/3543)).
+ * Ignore thread relations on state events for consistency with edits ([\#3540](https://github.com/matrix-org/matrix-js-sdk/pull/3540)).
+ * OIDC: validate id token ([\#3531](https://github.com/matrix-org/matrix-js-sdk/pull/3531)). Contributed by @kerryarchibald.
+
+## 🐛 Bug Fixes
+ * Fix read receipt sending behaviour around thread roots ([\#3600](https://github.com/matrix-org/matrix-js-sdk/pull/3600)).
+ * Fix `TypedEventEmitter::removeAllListeners(void)` not working ([\#3561](https://github.com/matrix-org/matrix-js-sdk/pull/3561)).
+ * Don't allow Olm unwedging rate-limiting to race ([\#3549](https://github.com/matrix-org/matrix-js-sdk/pull/3549)). Fixes vector-im/element-web#25716.
+ * Fix an instance of failed to decrypt error when an in flight `/keys/query` fails. ([\#3486](https://github.com/matrix-org/matrix-js-sdk/pull/3486)).
+ * Use the right anchor emoji for SAS verification ([\#3534](https://github.com/matrix-org/matrix-js-sdk/pull/3534)).
+ * fix a bug which caused the wrong emoji to be shown during SAS device verification. ([\#3523](https://github.com/matrix-org/matrix-js-sdk/pull/3523)).
+
+Changes in [26.2.0](https://github.com/matrix-org/matrix-js-sdk/releases/tag/v26.2.0) (2023-07-04)
+==================================================================================================
+
+## 🦖 Deprecations
+ * The Browserify artifact is being deprecated, scheduled for removal in the October 10th release cycle. ([\#3189](https://github.com/matrix-org/matrix-js-sdk/issues/3189)).
+ * ElementR: Add `CryptoApi#bootstrapSecretStorage` ([\#3483](https://github.com/matrix-org/matrix-js-sdk/pull/3483)). Contributed by @florianduros.
+ * Deprecate `MatrixClient.findVerificationRequestDMInProgress`, `MatrixClient.getVerificationRequestsToDeviceInProgress`, and `MatrixClient.requestVerification`, in favour of methods in `CryptoApi`. ([\#3474](https://github.com/matrix-org/matrix-js-sdk/pull/3474)).
+ * Introduce a new `Crypto.VerificationRequest` interface, and deprecate direct access to the old `VerificationRequest` class. Also deprecate some related classes that were exported from `src/crypto/verification/request/VerificationRequest` ([\#3449](https://github.com/matrix-org/matrix-js-sdk/pull/3449)).
+
+## ✨ Features
+ * OIDC: navigate to authorization endpoint ([\#3499](https://github.com/matrix-org/matrix-js-sdk/pull/3499)). Contributed by @kerryarchibald.
+ * Support for interactive device verification in Element-R. ([\#3505](https://github.com/matrix-org/matrix-js-sdk/pull/3505)).
+ * Support for interactive device verification in Element-R. ([\#3508](https://github.com/matrix-org/matrix-js-sdk/pull/3508)).
+ * Support for interactive device verification in Element-R. ([\#3490](https://github.com/matrix-org/matrix-js-sdk/pull/3490)). Fixes vector-im/element-web#25316.
+ * Element-R: Store cross signing keys in secret storage ([\#3498](https://github.com/matrix-org/matrix-js-sdk/pull/3498)). Contributed by @florianduros.
+ * OIDC: add dynamic client registration util function ([\#3481](https://github.com/matrix-org/matrix-js-sdk/pull/3481)). Contributed by @kerryarchibald.
+ * Add getLastUnthreadedReceiptFor utility to Thread delegating to the underlying Room ([\#3493](https://github.com/matrix-org/matrix-js-sdk/pull/3493)).
+ * ElementR: Add `rust-crypto#createRecoveryKeyFromPassphrase` implementation ([\#3472](https://github.com/matrix-org/matrix-js-sdk/pull/3472)). Contributed by @florianduros.
+
+## 🐛 Bug Fixes
+ * Aggregate relations regardless of whether event fits into the timeline ([\#3496](https://github.com/matrix-org/matrix-js-sdk/pull/3496)). Fixes vector-im/element-web#25596.
+ * Fix bug where switching media caused media in subsequent calls to fail ([\#3489](https://github.com/matrix-org/matrix-js-sdk/pull/3489)).
+ * Fix: remove polls from room state on redaction ([\#3475](https://github.com/matrix-org/matrix-js-sdk/pull/3475)). Fixes vector-im/element-web#25573. Contributed by @kerryarchibald.
+ * Fix export type `GeneratedSecretStorageKey` ([\#3479](https://github.com/matrix-org/matrix-js-sdk/pull/3479)). Contributed by @florianduros.
+ * Close IDB database before deleting it to prevent spurious unexpected close errors ([\#3478](https://github.com/matrix-org/matrix-js-sdk/pull/3478)). Fixes vector-im/element-web#25597.
+
+Changes in [26.1.0](https://github.com/matrix-org/matrix-js-sdk/releases/tag/v26.1.0) (2023-06-20)
+==================================================================================================
+
+## 🦖 Deprecations
+ * Introduce a new `Crypto.Verifier` interface, and deprecate direct access to `VerificationBase`, `SAS` and `ReciprocateQRCode` ([\#3414](https://github.com/matrix-org/matrix-js-sdk/pull/3414)).
+
+## ✨ Features
+ * Add `rust-crypto#isCrossSigningReady` implementation ([\#3462](https://github.com/matrix-org/matrix-js-sdk/pull/3462)). Contributed by @florianduros.
+ * OIDC: Validate `m.authentication` configuration ([\#3419](https://github.com/matrix-org/matrix-js-sdk/pull/3419)). Contributed by @kerryarchibald.
+ * ElementR: Add `CryptoApi.getCrossSigningStatus` ([\#3452](https://github.com/matrix-org/matrix-js-sdk/pull/3452)). Contributed by @florianduros.
+ * Extend stats summary with call device and user count based on room state ([\#3424](https://github.com/matrix-org/matrix-js-sdk/pull/3424)). Contributed by @toger5.
+ * Update MSC3912 implementation to use `with_rel_type` instead of `with_relations` ([\#3420](https://github.com/matrix-org/matrix-js-sdk/pull/3420)).
+ * Export thread-related types from SDK ([\#3447](https://github.com/matrix-org/matrix-js-sdk/pull/3447)). Contributed by @stas-demydiuk.
+ * Use correct /v3 prefix for /refresh ([\#3016](https://github.com/matrix-org/matrix-js-sdk/pull/3016)). Contributed by @davidisaaclee.
+
+## 🐛 Bug Fixes
+ * Fix thread list being ordered based on all updates ([\#3458](https://github.com/matrix-org/matrix-js-sdk/pull/3458)). Fixes vector-im/element-web#25522.
+ * Fix: handle `baseUrl` with trailing slash in `fetch.getUrl` ([\#3455](https://github.com/matrix-org/matrix-js-sdk/pull/3455)). Fixes vector-im/element-web#25526. Contributed by @kerryarchibald.
+ * use cli.canSupport to determine intentional mentions support ([\#3445](https://github.com/matrix-org/matrix-js-sdk/pull/3445)). Fixes vector-im/element-web#25497. Contributed by @kerryarchibald.
+ * Make sliding sync linearize processing of sync requests ([\#3442](https://github.com/matrix-org/matrix-js-sdk/pull/3442)).
+ * Fix edge cases around 2nd order relations and threads ([\#3437](https://github.com/matrix-org/matrix-js-sdk/pull/3437)).
+
+Changes in [26.0.1](https://github.com/matrix-org/matrix-js-sdk/releases/tag/v26.0.1) (2023-06-09)
+==================================================================================================
+
+## 🐛 Bug Fixes
+ * Fix: handle `baseUrl` with trailing slash in `fetch.getUrl` ([\#3455](https://github.com/matrix-org/matrix-js-sdk/pull/3455)). Fixes vector-im/element-web#25526. Contributed by @kerryarchibald.
+
+Changes in [26.0.0](https://github.com/matrix-org/matrix-js-sdk/releases/tag/v26.0.0) (2023-06-06)
+==================================================================================================
+
+## 🚨 BREAKING CHANGES
+ * Ensure we do not add relations to the wrong timeline ([\#3427](https://github.com/matrix-org/matrix-js-sdk/pull/3427)). Fixes vector-im/element-web#25450 and vector-im/element-web#25494.
+ * Deprecate `QrCodeEvent`, `SasEvent` and `VerificationEvent` ([\#3386](https://github.com/matrix-org/matrix-js-sdk/pull/3386)).
+
+## 🦖 Deprecations
+ * Move crypto classes into a separate namespace ([\#3385](https://github.com/matrix-org/matrix-js-sdk/pull/3385)).
+
+## ✨ Features
+ * Mention deno support in the README ([\#3417](https://github.com/matrix-org/matrix-js-sdk/pull/3417)). Contributed by @sigmaSd.
+ * Mark room version 10 as safe ([\#3425](https://github.com/matrix-org/matrix-js-sdk/pull/3425)).
+ * Prioritise entirely supported flows for UIA ([\#3402](https://github.com/matrix-org/matrix-js-sdk/pull/3402)).
+ * Add methods to terminate idb worker ([\#3362](https://github.com/matrix-org/matrix-js-sdk/pull/3362)).
 * Total summary count ([\#3351](https://github.com/matrix-org/matrix-js-sdk/pull/3351)). Contributed by @toger5.
 * Audio concealment ([\#3349](https://github.com/matrix-org/matrix-js-sdk/pull/3349)). Contributed by @toger5.

@@ -13,6 +202,11 @@ Changes in [25.2.0-rc.4](https://github.com/matrix-org/matrix-js-sdk/releases/ta
 * Keep measuring a call feed's volume after a stream replacement ([\#3361](https://github.com/matrix-org/matrix-js-sdk/pull/3361)). Fixes vector-im/element-call#1051.
 * Element-R: Avoid uploading a new fallback key at every `/sync` ([\#3338](https://github.com/matrix-org/matrix-js-sdk/pull/3338)). Fixes vector-im/element-web#25215.
 * Accumulate receipts for the main thread and unthreaded separately ([\#3339](https://github.com/matrix-org/matrix-js-sdk/pull/3339)). Fixes vector-im/element-web#24629.
+ * Remove spec non-compliant extended glob format ([\#3423](https://github.com/matrix-org/matrix-js-sdk/pull/3423)). Fixes vector-im/element-web#25474.
+ * Fix bug where original event was inserted into timeline instead of the edit event ([\#3398](https://github.com/matrix-org/matrix-js-sdk/pull/3398)). Contributed by @andybalaam.
+ * Only add a local receipt if it's after an existing receipt ([\#3399](https://github.com/matrix-org/matrix-js-sdk/pull/3399)). Contributed by @andybalaam.
+ * Attempt a potential workaround for stuck notifs ([\#3384](https://github.com/matrix-org/matrix-js-sdk/pull/3384)). Fixes vector-im/element-web#25406. Contributed by @andybalaam.
+ * Fix verification bug with `pendingEventOrdering: "chronological"` ([\#3382](https://github.com/matrix-org/matrix-js-sdk/pull/3382)).

 Changes in [25.1.1](https://github.com/matrix-org/matrix-js-sdk/releases/tag/v25.1.1) (2023-05-16)
 ==================================================================================================
@@ -11,6 +11,8 @@
 This is the [Matrix](https://matrix.org) Client-Server SDK for JavaScript and TypeScript. This SDK can be run in a
 browser or in Node.js.

+#### Minimum Matrix server version: v1.1
+
 The Matrix specification is constantly evolving - while this SDK aims for maximum backwards compatibility, it only
 guarantees that a feature will be supported for at least 4 spec releases. For example, if a feature the js-sdk supports
 is removed in v1.4 then the feature is _eligible_ for removal from the SDK when v1.8 is released. This SDK has no
@@ -21,6 +23,8 @@ endpoints from before Matrix 1.1, for example.

 ## In a browser

+### Note, the browserify build has been deprecated. Please use a bundler like webpack or vite instead.
+
 Download the browser version from
 https://github.com/matrix-org/matrix-js-sdk/releases/latest and add that as a
 `<script>` to your page. There will be a global variable `matrixcs`
@@ -55,6 +59,8 @@ client.publicRooms(function (err, data) {
 See below for how to include libolm to enable end-to-end-encryption. Please check
 [the Node.js terminal app](examples/node) for a more complex example.

+You can also use the sdk with [Deno](https://deno.land/) (`import npm:matrix-js-sdk`) but its not officialy supported.
+
 To start the client:

 ```javascript
@@ -23,11 +23,19 @@ const config: Config = {
    collectCoverageFrom: ["<rootDir>/src/**/*.{js,ts}"],
    coverageReporters: ["text-summary", "lcov"],
    testResultsProcessor: "@casualbot/jest-sonar-reporter",
+
+    // Always print out a summary if there are any failing tests. Normally
+    // a summary is only printed if there are more than 20 test *suites*.
+    reporters: [["default", { summaryThreshold: 0 }]],
 };

 // if we're running under GHA, enable the GHA reporter
 if (env["GITHUB_ACTIONS"] !== undefined) {
-    const reporters: Config["reporters"] = [["github-actions", { silent: false }], "summary"];
+    const reporters: Config["reporters"] = [
+        ["github-actions", { silent: false }],
+        // as above: always show a summary if there were any failing tests.
+        ["summary", { summaryThreshold: 0 }],
+    ];

    // if we're running against the develop branch, also enable the slow test reporter
    if (env["GITHUB_REF"] == "refs/heads/develop") {
@@ -1,9 +1,9 @@
 {
    "name": "matrix-js-sdk",
-    "version": "25.2.0-rc.4",
+    "version": "28.2.0",
    "description": "Matrix Client-Server SDK for Javascript",
    "engines": {
-        "node": ">=16.0.0"
+        "node": ">=18.0.0"
    },
    "scripts": {
        "prepublishOnly": "yarn build",
@@ -55,13 +55,15 @@
    ],
    "dependencies": {
        "@babel/runtime": "^7.12.5",
-        "@matrix-org/matrix-sdk-crypto-js": "^0.1.0-alpha.9",
+        "@matrix-org/matrix-sdk-crypto-wasm": "^1.2.3-alpha.0",
        "another-json": "^0.2.0",
        "bs58": "^5.0.0",
        "content-type": "^1.0.4",
+        "jwt-decode": "^3.1.2",
        "loglevel": "^1.7.1",
        "matrix-events-sdk": "0.0.1",
-        "matrix-widget-api": "^1.3.1",
+        "matrix-widget-api": "^1.6.0",
+        "oidc-client-ts": "^2.2.4",
        "p-retry": "4",
        "sdp-transform": "^2.14.1",
        "unhomoglyph": "^1.0.6",
@@ -95,22 +97,20 @@
        "allchange": "^1.0.6",
        "babel-jest": "^29.0.0",
        "babelify": "^10.0.0",
-        "better-docs": "^2.4.0-beta.9",
        "browserify": "^17.0.0",
        "browserify-swap": "^0.2.2",
        "debug": "^4.3.4",
-        "docdash": "^2.0.0",
        "domexception": "^4.0.0",
-        "eslint": "8.39.0",
+        "eslint": "8.48.0",
        "eslint-config-google": "^0.14.0",
-        "eslint-config-prettier": "^8.5.0",
+        "eslint-config-prettier": "^9.0.0",
        "eslint-import-resolver-typescript": "^3.5.1",
        "eslint-plugin-import": "^2.26.0",
        "eslint-plugin-jest": "^27.1.6",
-        "eslint-plugin-jsdoc": "^43.0.6",
+        "eslint-plugin-jsdoc": "^46.0.0",
        "eslint-plugin-matrix-org": "^1.0.0",
        "eslint-plugin-tsdoc": "^0.2.17",
-        "eslint-plugin-unicorn": "^46.0.0",
+        "eslint-plugin-unicorn": "^48.0.0",
        "exorcist": "^2.0.0",
        "fake-indexeddb": "^4.0.0",
        "fetch-mock-jest": "^1.5.1",
@@ -125,6 +125,7 @@
        "ts-node": "^10.9.1",
        "tsify": "^5.0.2",
        "typedoc": "^0.24.0",
+        "typedoc-plugin-coverage": "^2.1.0",
        "typedoc-plugin-mdn-links": "^3.0.3",
        "typedoc-plugin-missing-exports": "^2.0.0",
        "typedoc-plugin-versions": "^0.2.3",
@@ -32,8 +32,6 @@ import { syncPromise } from "./test-utils/test-utils";
 import { createClient, IStartClientOpts } from "../src/matrix";
 import { ICreateClientOpts, IDownloadKeyResult, MatrixClient, PendingEventOrdering } from "../src/client";
 import { MockStorageApi } from "./MockStorageApi";
-import { encodeUri } from "../src/utils";
-import { IKeyBackupSession } from "../src/crypto/keybackup";
 import { IKeysUploadResponse, IUploadKeysRequest } from "../src/client";
 import { ISyncResponder } from "./test-utils/SyncResponder";

@@ -92,7 +90,7 @@ export class TestClient implements IE2EKeyReceiver, ISyncResponder {
        logger.log(this + ": starting");
        this.httpBackend.when("GET", "/versions").respond(200, {
            // we have tests that rely on support for lazy-loading members
-            versions: ["r0.5.0"],
+            versions: ["v1.1"],
        });
        this.httpBackend.when("GET", "/pushrules").respond(200, {});
        this.httpBackend.when("POST", "/filter").respond(200, { filter_id: "fid" });
@@ -214,21 +212,6 @@ export class TestClient implements IE2EKeyReceiver, ISyncResponder {
        });
    }

-    /**
-     * Set up expectations that the client will query key backups for a particular session
-     */
-    public expectKeyBackupQuery(roomId: string, sessionId: string, status: number, response: IKeyBackupSession) {
-        this.httpBackend
-            .when(
-                "GET",
-                encodeUri("/room_keys/keys/$roomId/$sessionId", {
-                    $roomId: roomId,
-                    $sessionId: sessionId,
-                }),
-            )
-            .respond(status, response);
-    }
-
    /**
     * get the uploaded curve25519 device key
     *
@@ -1,117 +0,0 @@
-/*
-Copyright 2023 The Matrix.org Foundation C.I.C.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-import fetchMock from "fetch-mock-jest";
-import "fake-indexeddb/auto";
-import { IDBFactory } from "fake-indexeddb";
-
-import { CRYPTO_BACKENDS, InitCrypto } from "../test-utils/test-utils";
-import { createClient, MatrixClient, UIAuthCallback } from "../../src";
-
-afterEach(() => {
-    // reset fake-indexeddb after each test, to make sure we don't leak connections
-    // cf https://github.com/dumbmatter/fakeIndexedDB#wipingresetting-the-indexeddb-for-a-fresh-state
-    // eslint-disable-next-line no-global-assign
-    indexedDB = new IDBFactory();
-});
-
-const TEST_USER_ID = "@alice:localhost";
-const TEST_DEVICE_ID = "xzcvb";
-
-/**
- * Integration tests for cross-signing functionality.
- *
- * These tests work by intercepting HTTP requests via fetch-mock rather than mocking out bits of the client, so as
- * to provide the most effective integration tests possible.
- */
-describe.each(Object.entries(CRYPTO_BACKENDS))("cross-signing (%s)", (backend: string, initCrypto: InitCrypto) => {
-    // oldBackendOnly is an alternative to `it` or `test` which will skip the test if we are running against the
-    // Rust backend. Once we have full support in the rust sdk, it will go away.
-    const oldBackendOnly = backend === "rust-sdk" ? test.skip : test;
-
-    let aliceClient: MatrixClient;
-
-    beforeEach(async () => {
-        // anything that we don't have a specific matcher for silently returns a 404
-        fetchMock.catch(404);
-        fetchMock.config.warnOnFallback = false;
-
-        const homeserverUrl = "https://alice-server.com";
-        aliceClient = createClient({
-            baseUrl: homeserverUrl,
-            userId: TEST_USER_ID,
-            accessToken: "akjgkrgjs",
-            deviceId: TEST_DEVICE_ID,
-        });
-
-        await initCrypto(aliceClient);
-    });
-
-    afterEach(async () => {
-        await aliceClient.stopClient();
-        fetchMock.mockReset();
-    });
-
-    describe("bootstrapCrossSigning (before initialsync completes)", () => {
-        oldBackendOnly("publishes keys if none were yet published", async () => {
-            // have account_data requests return an empty object
-            fetchMock.get("express:/_matrix/client/r0/user/:userId/account_data/:type", {});
-
-            // we expect a request to upload signatures for our device ...
-            fetchMock.post({ url: "path:/_matrix/client/v3/keys/signatures/upload", name: "upload-sigs" }, {});
-
-            // ... and one to upload the cross-signing keys (with UIA)
-            fetchMock.post(
-                { url: "path:/_matrix/client/unstable/keys/device_signing/upload", name: "upload-keys" },
-                {},
-            );
-
-            // provide a UIA callback, so that the cross-signing keys are uploaded
-            const authDict = { type: "test" };
-            const uiaCallback: UIAuthCallback<void> = async (makeRequest) => {
-                await makeRequest(authDict);
-            };
-
-            // now bootstrap cross signing, and check it resolves successfully
-            await aliceClient.bootstrapCrossSigning({
-                authUploadDeviceSigningKeys: uiaCallback,
-            });
-
-            // check the cross-signing keys upload
-            expect(fetchMock.called("upload-keys")).toBeTruthy();
-            const [, keysOpts] = fetchMock.lastCall("upload-keys")!;
-            const keysBody = JSON.parse(keysOpts!.body as string);
-            expect(keysBody.auth).toEqual(authDict); // check uia dict was passed
-            // there should be a key of each type
-            // master key is signed by the device
-            expect(keysBody).toHaveProperty(`master_key.signatures.[${TEST_USER_ID}].[ed25519:${TEST_DEVICE_ID}]`);
-            const masterKeyId = Object.keys(keysBody.master_key.keys)[0];
-            // ssk and usk are signed by the master key
-            expect(keysBody).toHaveProperty(`self_signing_key.signatures.[${TEST_USER_ID}].[${masterKeyId}]`);
-            expect(keysBody).toHaveProperty(`user_signing_key.signatures.[${TEST_USER_ID}].[${masterKeyId}]`);
-            const sskId = Object.keys(keysBody.self_signing_key.keys)[0];
-
-            // check the publish call
-            expect(fetchMock.called("upload-sigs")).toBeTruthy();
-            const [, sigsOpts] = fetchMock.lastCall("upload-sigs")!;
-            const body = JSON.parse(sigsOpts!.body as string);
-            // there should be a signature for our device, by our self-signing key.
-            expect(body).toHaveProperty(
-                `[${TEST_USER_ID}].[${TEST_DEVICE_ID}].signatures.[${TEST_USER_ID}].[${sskId}]`,
-            );
-        });
-    });
-});
@@ -0,0 +1,342 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import fetchMock from "fetch-mock-jest";
+import "fake-indexeddb/auto";
+import { IDBFactory } from "fake-indexeddb";
+
+import { CRYPTO_BACKENDS, InitCrypto, syncPromise } from "../../test-utils/test-utils";
+import { AuthDict, createClient, CryptoEvent, MatrixClient } from "../../../src";
+import { mockInitialApiRequests, mockSetupCrossSigningRequests } from "../../test-utils/mockEndpoints";
+import { encryptAES } from "../../../src/crypto/aes";
+import { CryptoCallbacks, CrossSigningKey } from "../../../src/crypto-api";
+import { SECRET_STORAGE_ALGORITHM_V1_AES } from "../../../src/secret-storage";
+import { ISyncResponder, SyncResponder } from "../../test-utils/SyncResponder";
+import { E2EKeyReceiver } from "../../test-utils/E2EKeyReceiver";
+import {
+    MASTER_CROSS_SIGNING_PRIVATE_KEY_BASE64,
+    SELF_CROSS_SIGNING_PRIVATE_KEY_BASE64,
+    SELF_CROSS_SIGNING_PUBLIC_KEY_BASE64,
+    SIGNED_CROSS_SIGNING_KEYS_DATA,
+    USER_CROSS_SIGNING_PRIVATE_KEY_BASE64,
+} from "../../test-utils/test-data";
+import { E2EKeyResponder } from "../../test-utils/E2EKeyResponder";
+
+afterEach(() => {
+    // reset fake-indexeddb after each test, to make sure we don't leak connections
+    // cf https://github.com/dumbmatter/fakeIndexedDB#wipingresetting-the-indexeddb-for-a-fresh-state
+    // eslint-disable-next-line no-global-assign
+    indexedDB = new IDBFactory();
+});
+
+const TEST_USER_ID = "@alice:localhost";
+const TEST_DEVICE_ID = "xzcvb";
+
+/**
+ * Integration tests for cross-signing functionality.
+ *
+ * These tests work by intercepting HTTP requests via fetch-mock rather than mocking out bits of the client, so as
+ * to provide the most effective integration tests possible.
+ */
+describe.each(Object.entries(CRYPTO_BACKENDS))("cross-signing (%s)", (backend: string, initCrypto: InitCrypto) => {
+    // newBackendOnly is the opposite to `oldBackendOnly`: it will skip the test if we are running against the legacy
+    // backend. Once we drop support for legacy crypto, it will go away.
+    const newBackendOnly = backend === "rust-sdk" ? test : test.skip;
+
+    let aliceClient: MatrixClient;
+
+    /** an object which intercepts `/sync` requests from {@link #aliceClient} */
+    let syncResponder: ISyncResponder;
+
+    /** an object which intercepts `/keys/query` requests on the test homeserver */
+    let e2eKeyResponder: E2EKeyResponder;
+
+    // Encryption key used to encrypt cross signing keys
+    const encryptionKey = new Uint8Array(32);
+
+    /**
+     * Create the {@link CryptoCallbacks}
+     */
+    function createCryptoCallbacks(): CryptoCallbacks {
+        return {
+            getSecretStorageKey: (keys, name) => {
+                return Promise.resolve<[string, Uint8Array]>(["key_id", encryptionKey]);
+            },
+        };
+    }
+
+    beforeEach(async () => {
+        // anything that we don't have a specific matcher for silently returns a 404
+        fetchMock.catch(404);
+        fetchMock.config.warnOnFallback = false;
+
+        const homeserverUrl = "https://alice-server.com";
+        aliceClient = createClient({
+            baseUrl: homeserverUrl,
+            userId: TEST_USER_ID,
+            accessToken: "akjgkrgjs",
+            deviceId: TEST_DEVICE_ID,
+            cryptoCallbacks: createCryptoCallbacks(),
+        });
+
+        syncResponder = new SyncResponder(homeserverUrl);
+        e2eKeyResponder = new E2EKeyResponder(homeserverUrl);
+        /** an object which intercepts `/keys/upload` requests on the test homeserver */
+        new E2EKeyReceiver(homeserverUrl);
+
+        await initCrypto(aliceClient);
+    });
+
+    afterEach(async () => {
+        await aliceClient.stopClient();
+        fetchMock.mockReset();
+    });
+
+    /**
+     * Create cross-signing keys and publish the keys
+     *
+     * @param authDict - The parameters to as the `auth` dict in the key upload request.
+     * @see https://spec.matrix.org/v1.6/client-server-api/#authentication-types
+     */
+    async function bootstrapCrossSigning(authDict: AuthDict): Promise<void> {
+        await aliceClient.getCrypto()?.bootstrapCrossSigning({
+            authUploadDeviceSigningKeys: (makeRequest) => makeRequest(authDict).then(() => undefined),
+        });
+    }
+
+    describe("bootstrapCrossSigning (before initialsync completes)", () => {
+        it("publishes keys if none were yet published", async () => {
+            mockSetupCrossSigningRequests();
+
+            // provide a UIA callback, so that the cross-signing keys are uploaded
+            const authDict = { type: "test" };
+            await bootstrapCrossSigning(authDict);
+
+            // check the cross-signing keys upload
+            expect(fetchMock.called("upload-keys")).toBeTruthy();
+            const [, keysOpts] = fetchMock.lastCall("upload-keys")!;
+            const keysBody = JSON.parse(keysOpts!.body as string);
+            expect(keysBody.auth).toEqual(authDict); // check uia dict was passed
+            // there should be a key of each type
+            // master key is signed by the device
+            expect(keysBody).toHaveProperty(`master_key.signatures.[${TEST_USER_ID}].[ed25519:${TEST_DEVICE_ID}]`);
+            const masterKeyId = Object.keys(keysBody.master_key.keys)[0];
+            // ssk and usk are signed by the master key
+            expect(keysBody).toHaveProperty(`self_signing_key.signatures.[${TEST_USER_ID}].[${masterKeyId}]`);
+            expect(keysBody).toHaveProperty(`user_signing_key.signatures.[${TEST_USER_ID}].[${masterKeyId}]`);
+            const sskId = Object.keys(keysBody.self_signing_key.keys)[0];
+
+            // check the publish call
+            expect(fetchMock.called("upload-sigs")).toBeTruthy();
+            const [, sigsOpts] = fetchMock.lastCall("upload-sigs")!;
+            const body = JSON.parse(sigsOpts!.body as string);
+            // there should be a signature for our device, by our self-signing key.
+            expect(body).toHaveProperty(
+                `[${TEST_USER_ID}].[${TEST_DEVICE_ID}].signatures.[${TEST_USER_ID}].[${sskId}]`,
+            );
+        });
+
+        newBackendOnly("get cross signing keys from secret storage and import them", async () => {
+            // Return public cross signing keys
+            e2eKeyResponder.addCrossSigningData(SIGNED_CROSS_SIGNING_KEYS_DATA);
+
+            mockInitialApiRequests(aliceClient.getHomeserverUrl());
+
+            // Encrypt the private keys and return them in the /sync response as if they are in Secret Storage
+            const masterKey = await encryptAES(
+                MASTER_CROSS_SIGNING_PRIVATE_KEY_BASE64,
+                encryptionKey,
+                "m.cross_signing.master",
+            );
+            const selfSigningKey = await encryptAES(
+                SELF_CROSS_SIGNING_PRIVATE_KEY_BASE64,
+                encryptionKey,
+                "m.cross_signing.self_signing",
+            );
+            const userSigningKey = await encryptAES(
+                USER_CROSS_SIGNING_PRIVATE_KEY_BASE64,
+                encryptionKey,
+                "m.cross_signing.user_signing",
+            );
+
+            syncResponder.sendOrQueueSyncResponse({
+                next_batch: 1,
+                account_data: {
+                    events: [
+                        {
+                            type: "m.cross_signing.master",
+                            content: {
+                                encrypted: {
+                                    key_id: masterKey,
+                                },
+                            },
+                        },
+                        {
+                            type: "m.cross_signing.self_signing",
+                            content: {
+                                encrypted: {
+                                    key_id: selfSigningKey,
+                                },
+                            },
+                        },
+                        {
+                            type: "m.cross_signing.user_signing",
+                            content: {
+                                encrypted: {
+                                    key_id: userSigningKey,
+                                },
+                            },
+                        },
+                        {
+                            type: "m.secret_storage.key.key_id",
+                            content: {
+                                key: "key_id",
+                                algorithm: SECRET_STORAGE_ALGORITHM_V1_AES,
+                            },
+                        },
+                    ],
+                },
+            });
+            await aliceClient.startClient();
+            await syncPromise(aliceClient);
+
+            // we expect a request to upload signatures for our device ...
+            fetchMock.post({ url: "path:/_matrix/client/v3/keys/signatures/upload", name: "upload-sigs" }, {});
+
+            // we expect the UserTrustStatusChanged event to be fired after the cross signing keys import
+            const userTrustStatusChangedPromise = new Promise<string>((resolve) =>
+                aliceClient.on(CryptoEvent.UserTrustStatusChanged, resolve),
+            );
+
+            const authDict = { type: "test" };
+            await bootstrapCrossSigning(authDict);
+
+            // Check if the UserTrustStatusChanged event was fired
+            expect(await userTrustStatusChangedPromise).toBe(aliceClient.getUserId());
+
+            // Expect the signature to be uploaded
+            expect(fetchMock.called("upload-sigs")).toBeTruthy();
+            const [, sigsOpts] = fetchMock.lastCall("upload-sigs")!;
+            const body = JSON.parse(sigsOpts!.body as string);
+            // the device should have a signature with the public self cross signing keys.
+            expect(body).toHaveProperty(
+                `[${TEST_USER_ID}].[${TEST_DEVICE_ID}].signatures.[${TEST_USER_ID}].[ed25519:${SELF_CROSS_SIGNING_PUBLIC_KEY_BASE64}]`,
+            );
+        });
+    });
+
+    describe("getCrossSigningStatus()", () => {
+        it("should return correct values without bootstrapping cross-signing", async () => {
+            mockSetupCrossSigningRequests();
+
+            const crossSigningStatus = await aliceClient.getCrypto()!.getCrossSigningStatus();
+
+            // Expect the cross signing keys to be unavailable
+            expect(crossSigningStatus).toStrictEqual({
+                publicKeysOnDevice: false,
+                privateKeysInSecretStorage: false,
+                privateKeysCachedLocally: { masterKey: false, userSigningKey: false, selfSigningKey: false },
+            });
+        });
+
+        it("should return correct values after bootstrapping cross-signing", async () => {
+            mockSetupCrossSigningRequests();
+
+            // provide a UIA callback, so that the cross-signing keys are uploaded
+            const authDict = { type: "test" };
+            await bootstrapCrossSigning(authDict);
+
+            const crossSigningStatus = await aliceClient.getCrypto()!.getCrossSigningStatus();
+
+            // Expect the cross signing keys to be available
+            expect(crossSigningStatus).toStrictEqual({
+                publicKeysOnDevice: true,
+                privateKeysInSecretStorage: false,
+                privateKeysCachedLocally: { masterKey: true, userSigningKey: true, selfSigningKey: true },
+            });
+        });
+    });
+
+    describe("isCrossSigningReady()", () => {
+        it("should return false if cross-signing is not bootstrapped", async () => {
+            mockSetupCrossSigningRequests();
+
+            const isCrossSigningReady = await aliceClient.getCrypto()!.isCrossSigningReady();
+
+            expect(isCrossSigningReady).toBeFalsy();
+        });
+
+        it("should return true after bootstrapping cross-signing", async () => {
+            mockSetupCrossSigningRequests();
+            await bootstrapCrossSigning({ type: "test" });
+
+            const isCrossSigningReady = await aliceClient.getCrypto()!.isCrossSigningReady();
+
+            expect(isCrossSigningReady).toBeTruthy();
+        });
+    });
+
+    describe("getCrossSigningKeyId", () => {
+        /**
+         * Intercept /keys/device_signing/upload request and return the cross signing keys
+         * https://spec.matrix.org/v1.7/client-server-api/#post_matrixclientv3keysdevice_signingupload
+         *
+         * @returns the cross signing keys
+         */
+        function awaitCrossSigningKeysUpload() {
+            return new Promise<any>((resolve) => {
+                fetchMock.post(
+                    // legacy crypto uses /unstable/; /v3/ is correct
+                    {
+                        url: new RegExp("/_matrix/client/(unstable|v3)/keys/device_signing/upload"),
+                        name: "upload-keys",
+                    },
+                    (url, options) => {
+                        const content = JSON.parse(options.body as string);
+                        resolve(content);
+                        return {};
+                    },
+                    // Override the routes define in `mockSetupCrossSigningRequests`
+                    { overwriteRoutes: true },
+                );
+            });
+        }
+
+        it("should return the cross signing key id for each cross signing key", async () => {
+            mockSetupCrossSigningRequests();
+
+            // Intercept cross signing keys upload
+            const crossSigningKeysPromise = awaitCrossSigningKeysUpload();
+
+            // provide a UIA callback, so that the cross-signing keys are uploaded
+            const authDict = { type: "test" };
+            await bootstrapCrossSigning(authDict);
+            // Get the cross signing keys
+            const crossSigningKeys = await crossSigningKeysPromise;
+
+            const getPubKey = (crossSigningKey: any) => Object.values(crossSigningKey!.keys)[0];
+
+            const masterKeyId = await aliceClient.getCrypto()!.getCrossSigningKeyId();
+            expect(masterKeyId).toBe(getPubKey(crossSigningKeys.master_key));
+
+            const selfSigningKeyId = await aliceClient.getCrypto()!.getCrossSigningKeyId(CrossSigningKey.SelfSigning);
+            expect(selfSigningKeyId).toBe(getPubKey(crossSigningKeys.self_signing_key));
+
+            const userSigningKeyId = await aliceClient.getCrypto()!.getCrossSigningKeyId(CrossSigningKey.UserSigning);
+            expect(userSigningKeyId).toBe(getPubKey(crossSigningKeys.user_signing_key));
+        });
+    });
+});
@@ -0,0 +1,799 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import fetchMock from "fetch-mock-jest";
+import "fake-indexeddb/auto";
+import { IDBFactory } from "fake-indexeddb";
+
+import { createClient, CryptoEvent, ICreateClientOpts, MatrixClient, TypedEventEmitter } from "../../../src";
+import { SyncResponder } from "../../test-utils/SyncResponder";
+import { E2EKeyReceiver } from "../../test-utils/E2EKeyReceiver";
+import { E2EKeyResponder } from "../../test-utils/E2EKeyResponder";
+import { mockInitialApiRequests } from "../../test-utils/mockEndpoints";
+import { awaitDecryption, CRYPTO_BACKENDS, InitCrypto, syncPromise } from "../../test-utils/test-utils";
+import * as testData from "../../test-utils/test-data";
+import { KeyBackupInfo } from "../../../src/crypto-api/keybackup";
+import { IKeyBackup } from "../../../src/crypto/backup";
+
+const ROOM_ID = testData.TEST_ROOM_ID;
+
+/** The homeserver url that we give to the test client, and where we intercept /sync, /keys, etc requests. */
+const TEST_HOMESERVER_URL = "https://alice-server.com";
+
+const TEST_USER_ID = "@alice:localhost";
+const TEST_DEVICE_ID = "xzcvb";
+
+afterEach(() => {
+    // reset fake-indexeddb after each test, to make sure we don't leak connections
+    // cf https://github.com/dumbmatter/fakeIndexedDB#wipingresetting-the-indexeddb-for-a-fresh-state
+    // eslint-disable-next-line no-global-assign
+    indexedDB = new IDBFactory();
+});
+
+enum MockKeyUploadEvent {
+    KeyUploaded = "KeyUploaded",
+}
+
+type MockKeyUploadEventHandlerMap = {
+    [MockKeyUploadEvent.KeyUploaded]: (roomId: string, sessionId: string, backupVersion: string) => void;
+};
+
+/*
+ * Test helper. Returns an event emitter that will emit an event every time fetchmock sees a request to backup a key.
+ */
+function mockUploadEmitter(
+    expectedVersion: string,
+): TypedEventEmitter<MockKeyUploadEvent, MockKeyUploadEventHandlerMap> {
+    const emitter = new TypedEventEmitter();
+    fetchMock.put(
+        "path:/_matrix/client/v3/room_keys/keys",
+        (url, request) => {
+            const version = new URLSearchParams(new URL(url).search).get("version");
+            if (version != expectedVersion) {
+                return {
+                    status: 403,
+                    body: {
+                        current_version: expectedVersion,
+                        errcode: "M_WRONG_ROOM_KEYS_VERSION",
+                        error: "Wrong backup version.",
+                    },
+                };
+            }
+            const uploadPayload: IKeyBackup = JSON.parse(request.body?.toString() ?? "{}");
+            let count = 0;
+            for (const [roomId, value] of Object.entries(uploadPayload.rooms)) {
+                for (const sessionId of Object.keys(value.sessions)) {
+                    emitter.emit(MockKeyUploadEvent.KeyUploaded, roomId, sessionId, version);
+                    count++;
+                }
+            }
+            return {
+                status: 200,
+                body: {
+                    count: count,
+                    etag: "abcdefg",
+                },
+            };
+        },
+        {
+            overwriteRoutes: true,
+        },
+    );
+    return emitter;
+}
+
+describe.each(Object.entries(CRYPTO_BACKENDS))("megolm-keys backup (%s)", (backend: string, initCrypto: InitCrypto) => {
+    // oldBackendOnly is an alternative to `it` or `test` which will skip the test if we are running against the
+    // Rust backend. Once we have full support in the rust sdk, it will go away.
+    // const oldBackendOnly = backend === "rust-sdk" ? test.skip : test;
+    // const newBackendOnly = backend === "libolm" ? test.skip : test;
+
+    let aliceClient: MatrixClient;
+    /** an object which intercepts `/sync` requests on the test homeserver */
+    let syncResponder: SyncResponder;
+
+    /** an object which intercepts `/keys/upload` requests on the test homeserver */
+    let e2eKeyReceiver: E2EKeyReceiver;
+    /** an object which intercepts `/keys/query` requests on the test homeserver */
+    let e2eKeyResponder: E2EKeyResponder;
+
+    jest.useFakeTimers();
+
+    beforeEach(async () => {
+        // anything that we don't have a specific matcher for silently returns a 404
+        fetchMock.catch(404);
+        fetchMock.config.warnOnFallback = false;
+
+        mockInitialApiRequests(TEST_HOMESERVER_URL);
+        syncResponder = new SyncResponder(TEST_HOMESERVER_URL);
+        e2eKeyReceiver = new E2EKeyReceiver(TEST_HOMESERVER_URL);
+        e2eKeyResponder = new E2EKeyResponder(TEST_HOMESERVER_URL);
+        e2eKeyResponder.addDeviceKeys(testData.SIGNED_TEST_DEVICE_DATA);
+        e2eKeyResponder.addKeyReceiver(TEST_USER_ID, e2eKeyReceiver);
+    });
+
+    afterEach(async () => {
+        if (aliceClient !== undefined) {
+            await aliceClient.stopClient();
+        }
+
+        // Allow in-flight things to complete before we tear down the test
+        await jest.runAllTimersAsync();
+
+        fetchMock.mockReset();
+    });
+
+    async function initTestClient(opts: Partial<ICreateClientOpts> = {}): Promise<MatrixClient> {
+        const client = createClient({
+            baseUrl: TEST_HOMESERVER_URL,
+            userId: TEST_USER_ID,
+            accessToken: "akjgkrgjs",
+            deviceId: TEST_DEVICE_ID,
+            ...opts,
+        });
+        await initCrypto(client);
+
+        return client;
+    }
+
+    it("Alice checks key backups when receiving a message she can't decrypt", async function () {
+        const syncResponse = {
+            next_batch: 1,
+            rooms: {
+                join: {
+                    [ROOM_ID]: {
+                        timeline: {
+                            events: [testData.ENCRYPTED_EVENT],
+                        },
+                    },
+                },
+            },
+        };
+
+        fetchMock.get(
+            "express:/_matrix/client/v3/room_keys/keys/:room_id/:session_id",
+            testData.CURVE25519_KEY_BACKUP_DATA,
+        );
+        fetchMock.get("path:/_matrix/client/v3/room_keys/version", testData.SIGNED_BACKUP_DATA);
+
+        aliceClient = await initTestClient();
+        const aliceCrypto = aliceClient.getCrypto()!;
+        await aliceCrypto.storeSessionBackupPrivateKey(Buffer.from(testData.BACKUP_DECRYPTION_KEY_BASE64, "base64"));
+
+        // start after saving the private key
+        await aliceClient.startClient();
+
+        // tell Alice to trust the dummy device that signed the backup, and re-check the backup.
+        // XXX: should we automatically re-check after a device becomes verified?
+        await waitForDeviceList();
+        await aliceCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+        await aliceClient.getCrypto()!.checkKeyBackupAndEnable();
+
+        // Now, send Alice a message that she won't be able to decrypt, and check that she fetches the key from the backup.
+        syncResponder.sendOrQueueSyncResponse(syncResponse);
+        await syncPromise(aliceClient);
+
+        const room = aliceClient.getRoom(ROOM_ID)!;
+        const event = room.getLiveTimeline().getEvents()[0];
+        await awaitDecryption(event, { waitOnDecryptionFailure: true });
+
+        expect(event.getContent()).toEqual(testData.CLEAR_EVENT.content);
+    });
+
+    describe("recover from backup", () => {
+        it("can restore from backup (Curve25519 version)", async function () {
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", testData.SIGNED_BACKUP_DATA);
+
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+            await aliceClient.startClient();
+
+            // tell Alice to trust the dummy device that signed the backup
+            await waitForDeviceList();
+            await aliceCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+
+            const fullBackup = {
+                rooms: {
+                    [ROOM_ID]: {
+                        sessions: {
+                            [testData.MEGOLM_SESSION_DATA.session_id]: testData.CURVE25519_KEY_BACKUP_DATA,
+                        },
+                    },
+                },
+            };
+
+            fetchMock.get("express:/_matrix/client/v3/room_keys/keys", fullBackup);
+
+            const check = await aliceCrypto.checkKeyBackupAndEnable();
+
+            let onKeyCached: () => void;
+            const awaitKeyCached = new Promise<void>((resolve) => {
+                onKeyCached = resolve;
+            });
+
+            const result = await aliceClient.restoreKeyBackupWithRecoveryKey(
+                testData.BACKUP_DECRYPTION_KEY_BASE58,
+                undefined,
+                undefined,
+                check!.backupInfo!,
+                {
+                    cacheCompleteCallback: () => onKeyCached(),
+                },
+            );
+
+            expect(result.imported).toStrictEqual(1);
+
+            await awaitKeyCached;
+        });
+
+        it("recover specific session from backup", async function () {
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", testData.SIGNED_BACKUP_DATA);
+
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+            await aliceClient.startClient();
+
+            // tell Alice to trust the dummy device that signed the backup
+            await waitForDeviceList();
+            await aliceCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+
+            fetchMock.get(
+                "express:/_matrix/client/v3/room_keys/keys/:room_id/:session_id",
+                testData.CURVE25519_KEY_BACKUP_DATA,
+            );
+
+            const check = await aliceCrypto.checkKeyBackupAndEnable();
+
+            const result = await aliceClient.restoreKeyBackupWithRecoveryKey(
+                testData.BACKUP_DECRYPTION_KEY_BASE58,
+                ROOM_ID,
+                testData.MEGOLM_SESSION_DATA.session_id,
+                check!.backupInfo!,
+            );
+
+            expect(result.imported).toStrictEqual(1);
+        });
+
+        it("Fails on bad recovery key", async function () {
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", testData.SIGNED_BACKUP_DATA);
+
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+            await aliceClient.startClient();
+
+            // tell Alice to trust the dummy device that signed the backup
+            await waitForDeviceList();
+            await aliceCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+
+            const fullBackup = {
+                rooms: {
+                    [ROOM_ID]: {
+                        sessions: {
+                            [testData.MEGOLM_SESSION_DATA.session_id]: testData.CURVE25519_KEY_BACKUP_DATA,
+                        },
+                    },
+                },
+            };
+
+            fetchMock.get("express:/_matrix/client/v3/room_keys/keys", fullBackup);
+
+            const check = await aliceCrypto.checkKeyBackupAndEnable();
+
+            await expect(
+                aliceClient.restoreKeyBackupWithRecoveryKey(
+                    "EsTx A7Xn aNFF k3jH zpV3 MQoN LJEg mscC HecF 982L wC77 mYQD",
+                    undefined,
+                    undefined,
+                    check!.backupInfo!,
+                ),
+            ).rejects.toThrow();
+        });
+    });
+
+    describe("backupLoop", () => {
+        it("Alice should upload known keys when backup is enabled", async function () {
+            // 404 means that there is no active backup
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", 404);
+
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+            await aliceClient.startClient();
+
+            // tell Alice to trust the dummy device that signed the backup
+            await waitForDeviceList();
+            await aliceCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+
+            // check that signalling is working
+            const remainingZeroPromise = new Promise<void>((resolve, reject) => {
+                aliceClient.on(CryptoEvent.KeyBackupSessionsRemaining, (remaining) => {
+                    if (remaining == 0) {
+                        resolve();
+                    }
+                });
+            });
+
+            const someRoomKeys = testData.MEGOLM_SESSION_DATA_ARRAY;
+
+            const uploadMockEmitter = mockUploadEmitter(testData.SIGNED_BACKUP_DATA.version!);
+
+            const uploadPromises = someRoomKeys.map((data) => {
+                new Promise<void>((resolve) => {
+                    uploadMockEmitter.on(MockKeyUploadEvent.KeyUploaded, (roomId, sessionId, version) => {
+                        if (
+                            data.room_id == roomId &&
+                            data.session_id == sessionId &&
+                            version == testData.SIGNED_BACKUP_DATA.version
+                        ) {
+                            resolve();
+                        }
+                    });
+                });
+            });
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", testData.SIGNED_BACKUP_DATA, {
+                overwriteRoutes: true,
+            });
+
+            const result = await aliceCrypto.checkKeyBackupAndEnable();
+            expect(result).toBeTruthy();
+
+            await aliceCrypto.importRoomKeys(someRoomKeys);
+
+            // The backup loop is waiting a random amount of time to avoid different clients firing at the same time.
+            jest.runAllTimers();
+
+            await Promise.all(uploadPromises);
+
+            // Wait until all keys are backed up to ensure that when a new key is received the loop is restarted
+            await remainingZeroPromise;
+
+            // A new key import should trigger a new upload.
+            const newKey = testData.MEGOLM_SESSION_DATA;
+
+            const newKeyUploadPromise = new Promise<void>((resolve) => {
+                uploadMockEmitter.on(MockKeyUploadEvent.KeyUploaded, (roomId, sessionId, version) => {
+                    if (
+                        newKey.room_id == roomId &&
+                        newKey.session_id == sessionId &&
+                        version == testData.SIGNED_BACKUP_DATA.version
+                    ) {
+                        resolve();
+                    }
+                });
+            });
+
+            await aliceCrypto.importRoomKeys([newKey]);
+
+            jest.runAllTimers();
+            await newKeyUploadPromise;
+        });
+
+        it("Alice should re-upload all keys if a new trusted backup is available", async function () {
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+            await aliceClient.startClient();
+
+            // tell Alice to trust the dummy device that signed the backup
+            await waitForDeviceList();
+            await aliceCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+
+            // check that signalling is working
+            const remainingZeroPromise = new Promise<void>((resolve) => {
+                aliceClient.on(CryptoEvent.KeyBackupSessionsRemaining, (remaining) => {
+                    if (remaining == 0) {
+                        resolve();
+                    }
+                });
+            });
+
+            const someRoomKeys = testData.MEGOLM_SESSION_DATA_ARRAY;
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", testData.SIGNED_BACKUP_DATA, {
+                overwriteRoutes: true,
+            });
+
+            const result = await aliceCrypto.checkKeyBackupAndEnable();
+            expect(result).toBeTruthy();
+
+            mockUploadEmitter(testData.SIGNED_BACKUP_DATA.version!);
+            await aliceCrypto.importRoomKeys(someRoomKeys);
+
+            // The backup loop is waiting a random amount of time to avoid different clients firing at the same time.
+            jest.runAllTimers();
+
+            // wait for all keys to be backed up
+            await remainingZeroPromise;
+
+            const newBackupVersion = "2";
+            const uploadMockEmitter = mockUploadEmitter(newBackupVersion);
+            const newBackup = JSON.parse(JSON.stringify(testData.SIGNED_BACKUP_DATA));
+            newBackup.version = newBackupVersion;
+
+            // Let's simulate that a new backup is available by returning error code on key upload
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", newBackup, {
+                overwriteRoutes: true,
+            });
+
+            // If we import a new key the loop will try to upload to old version, it will
+            // fail then check the current version and switch if trusted
+            const uploadPromises = someRoomKeys.map((data) => {
+                new Promise<void>((resolve) => {
+                    uploadMockEmitter.on(MockKeyUploadEvent.KeyUploaded, (roomId, sessionId, version) => {
+                        if (data.room_id == roomId && data.session_id == sessionId && version == newBackupVersion) {
+                            resolve();
+                        }
+                    });
+                });
+            });
+
+            const disableOldBackup = new Promise<void>((resolve) => {
+                aliceClient.on(CryptoEvent.KeyBackupFailed, (errCode) => {
+                    if (errCode == "M_WRONG_ROOM_KEYS_VERSION") {
+                        resolve();
+                    }
+                });
+            });
+
+            const enableNewBackup = new Promise<void>((resolve) => {
+                aliceClient.on(CryptoEvent.KeyBackupStatus, (enabled) => {
+                    if (enabled) {
+                        resolve();
+                    }
+                });
+            });
+
+            // A new key import should trigger a new upload.
+            const newKey = testData.MEGOLM_SESSION_DATA;
+
+            const newKeyUploadPromise = new Promise<void>((resolve) => {
+                uploadMockEmitter.on(MockKeyUploadEvent.KeyUploaded, (roomId, sessionId, version) => {
+                    if (newKey.room_id == roomId && newKey.session_id == sessionId && version == newBackupVersion) {
+                        resolve();
+                    }
+                });
+            });
+
+            await aliceCrypto.importRoomKeys([newKey]);
+
+            jest.runAllTimers();
+
+            await disableOldBackup;
+            await enableNewBackup;
+
+            jest.runAllTimers();
+
+            await Promise.all(uploadPromises);
+            await newKeyUploadPromise;
+        });
+
+        it("Backup loop should be resistant to network failures", async function () {
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+            await aliceClient.startClient();
+
+            // tell Alice to trust the dummy device that signed the backup
+            await waitForDeviceList();
+            await aliceCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", testData.SIGNED_BACKUP_DATA, {
+                overwriteRoutes: true,
+            });
+
+            // on the first key upload attempt, simulate a network failure
+            const failurePromise = new Promise((resolve) => {
+                fetchMock.put(
+                    "path:/_matrix/client/v3/room_keys/keys",
+                    () => {
+                        resolve(undefined);
+                        throw new TypeError(`Failed to fetch`);
+                    },
+                    {
+                        overwriteRoutes: true,
+                    },
+                );
+            });
+
+            // kick the import loop off and wait for the failed request
+            const someRoomKeys = testData.MEGOLM_SESSION_DATA_ARRAY;
+            await aliceCrypto.importRoomKeys(someRoomKeys);
+
+            const result = await aliceCrypto.checkKeyBackupAndEnable();
+            expect(result).toBeTruthy();
+            jest.runAllTimers();
+            await failurePromise;
+
+            // Fix the endpoint to do successful uploads
+            const successPromise = new Promise((resolve) => {
+                fetchMock.put(
+                    "path:/_matrix/client/v3/room_keys/keys",
+                    () => {
+                        resolve(undefined);
+                        return {
+                            status: 200,
+                            body: {
+                                count: 2,
+                                etag: "abcdefg",
+                            },
+                        };
+                    },
+                    {
+                        overwriteRoutes: true,
+                    },
+                );
+            });
+
+            // check that a `KeyBackupSessionsRemaining` event is emitted with `remaining == 0`
+            const allKeysUploadedPromise = new Promise((resolve) => {
+                aliceClient.on(CryptoEvent.KeyBackupSessionsRemaining, (remaining) => {
+                    if (remaining == 0) {
+                        resolve(undefined);
+                    }
+                });
+            });
+
+            // run the timers, which will make the backup loop redo the request
+            await jest.runAllTimersAsync();
+            await successPromise;
+            await allKeysUploadedPromise;
+        });
+    });
+
+    it("getActiveSessionBackupVersion() should give correct result", async function () {
+        // 404 means that there is no active backup
+        fetchMock.get("express:/_matrix/client/v3/room_keys/version", 404);
+
+        aliceClient = await initTestClient();
+        const aliceCrypto = aliceClient.getCrypto()!;
+        await aliceClient.startClient();
+
+        // tell Alice to trust the dummy device that signed the backup
+        await waitForDeviceList();
+        await aliceCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+        await aliceCrypto.checkKeyBackupAndEnable();
+
+        // At this point there is no backup
+        let backupStatus: string | null;
+        backupStatus = await aliceCrypto.getActiveSessionBackupVersion();
+        expect(backupStatus).toBeNull();
+
+        // Serve a backup with no trusted signature
+        const unsignedBackup = JSON.parse(JSON.stringify(testData.SIGNED_BACKUP_DATA));
+        delete unsignedBackup.auth_data.signatures;
+        fetchMock.get("express:/_matrix/client/v3/room_keys/version", unsignedBackup, {
+            overwriteRoutes: true,
+        });
+
+        const checked = await aliceCrypto.checkKeyBackupAndEnable();
+        expect(checked?.backupInfo?.version).toStrictEqual(unsignedBackup.version);
+        expect(checked?.trustInfo?.trusted).toBeFalsy();
+
+        backupStatus = await aliceCrypto.getActiveSessionBackupVersion();
+        expect(backupStatus).toBeNull();
+
+        // Add a valid signature to the backup
+        fetchMock.get("express:/_matrix/client/v3/room_keys/version", testData.SIGNED_BACKUP_DATA, {
+            overwriteRoutes: true,
+        });
+
+        // check that signalling is working
+        const backupPromise = new Promise<void>((resolve, reject) => {
+            aliceClient.on(CryptoEvent.KeyBackupStatus, (enabled) => {
+                if (enabled) {
+                    resolve();
+                }
+            });
+        });
+
+        const validCheck = await aliceCrypto.checkKeyBackupAndEnable();
+        expect(validCheck?.trustInfo?.trusted).toStrictEqual(true);
+
+        await backupPromise;
+
+        backupStatus = await aliceCrypto.getActiveSessionBackupVersion();
+        expect(backupStatus).toStrictEqual(testData.SIGNED_BACKUP_DATA.version);
+    });
+
+    describe("isKeyBackupTrusted", () => {
+        it("does not trust a backup signed by an untrusted device", async () => {
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+
+            // download the device list, to match the trusted case
+            await aliceClient.startClient();
+            await waitForDeviceList();
+
+            const result = await aliceCrypto.isKeyBackupTrusted(testData.SIGNED_BACKUP_DATA);
+            expect(result).toEqual({ trusted: false, matchesDecryptionKey: false });
+        });
+
+        it("trusts a backup signed by a trusted device", async () => {
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+
+            // tell Alice to trust the dummy device that signed the backup
+            await aliceClient.startClient();
+            await waitForDeviceList();
+            await aliceCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+
+            const result = await aliceCrypto.isKeyBackupTrusted(testData.SIGNED_BACKUP_DATA);
+            expect(result).toEqual({ trusted: true, matchesDecryptionKey: false });
+        });
+
+        it("recognises a backup which matches the decryption key", async () => {
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+
+            await aliceClient.startClient();
+            await aliceCrypto.storeSessionBackupPrivateKey(
+                Buffer.from(testData.BACKUP_DECRYPTION_KEY_BASE64, "base64"),
+            );
+
+            const result = await aliceCrypto.isKeyBackupTrusted(testData.SIGNED_BACKUP_DATA);
+            expect(result).toEqual({ trusted: false, matchesDecryptionKey: true });
+        });
+
+        it("is not fooled by a backup which matches the decryption key but uses a different algorithm", async () => {
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+
+            await aliceClient.startClient();
+            await aliceCrypto.storeSessionBackupPrivateKey(
+                Buffer.from(testData.BACKUP_DECRYPTION_KEY_BASE64, "base64"),
+            );
+
+            const backup: KeyBackupInfo = JSON.parse(JSON.stringify(testData.SIGNED_BACKUP_DATA));
+            backup.algorithm = "m.megolm_backup.v1.aes-hmac-sha2";
+            const result = await aliceCrypto.isKeyBackupTrusted(backup);
+            expect(result).toEqual({ trusted: false, matchesDecryptionKey: false });
+        });
+    });
+
+    describe("checkKeyBackupAndEnable", () => {
+        it("enables a backup signed by a trusted device", async () => {
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+
+            // tell Alice to trust the dummy device that signed the backup
+            await aliceClient.startClient();
+            await waitForDeviceList();
+            await aliceCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", testData.SIGNED_BACKUP_DATA);
+
+            const result = await aliceCrypto.checkKeyBackupAndEnable();
+            expect(result).toBeTruthy();
+            expect(result!.trustInfo).toEqual({ trusted: true, matchesDecryptionKey: false });
+            expect(await aliceCrypto.getActiveSessionBackupVersion()).toEqual(testData.SIGNED_BACKUP_DATA.version);
+        });
+
+        it("does not enable a backup signed by an untrusted device", async () => {
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+
+            // download the device list, to match the trusted case
+            await aliceClient.startClient();
+            await waitForDeviceList();
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", testData.SIGNED_BACKUP_DATA);
+
+            const result = await aliceCrypto.checkKeyBackupAndEnable();
+            expect(result).toBeTruthy();
+            expect(result!.trustInfo).toEqual({ trusted: false, matchesDecryptionKey: false });
+            expect(await aliceCrypto.getActiveSessionBackupVersion()).toBeNull();
+        });
+
+        it("disables backup when a new untrusted backup is available", async () => {
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+
+            // tell Alice to trust the dummy device that signed the backup
+            await aliceClient.startClient();
+            await waitForDeviceList();
+            await aliceCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", testData.SIGNED_BACKUP_DATA);
+
+            const result = await aliceCrypto.checkKeyBackupAndEnable();
+            expect(result).toBeTruthy();
+            expect(await aliceCrypto.getActiveSessionBackupVersion()).toEqual(testData.SIGNED_BACKUP_DATA.version);
+
+            const unsignedBackup = JSON.parse(JSON.stringify(testData.SIGNED_BACKUP_DATA));
+            delete unsignedBackup.auth_data.signatures;
+            unsignedBackup.version = "2";
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", unsignedBackup, {
+                overwriteRoutes: true,
+            });
+
+            await aliceCrypto.checkKeyBackupAndEnable();
+            expect(await aliceCrypto.getActiveSessionBackupVersion()).toBeNull();
+        });
+
+        it("switches backup when a new trusted backup is available", async () => {
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+
+            // tell Alice to trust the dummy device that signed the backup
+            await aliceClient.startClient();
+            await waitForDeviceList();
+            await aliceCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", testData.SIGNED_BACKUP_DATA);
+
+            const result = await aliceCrypto.checkKeyBackupAndEnable();
+            expect(result).toBeTruthy();
+            expect(await aliceCrypto.getActiveSessionBackupVersion()).toEqual(testData.SIGNED_BACKUP_DATA.version);
+
+            const newBackupVersion = "2";
+            const newBackup = JSON.parse(JSON.stringify(testData.SIGNED_BACKUP_DATA));
+            newBackup.version = newBackupVersion;
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", newBackup, {
+                overwriteRoutes: true,
+            });
+
+            await aliceCrypto.checkKeyBackupAndEnable();
+            expect(await aliceCrypto.getActiveSessionBackupVersion()).toEqual(newBackupVersion);
+        });
+
+        it("Disables when backup is deleted", async () => {
+            aliceClient = await initTestClient();
+            const aliceCrypto = aliceClient.getCrypto()!;
+
+            // tell Alice to trust the dummy device that signed the backup
+            await aliceClient.startClient();
+            await waitForDeviceList();
+            await aliceCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+
+            fetchMock.get("path:/_matrix/client/v3/room_keys/version", testData.SIGNED_BACKUP_DATA);
+
+            const result = await aliceCrypto.checkKeyBackupAndEnable();
+            expect(result).toBeTruthy();
+            expect(await aliceCrypto.getActiveSessionBackupVersion()).toEqual(testData.SIGNED_BACKUP_DATA.version);
+
+            fetchMock.get(
+                "path:/_matrix/client/v3/room_keys/version",
+                {
+                    status: 404,
+                    body: {
+                        errcode: "M_NOT_FOUND",
+                        error: "No backup found",
+                    },
+                },
+                {
+                    overwriteRoutes: true,
+                },
+            );
+            const noResult = await aliceCrypto.checkKeyBackupAndEnable();
+            expect(noResult).toBeNull();
+            expect(await aliceCrypto.getActiveSessionBackupVersion()).toBeNull();
+        });
+    });
+
+    /** make sure that the client knows about the dummy device */
+    async function waitForDeviceList(): Promise<void> {
+        // Completing the initial sync will make the device list download outdated device lists (of which our own
+        // user will be one).
+        syncResponder.sendOrQueueSyncResponse({});
+        // DeviceList has a sleep(5) which we need to make happen
+        await jest.advanceTimersByTimeAsync(10);
+
+        // The client should now know about the dummy device
+        const devices = await aliceClient.getCrypto()!.getUserDeviceInfo([TEST_USER_ID]);
+        expect(devices.get(TEST_USER_ID)!.keys()).toContain(TEST_DEVICE_ID);
+    }
+});
@@ -26,16 +26,16 @@ limitations under the License.
 */

 // load olm before the sdk if possible
-import "../olm-loader";
+import "../../olm-loader";

 import type { Session } from "@matrix-org/olm";
-import type { IDeviceKeys, IOneTimeKey } from "../../src/@types/crypto";
-import { logger } from "../../src/logger";
-import * as testUtils from "../test-utils/test-utils";
-import { TestClient } from "../TestClient";
-import { CRYPTO_ENABLED, IClaimKeysRequest, IQueryKeysRequest, IUploadKeysRequest } from "../../src/client";
-import { ClientEvent, IContent, ISendEventResponse, MatrixClient, MatrixEvent } from "../../src/matrix";
-import { DeviceInfo } from "../../src/crypto/deviceinfo";
+import type { IDeviceKeys, IOneTimeKey } from "../../../src/@types/crypto";
+import { logger } from "../../../src/logger";
+import * as testUtils from "../../test-utils/test-utils";
+import { TestClient } from "../../TestClient";
+import { CRYPTO_ENABLED, IClaimKeysRequest, IQueryKeysRequest, IUploadKeysRequest } from "../../../src/client";
+import { ClientEvent, IContent, ISendEventResponse, MatrixClient, MatrixEvent } from "../../../src/matrix";
+import { DeviceInfo } from "../../../src/crypto/deviceinfo";

 let aliTestClient: TestClient;
 const roomId = "!room:localhost";
@@ -17,7 +17,7 @@ limitations under the License.
 import "fake-indexeddb/auto";
 import { IDBFactory } from "fake-indexeddb";

-import { createClient } from "../../src";
+import { createClient } from "../../../src";

 afterEach(() => {
    // reset fake-indexeddb after each test, to make sure we don't leak connections
@@ -87,4 +87,19 @@ describe("MatrixClient.clearStores", () => {
        await matrixClient.clearStores();
        expect(await indexedDB.databases()).toHaveLength(0);
    });
+
+    it("should not fail in environments without indexedDB", async () => {
+        // eslint-disable-next-line no-global-assign
+        indexedDB = undefined!;
+        const matrixClient = createClient({
+            baseUrl: "http://test.server",
+            userId: "@alice:localhost",
+            deviceId: "aliceDevice",
+        });
+
+        await matrixClient.stopClient();
+
+        await matrixClient.clearStores();
+        // No error thrown in clearStores
+    });
 });
@@ -92,9 +92,7 @@ describe("MatrixClient events", function () {
                                    type: "m.room.create",
                                    room: "!erufh:bar",
                                    user: "@foo:bar",
-                                    content: {
-                                        creator: "@foo:bar",
-                                    },
+                                    content: {},
                                }),
                            ],
                        },
@@ -107,9 +107,7 @@ const INITIAL_SYNC_DATA = {
                        utils.mkEvent({
                            type: "m.room.create",
                            user: userId,
-                            content: {
-                                creator: userId,
-                            },
+                            content: {},
                            event: false,
                        }),
                    ],
@@ -207,7 +205,7 @@ function startClient(httpBackend: HttpBackend, client: MatrixClient) {
    httpBackend.when("POST", "/filter").respond(200, { filter_id: "fid" });
    httpBackend.when("GET", "/sync").respond(200, INITIAL_SYNC_DATA);

-    client.startClient();
+    client.startClient({ threadSupport: true });

    // set up a promise which will resolve once the client is initialised
    const prom = new Promise<void>((resolve) => {
@@ -248,7 +246,7 @@ describe("getEventTimeline support", function () {
        return startClient(httpBackend, client).then(function () {
            const room = client.getRoom(roomId)!;
            const timelineSet = room!.getTimelineSets()[0];
-            expect(client.getEventTimeline(timelineSet, "event")).rejects.toBeTruthy();
+            return expect(client.getEventTimeline(timelineSet, "event")).rejects.toBeTruthy();
        });
    });

@@ -260,7 +258,18 @@ describe("getEventTimeline support", function () {
        return startClient(httpBackend, client).then(() => {
            const room = client.getRoom(roomId)!;
            const timelineSet = room!.getTimelineSets()[0];
-            expect(client.getEventTimeline(timelineSet, "event")).rejects.toBeFalsy();
+            httpBackend.when("GET", `/rooms/${encodeURIComponent(roomId)}/context/event`).respond(200, () => ({
+                event: {
+                    event_id: "event",
+                },
+                events_after: [],
+                events_before: [],
+                state: [],
+            }));
+            return Promise.all([
+                expect(client.getEventTimeline(timelineSet, "event")).resolves.toBeTruthy(),
+                httpBackend.flushAllExpected(),
+            ]);
        });
    });

@@ -271,7 +280,7 @@ describe("getEventTimeline support", function () {

        return startClient(httpBackend, client).then(function () {
            const timelineSet = new EventTimelineSet(undefined);
-            expect(client.getEventTimeline(timelineSet, "event")).rejects.toBeTruthy();
+            return expect(client.getEventTimeline(timelineSet, "event")).rejects.toBeTruthy();
        });
    });

@@ -598,12 +607,6 @@ describe("MatrixClient event timelines", function () {
            await client.stopClient(); // we don't need the client to be syncing at this time
            const room = client.getRoom(roomId)!;

-            httpBackend
-                .when("GET", "/rooms/!foo%3Abar/event/" + encodeURIComponent(THREAD_ROOT.event_id!))
-                .respond(200, function () {
-                    return THREAD_ROOT;
-                });
-
            httpBackend
                .when("GET", "/rooms/!foo%3Abar/event/" + encodeURIComponent(THREAD_ROOT.event_id!))
                .respond(200, function () {
@@ -634,12 +637,6 @@ describe("MatrixClient event timelines", function () {
            const thread = room.createThread(THREAD_ROOT.event_id!, undefined, [], false);
            await httpBackend.flushAllExpected();
            const timelineSet = thread.timelineSet;
-            httpBackend
-                .when("GET", "/rooms/!foo%3Abar/event/" + encodeURIComponent(THREAD_ROOT.event_id!))
-                .respond(200, function () {
-                    return THREAD_ROOT;
-                });
-            await flushHttp(emitPromise(thread, ThreadEvent.Update));

            const timeline = await client.getEventTimeline(timelineSet, THREAD_REPLY.event_id!);

@@ -790,7 +787,18 @@ describe("MatrixClient event timelines", function () {
            return startClient(httpBackend, client).then(() => {
                const room = client.getRoom(roomId)!;
                const timelineSet = room.getTimelineSets()[0];
-                expect(client.getLatestTimeline(timelineSet)).rejects.toBeFalsy();
+                httpBackend.when("GET", `/rooms/${encodeURIComponent(roomId)}/context/event`).respond(200, () => ({
+                    event: {
+                        event_id: "event",
+                    },
+                    events_after: [],
+                    events_before: [],
+                    state: [],
+                }));
+                return Promise.all([
+                    expect(client.getEventTimeline(timelineSet, "event")).resolves.toBeTruthy(),
+                    httpBackend.flushAllExpected(),
+                ]);
            });
        });

@@ -1142,7 +1150,7 @@ describe("MatrixClient event timelines", function () {

        const prom = emitPromise(room, ThreadEvent.Update);
        // Assume we're seeing the reply while loading backlog
-        room.addLiveEvents([THREAD_REPLY2]);
+        await room.addLiveEvents([THREAD_REPLY2]);
        httpBackend
            .when(
                "GET",
@@ -1156,7 +1164,7 @@ describe("MatrixClient event timelines", function () {
            });
        await flushHttp(prom);
        // but while loading the metadata, a new reply has arrived
-        room.addLiveEvents([THREAD_REPLY3]);
+        await room.addLiveEvents([THREAD_REPLY3]);
        const thread = room.getThread(THREAD_ROOT_UPDATED.event_id!)!;
        // then the events should still be all in the right order
        expect(thread.events.map((it) => it.getId())).toEqual([
@@ -1248,7 +1256,7 @@ describe("MatrixClient event timelines", function () {

        const prom = emitPromise(room, ThreadEvent.Update);
        // Assume we're seeing the reply while loading backlog
-        room.addLiveEvents([THREAD_REPLY2]);
+        await room.addLiveEvents([THREAD_REPLY2]);
        httpBackend
            .when(
                "GET",
@@ -1267,7 +1275,7 @@ describe("MatrixClient event timelines", function () {
            });
        await flushHttp(prom);
        // but while loading the metadata, a new reply has arrived
-        room.addLiveEvents([THREAD_REPLY3]);
+        await room.addLiveEvents([THREAD_REPLY3]);
        const thread = room.getThread(THREAD_ROOT_UPDATED.event_id!)!;
        // then the events should still be all in the right order
        expect(thread.events.map((it) => it.getId())).toEqual([
@@ -1322,7 +1330,7 @@ describe("MatrixClient event timelines", function () {
            request.respond(200, function () {
                return {
                    original_event: root,
-                    chunk: [replies],
+                    chunk: replies,
                    // no next batch as this is the oldest end of the timeline
                };
            });
@@ -1332,7 +1340,7 @@ describe("MatrixClient event timelines", function () {
        function respondToContext(event: Partial<IEvent> = THREAD_ROOT): ExpectedHttpRequest {
            const request = httpBackend.when(
                "GET",
-                encodeUri("/_matrix/client/r0/rooms/$roomId/context/$eventId", {
+                encodeUri("/_matrix/client/v3/rooms/$roomId/context/$eventId", {
                    $roomId: roomId,
                    $eventId: event.event_id!,
                }),
@@ -1350,7 +1358,7 @@ describe("MatrixClient event timelines", function () {
        function respondToEvent(event: Partial<IEvent> = THREAD_ROOT): ExpectedHttpRequest {
            const request = httpBackend.when(
                "GET",
-                encodeUri("/_matrix/client/r0/rooms/$roomId/event/$eventId", {
+                encodeUri("/_matrix/client/v3/rooms/$roomId/event/$eventId", {
                    $roomId: roomId,
                    $eventId: event.event_id!,
                }),
@@ -1361,7 +1369,7 @@ describe("MatrixClient event timelines", function () {
        function respondToMessagesRequest(): ExpectedHttpRequest {
            const request = httpBackend.when(
                "GET",
-                encodeUri("/_matrix/client/r0/rooms/$roomId/messages", {
+                encodeUri("/_matrix/client/v3/rooms/$roomId/messages", {
                    $roomId: roomId,
                }),
            );
@@ -1452,7 +1460,7 @@ describe("MatrixClient event timelines", function () {
                expect(room.getPendingEvents()).toHaveLength(1);
            });

-            it("should handle thread updates by reordering the thread list", async () => {
+            it("should handle new thread replies by reordering the thread list", async () => {
                // Test data for a second thread
                const THREAD2_ROOT = utils.mkEvent({
                    room: roomId,
@@ -1479,7 +1487,7 @@ describe("MatrixClient event timelines", function () {
                    user: userId,
                    type: "m.room.message",
                    content: {
-                        "body": "thread reply",
+                        "body": "thread2 reply",
                        "msgtype": "m.text",
                        "m.relates_to": {
                            // We can't use the const here because we change server support mode for test
@@ -1499,7 +1507,7 @@ describe("MatrixClient event timelines", function () {
                    user: userId,
                    type: "m.room.message",
                    content: {
-                        "body": "thread reply",
+                        "body": "thread reply2",
                        "msgtype": "m.text",
                        "m.relates_to": {
                            // We can't use the const here because we change server support mode for test
@@ -1509,7 +1517,8 @@ describe("MatrixClient event timelines", function () {
                    },
                    event: true,
                });
-                THREAD_REPLY2.localTimestamp += 1000;
+                // this has to come after THREAD_REPLY which hasn't been instantiated by us
+                THREAD_REPLY2.localTimestamp += 10000000;

                // Test data for the first thread, with the second reply
                const THREAD_ROOT_UPDATED = {
@@ -1569,10 +1578,8 @@ describe("MatrixClient event timelines", function () {
                thread.initialEventsFetched = true;
                const prom = emitPromise(room, ThreadEvent.NewReply);
                respondToEvent(THREAD_ROOT_UPDATED);
-                respondToEvent(THREAD_ROOT_UPDATED);
-                respondToEvent(THREAD_ROOT_UPDATED);
                respondToEvent(THREAD2_ROOT);
-                room.addLiveEvents([THREAD_REPLY2]);
+                await room.addLiveEvents([THREAD_REPLY2]);
                await httpBackend.flushAllExpected();
                await prom;
                expect(thread.length).toBe(2);
@@ -1582,6 +1589,132 @@ describe("MatrixClient event timelines", function () {
                    THREAD_ROOT.event_id,
                ]);
            });
+
+            it("should not reorder the thread list on other thread updates", async () => {
+                // Test data for a second thread
+                const THREAD2_ROOT = utils.mkEvent({
+                    room: roomId,
+                    user: userId,
+                    type: "m.room.message",
+                    content: {
+                        body: "thread root",
+                        msgtype: "m.text",
+                    },
+                    unsigned: {
+                        "m.relations": {
+                            "io.element.thread": {
+                                //"latest_event": undefined,
+                                count: 1,
+                                current_user_participated: true,
+                            },
+                        },
+                    },
+                    event: false,
+                });
+
+                const THREAD2_REPLY = utils.mkEvent({
+                    room: roomId,
+                    user: userId,
+                    type: "m.room.message",
+                    content: {
+                        "body": "thread2 reply",
+                        "msgtype": "m.text",
+                        "m.relates_to": {
+                            // We can't use the const here because we change server support mode for test
+                            rel_type: "io.element.thread",
+                            event_id: THREAD_ROOT.event_id,
+                        },
+                    },
+                    event: false,
+                });
+
+                // @ts-ignore we know this is a defined path for THREAD ROOT
+                THREAD2_ROOT.unsigned["m.relations"]["io.element.thread"].latest_event = THREAD2_REPLY;
+
+                const THREAD_REPLY_REACTION = utils.mkEvent({
+                    room: roomId,
+                    user: userId,
+                    type: "m.reaction",
+                    content: {
+                        "m.relates_to": {
+                            rel_type: RelationType.Annotation,
+                            event_id: THREAD_REPLY.event_id,
+                            key: "🪿",
+                        },
+                    },
+                    event: true,
+                });
+                THREAD_REPLY_REACTION.localTimestamp += 1000;
+
+                // Modified thread root event containing latest thread reply in its unsigned
+                const THREAD_ROOT_UPDATED = {
+                    ...THREAD_ROOT,
+                    unsigned: {
+                        ...THREAD_ROOT.unsigned,
+                        "m.relations": {
+                            ...THREAD_ROOT.unsigned!["m.relations"],
+                            "io.element.thread": {
+                                ...THREAD_ROOT.unsigned!["m.relations"]!["io.element.thread"],
+                                count: 2,
+                                latest_event: THREAD_REPLY,
+                            },
+                        },
+                    },
+                };
+
+                // Response with test data for the thread list request
+                const threadsResponse = {
+                    chunk: [THREAD2_ROOT, THREAD_ROOT],
+                    state: [],
+                    next_batch: RANDOM_TOKEN as string | null,
+                };
+
+                // @ts-ignore
+                client.clientOpts.threadSupport = true;
+                Thread.setServerSideSupport(FeatureSupport.Stable);
+                Thread.setServerSideListSupport(FeatureSupport.Stable);
+                Thread.setServerSideFwdPaginationSupport(FeatureSupport.Stable);
+
+                await client.stopClient(); // we don't need the client to be syncing at this time
+                const room = client.getRoom(roomId)!;
+
+                // Set up room threads
+                const timelineSets = await room!.createThreadsTimelineSets();
+                expect(timelineSets).not.toBeNull();
+                respondToThreads(threadsResponse);
+                respondToThreads(threadsResponse);
+                respondToEvent(THREAD_ROOT);
+                respondToEvent(THREAD2_ROOT);
+                respondToThread(THREAD_ROOT, [THREAD_REPLY]);
+                respondToThread(THREAD2_ROOT, [THREAD2_REPLY]);
+                await flushHttp(room.fetchRoomThreads());
+                const threadIds = room.getThreads().map((thread) => thread.id);
+                expect(threadIds).toContain(THREAD_ROOT.event_id);
+                expect(threadIds).toContain(THREAD2_ROOT.event_id);
+                const [allThreads] = timelineSets!;
+                const timeline = allThreads.getLiveTimeline()!;
+                // Test threads are in chronological order
+                expect(timeline.getEvents().map((it) => it.event.event_id)).toEqual([
+                    THREAD_ROOT.event_id,
+                    THREAD2_ROOT.event_id,
+                ]);
+
+                // Test adding a second event to the first thread
+                const thread = room.getThread(THREAD_ROOT.event_id!)!;
+                thread.initialEventsFetched = true;
+                const prom = emitPromise(room, ThreadEvent.Update);
+                respondToEvent(THREAD_ROOT_UPDATED);
+                respondToEvent(THREAD2_ROOT);
+                await room.addLiveEvents([THREAD_REPLY_REACTION]);
+                await httpBackend.flushAllExpected();
+                await prom;
+                expect(thread.length).toBe(1); // reactions don't count towards the length of a thread
+                // Test thread order is unchanged
+                expect(timeline!.getEvents().map((it) => it.event.event_id)).toEqual([
+                    THREAD_ROOT.event_id,
+                    THREAD2_ROOT.event_id,
+                ]);
+            });
        });

        describe("without server compatibility", function () {
@@ -1917,76 +2050,7 @@ describe("MatrixClient event timelines", function () {
            expect(thread.initialEventsFetched).toBeTruthy();
            const timelineSet = thread.timelineSet;

-            httpBackend
-                .when("GET", "/rooms/!foo%3Abar/event/" + encodeURIComponent(THREAD_ROOT.event_id!))
-                .respond(200, function () {
-                    return THREAD_ROOT;
-                });
-            httpBackend
-                .when("GET", "/rooms/!foo%3Abar/event/" + encodeURIComponent(THREAD_ROOT.event_id!))
-                .respond(200, function () {
-                    return THREAD_ROOT;
-                });
-            httpBackend
-                .when("GET", "/rooms/!foo%3Abar/event/" + encodeURIComponent(THREAD_ROOT.event_id!))
-                .respond(200, function () {
-                    return THREAD_ROOT;
-                });
-            httpBackend
-                .when("GET", "/rooms/!foo%3Abar/event/" + encodeURIComponent(THREAD_ROOT.event_id!))
-                .respond(200, function () {
-                    return THREAD_ROOT;
-                });
-            httpBackend
-                .when("GET", "/rooms/!foo%3Abar/event/" + encodeURIComponent(THREAD_ROOT.event_id!))
-                .respond(200, function () {
-                    return THREAD_ROOT;
-                });
-            httpBackend
-                .when("GET", "/rooms/!foo%3Abar/context/" + encodeURIComponent(THREAD_ROOT.event_id!))
-                .respond(200, function () {
-                    return {
-                        start: "start_token",
-                        events_before: [],
-                        event: THREAD_ROOT,
-                        events_after: [],
-                        end: "end_token",
-                        state: [],
-                    };
-                });
-            httpBackend
-                .when(
-                    "GET",
-                    "/_matrix/client/v1/rooms/!foo%3Abar/relations/" +
-                        encodeURIComponent(THREAD_ROOT.event_id!) +
-                        "/" +
-                        encodeURIComponent(THREAD_RELATION_TYPE.name) +
-                        buildRelationPaginationQuery({
-                            dir: Direction.Backward,
-                            from: "start_token",
-                        }),
-                )
-                .respond(200, function () {
-                    return {
-                        chunk: [],
-                    };
-                });
-            httpBackend
-                .when(
-                    "GET",
-                    "/_matrix/client/v1/rooms/!foo%3Abar/relations/" +
-                        encodeURIComponent(THREAD_ROOT.event_id!) +
-                        "/" +
-                        encodeURIComponent(THREAD_RELATION_TYPE.name) +
-                        buildRelationPaginationQuery({ dir: Direction.Forward, from: "end_token" }),
-                )
-                .respond(200, function () {
-                    return {
-                        chunk: [THREAD_REPLY],
-                    };
-                });
-
-            const timeline = await flushHttp(client.getEventTimeline(timelineSet, THREAD_ROOT.event_id!));
+            const timeline = await client.getEventTimeline(timelineSet, THREAD_ROOT.event_id!);

            httpBackend.when("GET", "/sync").respond(200, {
                next_batch: "s_5_5",
@@ -57,9 +57,7 @@ describe("MatrixClient opts", function () {
                                type: "m.room.create",
                                room: roomId,
                                user: userId,
-                                content: {
-                                    creator: userId,
-                                },
+                                content: {},
                            }),
                        ],
                    },
@@ -85,9 +85,7 @@ describe("MatrixClient room timelines", function () {
                                type: "m.room.create",
                                room: roomId,
                                user: userId,
-                                content: {
-                                    creator: userId,
-                                },
+                                content: {},
                            }),
                        ],
                    },
@@ -36,11 +36,16 @@ import {
    NotificationCountType,
    IEphemeral,
    Room,
+    IndexedDBStore,
+    RelationType,
+    EventType,
 } from "../../src";
 import { ReceiptType } from "../../src/@types/read_receipts";
 import { UNREAD_THREAD_NOTIFICATIONS } from "../../src/@types/sync";
 import * as utils from "../test-utils/test-utils";
 import { TestClient } from "../TestClient";
+import { emitPromise, mkEvent, mkMessage } from "../test-utils/test-utils";
+import { THREAD_RELATION_TYPE } from "../../src/models/thread";

 describe("MatrixClient syncing", () => {
    const selfUserId = "@alice:localhost";
@@ -218,9 +223,122 @@ describe("MatrixClient syncing", () => {
            expect(fires).toBe(3);
        });

-        it("should honour lazyLoadMembers if user is not a guest", () => {
-            client!.doesServerSupportLazyLoading = jest.fn().mockResolvedValue(true);
+        it("should emit RoomEvent.MyMembership for knock->leave->knock cycles", async () => {
+            await client!.initCrypto();

+            const roomId = "!cycles:example.org";
+
+            // First sync: an knock
+            const knockSyncRoomSection = {
+                knock: {
+                    [roomId]: {
+                        knock_state: {
+                            events: [
+                                {
+                                    type: "m.room.member",
+                                    state_key: selfUserId,
+                                    content: {
+                                        membership: "knock",
+                                    },
+                                },
+                            ],
+                        },
+                    },
+                },
+            };
+            httpBackend!.when("GET", "/sync").respond(200, {
+                ...syncData,
+                rooms: knockSyncRoomSection,
+            });
+
+            // Second sync: a leave (reject of some kind)
+            httpBackend!.when("POST", "/leave").respond(200, {});
+            httpBackend!.when("GET", "/sync").respond(200, {
+                ...syncData,
+                rooms: {
+                    leave: {
+                        [roomId]: {
+                            account_data: { events: [] },
+                            ephemeral: { events: [] },
+                            state: {
+                                events: [
+                                    {
+                                        type: "m.room.member",
+                                        state_key: selfUserId,
+                                        content: {
+                                            membership: "leave",
+                                        },
+                                        prev_content: {
+                                            membership: "knock",
+                                        },
+                                        // XXX: And other fields required on an event
+                                    },
+                                ],
+                            },
+                            timeline: {
+                                limited: false,
+                                events: [
+                                    {
+                                        type: "m.room.member",
+                                        state_key: selfUserId,
+                                        content: {
+                                            membership: "leave",
+                                        },
+                                        prev_content: {
+                                            membership: "knock",
+                                        },
+                                        // XXX: And other fields required on an event
+                                    },
+                                ],
+                            },
+                        },
+                    },
+                },
+            });
+
+            // Third sync: another knock
+            httpBackend!.when("GET", "/sync").respond(200, {
+                ...syncData,
+                rooms: knockSyncRoomSection,
+            });
+
+            // First fire: an initial knock
+            let fires = 0;
+            client!.once(RoomEvent.MyMembership, (room, membership, oldMembership) => {
+                // Room, string, string
+                fires++;
+                expect(room.roomId).toBe(roomId);
+                expect(membership).toBe("knock");
+                expect(oldMembership).toBeFalsy();
+
+                // Second fire: a leave
+                client!.once(RoomEvent.MyMembership, (room, membership, oldMembership) => {
+                    fires++;
+                    expect(room.roomId).toBe(roomId);
+                    expect(membership).toBe("leave");
+                    expect(oldMembership).toBe("knock");
+
+                    // Third/final fire: a second knock
+                    client!.once(RoomEvent.MyMembership, (room, membership, oldMembership) => {
+                        fires++;
+                        expect(room.roomId).toBe(roomId);
+                        expect(membership).toBe("knock");
+                        expect(oldMembership).toBe("leave");
+                    });
+                });
+
+                // For maximum safety, "leave" the room after we register the handler
+                client!.leave(roomId);
+            });
+
+            // noinspection ES6MissingAwait
+            client!.startClient();
+            await httpBackend!.flushAllExpected();
+
+            expect(fires).toBe(3);
+        });
+
+        it("should honour lazyLoadMembers if user is not a guest", () => {
            httpBackend!
                .when("GET", "/sync")
                .check((req) => {
@@ -237,8 +355,6 @@ describe("MatrixClient syncing", () => {
        it("should not honour lazyLoadMembers if user is a guest", () => {
            httpBackend!.expectedRequests = [];
            httpBackend!.when("GET", "/versions").respond(200, {});
-            client!.doesServerSupportLazyLoading = jest.fn().mockResolvedValue(true);
-
            httpBackend!
                .when("GET", "/sync")
                .check((req) => {
@@ -292,6 +408,46 @@ describe("MatrixClient syncing", () => {
            expect(fires).toBe(1);
        });

+        it("should emit ClientEvent.Room when knocked while crypto is disabled", async () => {
+            const roomId = "!knock:example.org";
+
+            // First sync: a knock
+            const knockSyncRoomSection = {
+                knock: {
+                    [roomId]: {
+                        knock_state: {
+                            events: [
+                                {
+                                    type: "m.room.member",
+                                    state_key: selfUserId,
+                                    content: {
+                                        membership: "knock",
+                                    },
+                                },
+                            ],
+                        },
+                    },
+                },
+            };
+            httpBackend!.when("GET", "/sync").respond(200, {
+                ...syncData,
+                rooms: knockSyncRoomSection,
+            });
+
+            // First fire: an initial knock
+            let fires = 0;
+            client!.once(ClientEvent.Room, (room) => {
+                fires++;
+                expect(room.roomId).toBe(roomId);
+            });
+
+            // noinspection ES6MissingAwait
+            client!.startClient();
+            await httpBackend!.flushAllExpected();
+
+            expect(fires).toBe(1);
+        });
+
        it("should work when all network calls fail", async () => {
            httpBackend!.expectedRequests = [];
            httpBackend!.when("GET", "").fail(0, new Error("CORS or something"));
@@ -357,6 +513,7 @@ describe("MatrixClient syncing", () => {
                join: {},
                invite: {},
                leave: {},
+                knock: {},
            },
        };

@@ -388,9 +545,7 @@ describe("MatrixClient syncing", () => {
                            type: "m.room.create",
                            room: roomOne,
                            user: selfUserId,
-                            content: {
-                                creator: selfUserId,
-                            },
+                            content: {},
                        }),
                    ],
                },
@@ -576,9 +731,7 @@ describe("MatrixClient syncing", () => {
                                    type: "m.room.create",
                                    room: roomOne,
                                    user: selfUserId,
-                                    content: {
-                                        creator: selfUserId,
-                                    },
+                                    content: {},
                                }),
                            ],
                        },
@@ -610,9 +763,7 @@ describe("MatrixClient syncing", () => {
                                    type: "m.room.create",
                                    room: roomTwo,
                                    user: selfUserId,
-                                    content: {
-                                        creator: selfUserId,
-                                    },
+                                    content: {},
                                }),
                            ],
                        },
@@ -757,7 +908,6 @@ describe("MatrixClient syncing", () => {
                        room: roomOne,
                        user: otherUserId,
                        content: {
-                            creator: otherUserId,
                            room_version: "9",
                        },
                    });
@@ -843,7 +993,6 @@ describe("MatrixClient syncing", () => {
                        room: roomOne,
                        user: otherUserId,
                        content: {
-                            creator: otherUserId,
                            room_version: testMeta.roomVersion,
                        },
                    });
@@ -1371,9 +1520,7 @@ describe("MatrixClient syncing", () => {
                                    type: "m.room.create",
                                    room: roomOne,
                                    user: selfUserId,
-                                    content: {
-                                        creator: selfUserId,
-                                    },
+                                    content: {},
                                }),
                            ],
                        } as Partial<IJoinedRoom>,
@@ -1470,9 +1617,7 @@ describe("MatrixClient syncing", () => {
                                    type: "m.room.create",
                                    room: roomOne,
                                    user: selfUserId,
-                                    content: {
-                                        creator: selfUserId,
-                                    },
+                                    content: {},
                                }),
                            ],
                        },
@@ -1586,6 +1731,66 @@ describe("MatrixClient syncing", () => {
                });
            });
        });
+
+        it("should apply encrypted notification logic for events within the same sync blob", async () => {
+            const roomId = "!room123:server";
+            const syncData = {
+                rooms: {
+                    join: {
+                        [roomId]: {
+                            ephemeral: {
+                                events: [],
+                            },
+                            timeline: {
+                                events: [
+                                    utils.mkEvent({
+                                        room: roomId,
+                                        event: true,
+                                        skey: "",
+                                        type: EventType.RoomEncryption,
+                                        content: {},
+                                    }),
+                                    utils.mkMessage({
+                                        room: roomId,
+                                        user: otherUserId,
+                                        msg: "hello",
+                                    }),
+                                ],
+                            },
+                            state: {
+                                events: [
+                                    utils.mkMembership({
+                                        room: roomId,
+                                        mship: "join",
+                                        user: otherUserId,
+                                    }),
+                                    utils.mkMembership({
+                                        room: roomId,
+                                        mship: "join",
+                                        user: selfUserId,
+                                    }),
+                                    utils.mkEvent({
+                                        type: "m.room.create",
+                                        room: roomId,
+                                        user: selfUserId,
+                                        content: {},
+                                    }),
+                                ],
+                            },
+                        },
+                    },
+                },
+            } as unknown as ISyncResponse;
+
+            httpBackend!.when("GET", "/sync").respond(200, syncData);
+            client!.startClient();
+
+            await Promise.all([httpBackend!.flushAllExpected(), awaitSyncEvent()]);
+
+            const room = client!.getRoom(roomId)!;
+            expect(room).toBeInstanceOf(Room);
+            expect(room.getRoomUnreadNotificationCount(NotificationCountType.Total)).toBe(0);
+        });
    });

    describe("of a room", () => {
@@ -1867,4 +2072,124 @@ describe("MatrixClient syncing (IndexedDB version)", () => {
        idbClient.stopClient();
        idbHttpBackend.stop();
    });
+
+    it("should query server for which thread a 2nd order relation belongs to and stash in sync accumulator", async () => {
+        const roomId = "!room:example.org";
+
+        async function startClient(client: MatrixClient): Promise<void> {
+            await Promise.all([
+                idbClient.startClient({
+                    // Without this all events just go into the main timeline
+                    threadSupport: true,
+                }),
+                idbHttpBackend.flushAllExpected(),
+                emitPromise(idbClient, ClientEvent.Room),
+            ]);
+        }
+
+        function assertEventsExpected(client: MatrixClient): void {
+            const room = client.getRoom(roomId);
+            const mainTimelineEvents = room!.getLiveTimeline().getEvents();
+            expect(mainTimelineEvents).toHaveLength(1);
+            expect(mainTimelineEvents[0].getContent().body).toEqual("Test");
+
+            const thread = room!.getThread("$someThreadId")!;
+            expect(thread.replayEvents).toHaveLength(1);
+            expect(thread.replayEvents![0].getRelation()!.key).toEqual("🪿");
+        }
+
+        let idbTestClient = new TestClient(selfUserId, "DEVICE", selfAccessToken, undefined, {
+            store: new IndexedDBStore({
+                indexedDB: global.indexedDB,
+                dbName: "test",
+            }),
+        });
+        let idbHttpBackend = idbTestClient.httpBackend;
+        let idbClient = idbTestClient.client;
+        await idbClient.store.startup();
+
+        idbHttpBackend.when("GET", "/versions").respond(200, { versions: ["v1.4"] });
+        idbHttpBackend.when("GET", "/pushrules/").respond(200, {});
+        idbHttpBackend.when("POST", "/filter").respond(200, { filter_id: "a filter id" });
+
+        const syncRoomSection = {
+            join: {
+                [roomId]: {
+                    timeline: {
+                        prev_batch: "foo",
+                        events: [
+                            mkMessage({
+                                room: roomId,
+                                user: selfUserId,
+                                msg: "Test",
+                            }),
+                            mkEvent({
+                                room: roomId,
+                                user: selfUserId,
+                                content: {
+                                    "m.relates_to": {
+                                        rel_type: RelationType.Annotation,
+                                        event_id: "$someUnknownEvent",
+                                        key: "🪿",
+                                    },
+                                },
+                                type: "m.reaction",
+                            }),
+                        ],
+                    },
+                },
+            },
+        };
+        idbHttpBackend.when("GET", "/sync").respond(200, {
+            ...syncData,
+            rooms: syncRoomSection,
+        });
+        idbHttpBackend.when("GET", `/rooms/${encodeURIComponent(roomId)}/event/%24someUnknownEvent`).respond(
+            200,
+            mkEvent({
+                room: roomId,
+                user: selfUserId,
+                content: {
+                    "body": "Thread response",
+                    "m.relates_to": {
+                        rel_type: THREAD_RELATION_TYPE.name,
+                        event_id: "$someThreadId",
+                    },
+                },
+                type: "m.room.message",
+            }),
+        );
+
+        await startClient(idbClient);
+        assertEventsExpected(idbClient);
+
+        idbHttpBackend.verifyNoOutstandingExpectation();
+        // Force sync accumulator to persist, reset client, assert it doesn't re-fetch event on next start-up
+        await idbClient.store.save(true);
+        await idbClient.stopClient();
+        await idbClient.store.destroy();
+        await idbHttpBackend.stop();
+
+        idbTestClient = new TestClient(selfUserId, "DEVICE", selfAccessToken, undefined, {
+            store: new IndexedDBStore({
+                indexedDB: global.indexedDB,
+                dbName: "test",
+            }),
+        });
+        idbHttpBackend = idbTestClient.httpBackend;
+        idbClient = idbTestClient.client;
+        await idbClient.store.startup();
+
+        idbHttpBackend.when("GET", "/versions").respond(200, { versions: ["v1.4"] });
+        idbHttpBackend.when("GET", "/pushrules/").respond(200, {});
+        idbHttpBackend.when("POST", "/filter").respond(200, { filter_id: "a filter id" });
+        idbHttpBackend.when("GET", "/sync").respond(200, syncData);
+
+        await startClient(idbClient);
+        assertEventsExpected(idbClient);
+
+        idbHttpBackend.verifyNoOutstandingExpectation();
+        await idbClient.stopClient();
+        await idbHttpBackend.stop();
+    });
 });
@@ -89,7 +89,7 @@ describe("MatrixClient syncing", () => {

        const thread = mkThread({ room, client: client!, authorId: selfUserId, participantUserIds: [selfUserId] });
        const threadReply = thread.events.at(-1)!;
-        room.addLiveEvents([thread.rootEvent]);
+        await room.addLiveEvents([thread.rootEvent]);

        // Initialize read receipt datastructure before testing the reaction
        room.addReceiptToStructure(thread.rootEvent.getId()!, ReceiptType.Read, selfUserId, { ts: 1 }, false);
@@ -179,7 +179,6 @@ describe("MatrixClient syncing", () => {
                            events: [
                                {
                                    content: {
-                                        creator: userB,
                                        room_version: "9",
                                    },
                                    origin_server_ts: 1,
@@ -377,6 +376,7 @@ describe("MatrixClient syncing", () => {
                },
                [Category.Leave]: {},
                [Category.Invite]: {},
+                [Category.Knock]: {},
            },
        };
    }
@@ -1,170 +0,0 @@
-/*
-Copyright 2022 The Matrix.org Foundation C.I.C.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-import { Account } from "@matrix-org/olm";
-
-import { logger } from "../../src/logger";
-import { decodeRecoveryKey } from "../../src/crypto/recoverykey";
-import { IKeyBackupInfo, IKeyBackupSession } from "../../src/crypto/keybackup";
-import { TestClient } from "../TestClient";
-import { IEvent } from "../../src";
-import { MatrixEvent, MatrixEventEvent } from "../../src/models/event";
-
-const ROOM_ID = "!ROOM:ID";
-
-const SESSION_ID = "o+21hSjP+mgEmcfdslPsQdvzWnkdt0Wyo00Kp++R8Kc";
-
-const ENCRYPTED_EVENT: Partial<IEvent> = {
-    type: "m.room.encrypted",
-    content: {
-        algorithm: "m.megolm.v1.aes-sha2",
-        sender_key: "SENDER_CURVE25519",
-        session_id: SESSION_ID,
-        ciphertext:
-            "AwgAEjD+VwXZ7PoGPRS/H4kwpAsMp/g+WPvJVtPEKE8fmM9IcT/N" +
-            "CiwPb8PehecDKP0cjm1XO88k6Bw3D17aGiBHr5iBoP7oSw8CXULXAMTkBl" +
-            "mkufRQq2+d0Giy1s4/Cg5n13jSVrSb2q7VTSv1ZHAFjUCsLSfR0gxqcQs",
-    },
-    room_id: "!ROOM:ID",
-    event_id: "$event1",
-    origin_server_ts: 1507753886000,
-};
-
-const CURVE25519_KEY_BACKUP_DATA: IKeyBackupSession = {
-    first_message_index: 0,
-    forwarded_count: 0,
-    is_verified: false,
-    session_data: {
-        ciphertext:
-            "2z2M7CZ+azAiTHN1oFzZ3smAFFt+LEOYY6h3QO3XXGdw" +
-            "6YpNn/gpHDO6I/rgj1zNd4FoTmzcQgvKdU8kN20u5BWRHxaHTZ" +
-            "Slne5RxE6vUdREsBgZePglBNyG0AogR/PVdcrv/v18Y6rLM5O9" +
-            "SELmwbV63uV9Kuu/misMxoqbuqEdG7uujyaEKtjlQsJ5MGPQOy" +
-            "Syw7XrnesSwF6XWRMxcPGRV0xZr3s9PI350Wve3EncjRgJ9IGF" +
-            "ru1bcptMqfXgPZkOyGvrphHoFfoK7nY3xMEHUiaTRfRIjq8HNV" +
-            "4o8QY1qmWGnxNBQgOlL8MZlykjg3ULmQ3DtFfQPj/YYGS3jzxv" +
-            "C+EBjaafmsg+52CTeK3Rswu72PX450BnSZ1i3If4xWAUKvjTpe" +
-            "Ug5aDLqttOv1pITolTJDw5W/SD+b5rjEKg1CFCHGEGE9wwV3Nf" +
-            "QHVCQL+dfpd7Or0poy4dqKMAi3g0o3Tg7edIF8d5rREmxaALPy" +
-            "iie8PHD8mj/5Y0GLqrac4CD6+Mop7eUTzVovprjg",
-        mac: "5lxYBHQU80M",
-        ephemeral: "/Bn0A4UMFwJaDDvh0aEk1XZj3k1IfgCxgFY9P9a0b14",
-    },
-};
-
-const CURVE25519_BACKUP_INFO: IKeyBackupInfo = {
-    algorithm: "m.megolm_backup.v1.curve25519-aes-sha2",
-    version: "1",
-    auth_data: {
-        public_key: "hSDwCYkwp1R0i33ctD73Wg2/Og0mOBr066SpjqqbTmo",
-    },
-};
-
-const RECOVERY_KEY = "EsTc LW2K PGiF wKEA 3As5 g5c4 BXwk qeeJ ZJV8 Q9fu gUMN UE4d";
-
-/**
- * start an Olm session with a given recipient
- */
-function createOlmSession(olmAccount: Olm.Account, recipientTestClient: TestClient): Promise<Olm.Session> {
-    return recipientTestClient.awaitOneTimeKeyUpload().then((keys) => {
-        const otkId = Object.keys(keys)[0];
-        const otk = keys[otkId];
-
-        const session = new global.Olm.Session();
-        session.create_outbound(olmAccount, recipientTestClient.getDeviceKey(), otk.key);
-        return session;
-    });
-}
-
-describe("megolm key backups", function () {
-    if (!global.Olm) {
-        logger.warn("not running megolm tests: Olm not present");
-        return;
-    }
-    const Olm = global.Olm;
-    let testOlmAccount: Olm.Account;
-    let aliceTestClient: TestClient;
-
-    const setupTestClient = (): [Account, TestClient] => {
-        const aliceTestClient = new TestClient("@alice:localhost", "xzcvb", "akjgkrgjs");
-        const testOlmAccount = new Olm.Account();
-        testOlmAccount!.create();
-
-        return [testOlmAccount, aliceTestClient];
-    };
-
-    beforeAll(function () {
-        return Olm.init();
-    });
-
-    beforeEach(async function () {
-        [testOlmAccount, aliceTestClient] = setupTestClient();
-        await aliceTestClient!.client.initCrypto();
-        aliceTestClient!.client.crypto!.backupManager.backupInfo = CURVE25519_BACKUP_INFO;
-    });
-
-    afterEach(function () {
-        return aliceTestClient!.stop();
-    });
-
-    it("Alice checks key backups when receiving a message she can't decrypt", function () {
-        const syncResponse = {
-            next_batch: 1,
-            rooms: {
-                join: {
-                    [ROOM_ID]: {
-                        timeline: {
-                            events: [ENCRYPTED_EVENT],
-                        },
-                    },
-                },
-            },
-        };
-
-        return aliceTestClient!
-            .start()
-            .then(() => {
-                return createOlmSession(testOlmAccount, aliceTestClient);
-            })
-            .then(() => {
-                const privkey = decodeRecoveryKey(RECOVERY_KEY);
-                return aliceTestClient!.client!.crypto!.storeSessionBackupPrivateKey(privkey);
-            })
-            .then(() => {
-                aliceTestClient!.httpBackend.when("GET", "/sync").respond(200, syncResponse);
-                aliceTestClient!.expectKeyBackupQuery(ROOM_ID, SESSION_ID, 200, CURVE25519_KEY_BACKUP_DATA);
-                return aliceTestClient!.httpBackend.flushAllExpected();
-            })
-            .then(function (): Promise<MatrixEvent> {
-                const room = aliceTestClient!.client.getRoom(ROOM_ID)!;
-                const event = room.getLiveTimeline().getEvents()[0];
-
-                if (event.getContent()) {
-                    return Promise.resolve(event);
-                }
-
-                return new Promise((resolve, reject) => {
-                    event.once(MatrixEventEvent.Decrypted, (ev) => {
-                        logger.log(`${Date.now()} event ${event.getId()} now decrypted`);
-                        resolve(ev);
-                    });
-                });
-            })
-            .then((event) => {
-                expect(event.getContent()).toEqual("testytest");
-            });
-    });
-});
@@ -20,7 +20,7 @@ import { fail } from "assert";

 import { SlidingSync, SlidingSyncEvent, MSC3575RoomData, SlidingSyncState, Extension } from "../../src/sliding-sync";
 import { TestClient } from "../TestClient";
-import { IRoomEvent, IStateEvent } from "../../src/sync-accumulator";
+import { IRoomEvent, IStateEvent } from "../../src";
 import {
    MatrixClient,
    MatrixEvent,
@@ -39,9 +39,10 @@ import {
 } from "../../src";
 import { SlidingSyncSdk } from "../../src/sliding-sync-sdk";
 import { SyncApiOptions, SyncState } from "../../src/sync";
-import { IStoredClientOpts } from "../../src/client";
+import { IStoredClientOpts } from "../../src";
 import { logger } from "../../src/logger";
 import { emitPromise } from "../test-utils/test-utils";
+import { defer } from "../../src/utils";

 describe("SlidingSyncSdk", () => {
    let client: MatrixClient | undefined;
@@ -120,7 +121,7 @@ describe("SlidingSyncSdk", () => {
            await client!.initCrypto();
            syncOpts.cryptoCallbacks = syncOpts.crypto = client!.crypto;
        }
-        httpBackend!.when("GET", "/_matrix/client/r0/pushrules").respond(200, {});
+        httpBackend!.when("GET", "/_matrix/client/v3/pushrules").respond(200, {});
        sdk = new SlidingSyncSdk(mockSlidingSync, client, testOpts, syncOpts);
    };

@@ -187,7 +188,7 @@ describe("SlidingSyncSdk", () => {
                [roomA]: {
                    name: "A",
                    required_state: [
-                        mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                        mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                        mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                        mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                        mkOwnStateEvent(EventType.RoomName, { name: "A" }, ""),
@@ -202,7 +203,7 @@ describe("SlidingSyncSdk", () => {
                    name: "B",
                    required_state: [],
                    timeline: [
-                        mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                        mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                        mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                        mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                        mkOwnEvent(EventType.RoomMessage, { body: "hello B" }),
@@ -214,7 +215,7 @@ describe("SlidingSyncSdk", () => {
                    name: "C",
                    required_state: [],
                    timeline: [
-                        mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                        mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                        mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                        mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                        mkOwnEvent(EventType.RoomMessage, { body: "hello C" }),
@@ -227,7 +228,7 @@ describe("SlidingSyncSdk", () => {
                    name: "D",
                    required_state: [],
                    timeline: [
-                        mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                        mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                        mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                        mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                        mkOwnEvent(EventType.RoomMessage, { body: "hello D" }),
@@ -263,7 +264,7 @@ describe("SlidingSyncSdk", () => {
                [roomF]: {
                    name: "#foo:localhost",
                    required_state: [
-                        mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                        mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                        mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                        mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                        mkOwnStateEvent(EventType.RoomCanonicalAlias, { alias: "#foo:localhost" }, ""),
@@ -279,7 +280,7 @@ describe("SlidingSyncSdk", () => {
                    name: "G",
                    required_state: [],
                    timeline: [
-                        mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                        mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                        mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                        mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                    ],
@@ -291,7 +292,7 @@ describe("SlidingSyncSdk", () => {
                    name: "H",
                    required_state: [],
                    timeline: [
-                        mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                        mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                        mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                        mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                        mkOwnEvent(EventType.RoomMessage, { body: "live event" }),
@@ -301,67 +302,57 @@ describe("SlidingSyncSdk", () => {
                },
            };

-            it("can be created with required_state and timeline", () => {
+            it("can be created with required_state and timeline", async () => {
                mockSlidingSync!.emit(SlidingSyncEvent.RoomData, roomA, data[roomA]);
+                await emitPromise(client!, ClientEvent.Room);
                const gotRoom = client!.getRoom(roomA);
-                expect(gotRoom).toBeDefined();
-                if (gotRoom == null) {
-                    return;
-                }
-                expect(gotRoom.name).toEqual(data[roomA].name);
-                expect(gotRoom.getMyMembership()).toEqual("join");
-                assertTimelineEvents(gotRoom.getLiveTimeline().getEvents().slice(-2), data[roomA].timeline);
+                expect(gotRoom).toBeTruthy();
+                expect(gotRoom!.name).toEqual(data[roomA].name);
+                expect(gotRoom!.getMyMembership()).toEqual("join");
+                assertTimelineEvents(gotRoom!.getLiveTimeline().getEvents().slice(-2), data[roomA].timeline);
            });

-            it("can be created with timeline only", () => {
+            it("can be created with timeline only", async () => {
                mockSlidingSync!.emit(SlidingSyncEvent.RoomData, roomB, data[roomB]);
+                await emitPromise(client!, ClientEvent.Room);
                const gotRoom = client!.getRoom(roomB);
-                expect(gotRoom).toBeDefined();
-                if (gotRoom == null) {
-                    return;
-                }
-                expect(gotRoom.name).toEqual(data[roomB].name);
-                expect(gotRoom.getMyMembership()).toEqual("join");
-                assertTimelineEvents(gotRoom.getLiveTimeline().getEvents().slice(-5), data[roomB].timeline);
+                expect(gotRoom).toBeTruthy();
+                expect(gotRoom!.name).toEqual(data[roomB].name);
+                expect(gotRoom!.getMyMembership()).toEqual("join");
+                assertTimelineEvents(gotRoom!.getLiveTimeline().getEvents().slice(-5), data[roomB].timeline);
            });

-            it("can be created with a highlight_count", () => {
+            it("can be created with a highlight_count", async () => {
                mockSlidingSync!.emit(SlidingSyncEvent.RoomData, roomC, data[roomC]);
+                await emitPromise(client!, ClientEvent.Room);
                const gotRoom = client!.getRoom(roomC);
-                expect(gotRoom).toBeDefined();
-                if (gotRoom == null) {
-                    return;
-                }
-                expect(gotRoom.getUnreadNotificationCount(NotificationCountType.Highlight)).toEqual(
+                expect(gotRoom).toBeTruthy();
+                expect(gotRoom!.getUnreadNotificationCount(NotificationCountType.Highlight)).toEqual(
                    data[roomC].highlight_count,
                );
            });

-            it("can be created with a notification_count", () => {
+            it("can be created with a notification_count", async () => {
                mockSlidingSync!.emit(SlidingSyncEvent.RoomData, roomD, data[roomD]);
+                await emitPromise(client!, ClientEvent.Room);
                const gotRoom = client!.getRoom(roomD);
-                expect(gotRoom).toBeDefined();
-                if (gotRoom == null) {
-                    return;
-                }
-                expect(gotRoom.getUnreadNotificationCount(NotificationCountType.Total)).toEqual(
+                expect(gotRoom).toBeTruthy();
+                expect(gotRoom!.getUnreadNotificationCount(NotificationCountType.Total)).toEqual(
                    data[roomD].notification_count,
                );
            });

-            it("can be created with an invited/joined_count", () => {
+            it("can be created with an invited/joined_count", async () => {
                mockSlidingSync!.emit(SlidingSyncEvent.RoomData, roomG, data[roomG]);
+                await emitPromise(client!, ClientEvent.Room);
                const gotRoom = client!.getRoom(roomG);
-                expect(gotRoom).toBeDefined();
-                if (gotRoom == null) {
-                    return;
-                }
-                expect(gotRoom.getInvitedMemberCount()).toEqual(data[roomG].invited_count);
-                expect(gotRoom.getJoinedMemberCount()).toEqual(data[roomG].joined_count);
+                expect(gotRoom).toBeTruthy();
+                expect(gotRoom!.getInvitedMemberCount()).toEqual(data[roomG].invited_count);
+                expect(gotRoom!.getJoinedMemberCount()).toEqual(data[roomG].joined_count);
            });

-            it("can be created with live events", () => {
-                let seenLiveEvent = false;
+            it("can be created with live events", async () => {
+                const seenLiveEventDeferred = defer<boolean>();
                const listener = (
                    ev: MatrixEvent,
                    room?: Room,
@@ -371,43 +362,37 @@ describe("SlidingSyncSdk", () => {
                ) => {
                    if (timelineData?.liveEvent) {
                        assertTimelineEvents([ev], data[roomH].timeline.slice(-1));
-                        seenLiveEvent = true;
+                        seenLiveEventDeferred.resolve(true);
                    }
                };
                client!.on(RoomEvent.Timeline, listener);
                mockSlidingSync!.emit(SlidingSyncEvent.RoomData, roomH, data[roomH]);
+                await emitPromise(client!, ClientEvent.Room);
                client!.off(RoomEvent.Timeline, listener);
                const gotRoom = client!.getRoom(roomH);
-                expect(gotRoom).toBeDefined();
-                if (gotRoom == null) {
-                    return;
-                }
-                expect(gotRoom.name).toEqual(data[roomH].name);
-                expect(gotRoom.getMyMembership()).toEqual("join");
+                expect(gotRoom).toBeTruthy();
+                expect(gotRoom!.name).toEqual(data[roomH].name);
+                expect(gotRoom!.getMyMembership()).toEqual("join");
                // check the entire timeline is correct
-                assertTimelineEvents(gotRoom.getLiveTimeline().getEvents(), data[roomH].timeline);
-                expect(seenLiveEvent).toBe(true);
+                assertTimelineEvents(gotRoom!.getLiveTimeline().getEvents(), data[roomH].timeline);
+                await expect(seenLiveEventDeferred.promise).resolves.toBeTruthy();
            });

-            it("can be created with invite_state", () => {
+            it("can be created with invite_state", async () => {
                mockSlidingSync!.emit(SlidingSyncEvent.RoomData, roomE, data[roomE]);
+                await emitPromise(client!, ClientEvent.Room);
                const gotRoom = client!.getRoom(roomE);
-                expect(gotRoom).toBeDefined();
-                if (gotRoom == null) {
-                    return;
-                }
-                expect(gotRoom.getMyMembership()).toEqual("invite");
-                expect(gotRoom.currentState.getJoinRule()).toEqual(JoinRule.Invite);
+                expect(gotRoom).toBeTruthy();
+                expect(gotRoom!.getMyMembership()).toEqual("invite");
+                expect(gotRoom!.currentState.getJoinRule()).toEqual(JoinRule.Invite);
            });

-            it("uses the 'name' field to caluclate the room name", () => {
+            it("uses the 'name' field to caluclate the room name", async () => {
                mockSlidingSync!.emit(SlidingSyncEvent.RoomData, roomF, data[roomF]);
+                await emitPromise(client!, ClientEvent.Room);
                const gotRoom = client!.getRoom(roomF);
-                expect(gotRoom).toBeDefined();
-                if (gotRoom == null) {
-                    return;
-                }
-                expect(gotRoom.name).toEqual(data[roomF].name);
+                expect(gotRoom).toBeTruthy();
+                expect(gotRoom!.name).toEqual(data[roomF].name);
            });

            describe("updating", () => {
@@ -419,33 +404,33 @@ describe("SlidingSyncSdk", () => {
                        name: data[roomA].name,
                    });
                    const gotRoom = client!.getRoom(roomA);
-                    expect(gotRoom).toBeDefined();
+                    expect(gotRoom).toBeTruthy();
                    if (gotRoom == null) {
                        return;
                    }
                    const newTimeline = data[roomA].timeline;
                    newTimeline.push(newEvent);
-                    assertTimelineEvents(gotRoom.getLiveTimeline().getEvents().slice(-3), newTimeline);
+                    assertTimelineEvents(gotRoom!.getLiveTimeline().getEvents().slice(-3), newTimeline);
                });

                it("can update with a new required_state event", async () => {
                    let gotRoom = client!.getRoom(roomB);
-                    expect(gotRoom).toBeDefined();
+                    expect(gotRoom).toBeTruthy();
                    if (gotRoom == null) {
                        return;
                    }
-                    expect(gotRoom.getJoinRule()).toEqual(JoinRule.Invite); // default
+                    expect(gotRoom!.getJoinRule()).toEqual(JoinRule.Invite); // default
                    mockSlidingSync!.emit(SlidingSyncEvent.RoomData, roomB, {
                        required_state: [mkOwnStateEvent("m.room.join_rules", { join_rule: "restricted" }, "")],
                        timeline: [],
                        name: data[roomB].name,
                    });
                    gotRoom = client!.getRoom(roomB);
-                    expect(gotRoom).toBeDefined();
+                    expect(gotRoom).toBeTruthy();
                    if (gotRoom == null) {
                        return;
                    }
-                    expect(gotRoom.getJoinRule()).toEqual(JoinRule.Restricted);
+                    expect(gotRoom!.getJoinRule()).toEqual(JoinRule.Restricted);
                });

                it("can update with a new highlight_count", async () => {
@@ -456,11 +441,11 @@ describe("SlidingSyncSdk", () => {
                        highlight_count: 1,
                    });
                    const gotRoom = client!.getRoom(roomC);
-                    expect(gotRoom).toBeDefined();
+                    expect(gotRoom).toBeTruthy();
                    if (gotRoom == null) {
                        return;
                    }
-                    expect(gotRoom.getUnreadNotificationCount(NotificationCountType.Highlight)).toEqual(1);
+                    expect(gotRoom!.getUnreadNotificationCount(NotificationCountType.Highlight)).toEqual(1);
                });

                it("can update with a new notification_count", async () => {
@@ -471,11 +456,11 @@ describe("SlidingSyncSdk", () => {
                        notification_count: 1,
                    });
                    const gotRoom = client!.getRoom(roomD);
-                    expect(gotRoom).toBeDefined();
+                    expect(gotRoom).toBeTruthy();
                    if (gotRoom == null) {
                        return;
                    }
-                    expect(gotRoom.getUnreadNotificationCount(NotificationCountType.Total)).toEqual(1);
+                    expect(gotRoom!.getUnreadNotificationCount(NotificationCountType.Total)).toEqual(1);
                });

                it("can update with a new joined_count", () => {
@@ -486,11 +471,11 @@ describe("SlidingSyncSdk", () => {
                        joined_count: 1,
                    });
                    const gotRoom = client!.getRoom(roomG);
-                    expect(gotRoom).toBeDefined();
+                    expect(gotRoom).toBeTruthy();
                    if (gotRoom == null) {
                        return;
                    }
-                    expect(gotRoom.getJoinedMemberCount()).toEqual(1);
+                    expect(gotRoom!.getJoinedMemberCount()).toEqual(1);
                });

                // Regression test for a bug which caused the timeline entries to be out-of-order
@@ -512,7 +497,7 @@ describe("SlidingSyncSdk", () => {
                        initial: true, // e.g requested via room subscription
                    });
                    const gotRoom = client!.getRoom(roomA);
-                    expect(gotRoom).toBeDefined();
+                    expect(gotRoom).toBeTruthy();
                    if (gotRoom == null) {
                        return;
                    }
@@ -530,7 +515,7 @@ describe("SlidingSyncSdk", () => {
                    );

                    // we expect the timeline now to be oldTimeline (so the old events are in fact old)
-                    assertTimelineEvents(gotRoom.getLiveTimeline().getEvents(), oldTimeline);
+                    assertTimelineEvents(gotRoom!.getLiveTimeline().getEvents(), oldTimeline);
                });
            });
        });
@@ -617,7 +602,7 @@ describe("SlidingSyncSdk", () => {
                name: "Room with Invite",
                required_state: [],
                timeline: [
-                    mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                    mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                    mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                    mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                    mkOwnStateEvent(EventType.RoomMember, { membership: "invite" }, invitee),
@@ -626,9 +611,9 @@ describe("SlidingSyncSdk", () => {
            await httpBackend!.flush("/profile", 1, 1000);
            await emitPromise(client!, RoomMemberEvent.Name);
            const room = client!.getRoom(roomId)!;
-            expect(room).toBeDefined();
+            expect(room).toBeTruthy();
            const inviteeMember = room.getMember(invitee)!;
-            expect(inviteeMember).toBeDefined();
+            expect(inviteeMember).toBeTruthy();
            expect(inviteeMember.getMxcAvatarUrl()).toEqual(inviteeProfile.avatar_url);
            expect(inviteeMember.name).toEqual(inviteeProfile.displayname);
        });
@@ -723,7 +708,7 @@ describe("SlidingSyncSdk", () => {
                ],
            });
            globalData = client!.getAccountData(globalType)!;
-            expect(globalData).toBeDefined();
+            expect(globalData).toBeTruthy();
            expect(globalData.getContent()).toEqual(globalContent);
        });

@@ -733,7 +718,7 @@ describe("SlidingSyncSdk", () => {
                name: "Room with account data",
                required_state: [],
                timeline: [
-                    mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                    mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                    mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                    mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                    mkOwnEvent(EventType.RoomMessage, { body: "hello" }),
@@ -744,6 +729,7 @@ describe("SlidingSyncSdk", () => {
                foo: "bar",
            };
            const roomType = "test";
+            await emitPromise(client!, ClientEvent.Room);
            ext.onResponse({
                rooms: {
                    [roomId]: [
@@ -755,9 +741,9 @@ describe("SlidingSyncSdk", () => {
                },
            });
            const room = client!.getRoom(roomId)!;
-            expect(room).toBeDefined();
+            expect(room).toBeTruthy();
            const event = room.getAccountData(roomType)!;
-            expect(event).toBeDefined();
+            expect(event).toBeTruthy();
            expect(event.getContent()).toEqual(roomContent);
        });

@@ -936,15 +922,16 @@ describe("SlidingSyncSdk", () => {
                name: "Room with typing",
                required_state: [],
                timeline: [
-                    mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                    mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                    mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                    mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                    mkOwnEvent(EventType.RoomMessage, { body: "hello" }),
                ],
                initial: true,
            });
+            await emitPromise(client!, ClientEvent.Room);
            const room = client!.getRoom(roomId)!;
-            expect(room).toBeDefined();
+            expect(room).toBeTruthy();
            expect(room.getMember(selfUserId)?.typing).toEqual(false);
            ext.onResponse({
                rooms: {
@@ -976,7 +963,7 @@ describe("SlidingSyncSdk", () => {
                name: "Room with typing",
                required_state: [],
                timeline: [
-                    mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                    mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                    mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                    mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                    mkOwnEvent(EventType.RoomMessage, { body: "hello" }),
@@ -984,7 +971,7 @@ describe("SlidingSyncSdk", () => {
                initial: true,
            });
            const room = client!.getRoom(roomId)!;
-            expect(room).toBeDefined();
+            expect(room).toBeTruthy();
            expect(room.getMember(selfUserId)?.typing).toEqual(false);
            ext.onResponse({
                rooms: {
@@ -1062,7 +1049,7 @@ describe("SlidingSyncSdk", () => {
                name: "Room with receipts",
                required_state: [],
                timeline: [
-                    mkOwnStateEvent(EventType.RoomCreate, { creator: selfUserId }, ""),
+                    mkOwnStateEvent(EventType.RoomCreate, {}, ""),
                    mkOwnStateEvent(EventType.RoomMember, { membership: "join" }, selfUserId),
                    mkOwnStateEvent(EventType.RoomPowerLevels, { users: { [selfUserId]: 100 } }, ""),
                    {
@@ -1077,12 +1064,13 @@ describe("SlidingSyncSdk", () => {
                ],
                initial: true,
            });
+            await emitPromise(client!, ClientEvent.Room);
            const room = client!.getRoom(roomId)!;
-            expect(room).toBeDefined();
+            expect(room).toBeTruthy();
            expect(room.getReadReceiptForUserId(alice, true)).toBeNull();
            ext.onResponse(generateReceiptResponse(alice, roomId, lastEvent.event_id, "m.read", 1234567));
            const receipt = room.getReadReceiptForUserId(alice);
-            expect(receipt).toBeDefined();
+            expect(receipt).toBeTruthy();
            expect(receipt?.eventId).toEqual(lastEvent.event_id);
            expect(receipt?.data.ts).toEqual(1234567);
            expect(receipt?.data.thread_id).toBeFalsy();
@@ -1161,11 +1161,6 @@ describe("SlidingSync", () => {
            httpBackend!.when("POST", syncUrl).check(pushTxn).respond(200, { pos: "f" }); // missing txn_id
            await httpBackend!.flushAllExpected();

-            // attach rejection handlers now else if we do it later Jest treats that as an unhandled rejection
-            // which is a fail.
-            expect(failPromise).rejects.toEqual(gotTxnIds[0]);
-            expect(failPromise2).rejects.toEqual(gotTxnIds[1]);
-
            const okPromise = slidingSync.setListRanges("a", [[0, 20]]);
            let txnId: string | undefined;
            httpBackend!
@@ -1180,8 +1175,12 @@ describe("SlidingSync", () => {
                        txn_id: txnId,
                    };
                });
-            await httpBackend!.flushAllExpected();
-            await okPromise;
+            await Promise.all([
+                expect(failPromise).rejects.toEqual(gotTxnIds[0]),
+                expect(failPromise2).rejects.toEqual(gotTxnIds[1]),
+                httpBackend!.flushAllExpected(),
+                okPromise,
+            ]);

            expect(txnId).toBeDefined();
        });
@@ -1200,7 +1199,6 @@ describe("SlidingSync", () => {

            // attach rejection handlers now else if we do it later Jest treats that as an unhandled rejection
            // which is a fail.
-            expect(A).rejects.toEqual(gotTxnIds[0]);

            const C = slidingSync.setListRanges("a", [[0, 20]]);
            let pendingC = true;
@@ -1217,9 +1215,12 @@ describe("SlidingSync", () => {
                        txn_id: gotTxnIds[1],
                    };
                });
-            await httpBackend!.flushAllExpected();
-            // A is rejected, see above
-            expect(B).resolves.toEqual(gotTxnIds[1]); // B is resolved
+            await Promise.all([
+                expect(A).rejects.toEqual(gotTxnIds[0]),
+                httpBackend!.flushAllExpected(),
+                // A is rejected, see above
+                expect(B).resolves.toEqual(gotTxnIds[1]), // B is resolved
+            ]);
            expect(pendingC).toBe(true); // C is pending still
        });
        it("should do nothing for unknown txn_ids", async () => {
@@ -23,5 +23,5 @@ try {
    global.Olm = require("@matrix-org/olm");
    logger.log("loaded libolm");
 } catch (e) {
-    logger.warn("unable to run crypto tests: libolm not available");
+    logger.warn("unable to run crypto tests: libolm not available", e);
 }
@@ -75,8 +75,6 @@ export class E2EKeyReceiver implements IE2EKeyReceiver {
            const listener = (url: string, options: RequestInit) =>
                this.onKeyUploadRequest(resolveOneTimeKeys, options);

-            // catch both r0 and v3 variants
-            fetchMock.post(new URL("/_matrix/client/r0/keys/upload", homeserverUrl).toString(), listener);
            fetchMock.post(new URL("/_matrix/client/v3/keys/upload", homeserverUrl).toString(), listener);
        });
    }
@@ -145,6 +143,13 @@ export class E2EKeyReceiver implements IE2EKeyReceiver {
        return this.deviceKeys.keys[keyIds[0]];
    }

+    /**
+     * If the device keys have already been uploaded, return them. Else return null.
+     */
+    public getUploadedDeviceKeys(): IDeviceKeys | null {
+        return this.deviceKeys;
+    }
+
    /**
     * If one-time keys have already been uploaded, return them. Otherwise,
     * set up an expectation that the keys will be uploaded, and wait for
@@ -0,0 +1,119 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import fetchMock from "fetch-mock-jest";
+
+import { MapWithDefault } from "../../src/utils";
+import { IDownloadKeyResult } from "../../src";
+import { IDeviceKeys } from "../../src/@types/crypto";
+import { E2EKeyReceiver } from "./E2EKeyReceiver";
+
+/**
+ * An object which intercepts `/keys/query` fetches via fetch-mock.
+ */
+export class E2EKeyResponder {
+    private deviceKeysByUserByDevice = new MapWithDefault<string, Map<string, any>>(() => new Map());
+    private e2eKeyReceiversByUser = new Map<string, E2EKeyReceiver>();
+    private masterKeysByUser: Record<string, any> = {};
+    private selfSigningKeysByUser: Record<string, any> = {};
+    private userSigningKeysByUser: Record<string, any> = {};
+
+    /**
+     * Construct a new E2EKeyResponder.
+     *
+     * It will immediately register an intercept of `/keys/query` requests for the given homeserverUrl.
+     * Only /query requests made to this server will be intercepted: this allows a single test to use more than one
+     * client and have the keys collected separately.
+     *
+     * @param homeserverUrl - the Homeserver Url of the client under test.
+     */
+    public constructor(homeserverUrl: string) {
+        // set up a listener for /keys/query.
+        const listener = (url: string, options: RequestInit) => this.onKeyQueryRequest(options);
+        fetchMock.post(new URL("/_matrix/client/v3/keys/query", homeserverUrl).toString(), listener);
+    }
+
+    private onKeyQueryRequest(options: RequestInit) {
+        const content = JSON.parse(options.body as string);
+        const usersToReturn = Object.keys(content["device_keys"]);
+        const response = {
+            device_keys: {} as { [userId: string]: any },
+            master_keys: {} as { [userId: string]: any },
+            self_signing_keys: {} as { [userId: string]: any },
+            user_signing_keys: {} as { [userId: string]: any },
+            failures: {} as { [serverName: string]: any },
+        };
+        for (const user of usersToReturn) {
+            const userKeys = this.deviceKeysByUserByDevice.get(user);
+            if (userKeys !== undefined) {
+                response.device_keys[user] = Object.fromEntries(userKeys.entries());
+            }
+
+            const e2eKeyReceiver = this.e2eKeyReceiversByUser.get(user);
+            if (e2eKeyReceiver !== undefined) {
+                const deviceKeys = e2eKeyReceiver.getUploadedDeviceKeys();
+                if (deviceKeys !== null) {
+                    response.device_keys[user] ??= {};
+                    response.device_keys[user][deviceKeys.device_id] = deviceKeys;
+                }
+            }
+
+            if (this.masterKeysByUser.hasOwnProperty(user)) {
+                response.master_keys[user] = this.masterKeysByUser[user];
+            }
+            if (this.selfSigningKeysByUser.hasOwnProperty(user)) {
+                response.self_signing_keys[user] = this.selfSigningKeysByUser[user];
+            }
+            if (this.userSigningKeysByUser.hasOwnProperty(user)) {
+                response.user_signing_keys[user] = this.userSigningKeysByUser[user];
+            }
+        }
+        return response;
+    }
+
+    /**
+     * Add a set of device keys for return by a future `/keys/query`, as if they had been `/upload`ed
+     *
+     * @param keys - device keys for this device.
+     */
+    public addDeviceKeys(keys: IDeviceKeys) {
+        this.deviceKeysByUserByDevice.getOrCreate(keys.user_id).set(keys.device_id, keys);
+    }
+
+    /** Add a set of cross-signing keys for return by a future `/keys/query`, as if they had been `/keys/device_signing/upload`ed
+     *
+     * @param data cross-signing data
+     */
+    public addCrossSigningData(
+        data: Pick<IDownloadKeyResult, "master_keys" | "self_signing_keys" | "user_signing_keys">,
+    ) {
+        Object.assign(this.masterKeysByUser, data.master_keys);
+        Object.assign(this.selfSigningKeysByUser, data.self_signing_keys);
+        Object.assign(this.userSigningKeysByUser, data.user_signing_keys);
+    }
+
+    /**
+     * Add an E2EKeyReceiver to poll for uploaded keys
+     *
+     * Any keys which have been uploaded to the given `E2EKeyReceiver` at the time of the `/keys/query` request will
+     * be added to the response.
+     *
+     * @param e2eKeyReceiver
+     */
+    public addKeyReceiver(userId: string, e2eKeyReceiver: E2EKeyReceiver) {
+        this.e2eKeyReceiversByUser.set(userId, e2eKeyReceiver);
+    }
+}
@@ -75,7 +75,7 @@ export class SyncResponder implements ISyncResponder {
     */
    public constructor(homeserverUrl: string) {
        this.debug = debugFunc(`sync-responder:[${homeserverUrl}]`);
-        fetchMock.get("begin:" + new URL("/_matrix/client/r0/sync?", homeserverUrl).toString(), (_url, _options) =>
+        fetchMock.get("begin:" + new URL("/_matrix/client/v3/sync?", homeserverUrl).toString(), (_url, _options) =>
            this.onSyncRequest(),
        );
    }
@@ -86,7 +86,6 @@ export const mockClientMethodsEvents = () => ({
 * Returns basic mocked client methods related to server support
 */
 export const mockClientMethodsServer = (): Partial<Record<MethodLikeKeys<MatrixClient>, unknown>> => ({
-    doesServerSupportSeparateAddAndBind: jest.fn(),
    getIdentityServerUrl: jest.fn(),
    getHomeserverUrl: jest.fn(),
    getCapabilities: jest.fn().mockReturnValue({}),
@@ -0,0 +1,92 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import fetchMock from "fetch-mock-jest";
+
+import { KeyBackupInfo } from "../../src/crypto-api";
+
+/**
+ * Mock out the endpoints that the js-sdk calls when we call `MatrixClient.start()`.
+ *
+ * @param homeserverUrl - the homeserver url for the client under test
+ */
+export function mockInitialApiRequests(homeserverUrl: string) {
+    fetchMock.getOnce(new URL("/_matrix/client/versions", homeserverUrl).toString(), { versions: ["v1.1"] });
+    fetchMock.getOnce(new URL("/_matrix/client/v3/pushrules/", homeserverUrl).toString(), {});
+    fetchMock.postOnce(new URL("/_matrix/client/v3/user/%40alice%3Alocalhost/filter", homeserverUrl).toString(), {
+        filter_id: "fid",
+    });
+}
+
+/**
+ * Mock the requests needed to set up cross signing
+ *
+ * Return 404 error for `GET _matrix/client/v3/user/:userId/account_data/:type` request
+ * Return `{}` for `POST _matrix/client/v3/keys/signatures/upload` request (named `upload-sigs` for fetchMock check)
+ * Return `{}` for `POST /_matrix/client/(unstable|v3)/keys/device_signing/upload` request (named `upload-keys` for fetchMock check)
+ */
+export function mockSetupCrossSigningRequests(): void {
+    // have account_data requests return an empty object
+    fetchMock.get("express:/_matrix/client/v3/user/:userId/account_data/:type", {
+        status: 404,
+        body: { errcode: "M_NOT_FOUND", error: "Account data not found." },
+    });
+
+    // we expect a request to upload signatures for our device ...
+    fetchMock.post({ url: "path:/_matrix/client/v3/keys/signatures/upload", name: "upload-sigs" }, {});
+
+    // ... and one to upload the cross-signing keys (with UIA)
+    fetchMock.post(
+        // legacy crypto uses /unstable/; /v3/ is correct
+        {
+            url: new RegExp("/_matrix/client/(unstable|v3)/keys/device_signing/upload"),
+            name: "upload-keys",
+        },
+        {},
+    );
+}
+
+/**
+ * Mock out requests to `/room_keys/version`.
+ *
+ * Returns `404 M_NOT_FOUND` for GET requests until `POST room_keys/version` is called.
+ * Once the POST is done, `GET /room_keys/version` will return the posted backup
+ * instead of 404.
+ *
+ * @param backupVersion - The backup version that will be returned by `POST room_keys/version`.
+ */
+export function mockSetupMegolmBackupRequests(backupVersion: string): void {
+    fetchMock.get("path:/_matrix/client/v3/room_keys/version", {
+        status: 404,
+        body: {
+            errcode: "M_NOT_FOUND",
+            error: "No current backup version",
+        },
+    });
+
+    fetchMock.post("path:/_matrix/client/v3/room_keys/version", (url, request) => {
+        const backupData: KeyBackupInfo = JSON.parse(request.body?.toString() ?? "{}");
+        backupData.version = backupVersion;
+        backupData.count = 0;
+        backupData.etag = "zer";
+        fetchMock.get("path:/_matrix/client/v3/room_keys/version", backupData, {
+            overwriteRoutes: true,
+        });
+        return {
+            version: backupVersion,
+        };
+    });
+}
@@ -0,0 +1,53 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { OidcClientConfig } from "../../src";
+import { ValidatedIssuerMetadata } from "../../src/oidc/validate";
+
+/**
+ * Makes a valid OidcClientConfig with minimum valid values
+ * @param issuer used as the base for all other urls
+ * @returns OidcClientConfig
+ */
+export const makeDelegatedAuthConfig = (issuer = "https://auth.org/"): OidcClientConfig => {
+    const metadata = mockOpenIdConfiguration(issuer);
+
+    return {
+        issuer,
+        account: issuer + "account",
+        registrationEndpoint: metadata.registration_endpoint,
+        authorizationEndpoint: metadata.authorization_endpoint,
+        tokenEndpoint: metadata.token_endpoint,
+        metadata,
+    };
+};
+
+/**
+ * Useful for mocking <issuer>/.well-known/openid-configuration
+ * @param issuer used as the base for all other urls
+ * @returns ValidatedIssuerMetadata
+ */
+export const mockOpenIdConfiguration = (issuer = "https://auth.org/"): ValidatedIssuerMetadata => ({
+    issuer,
+    revocation_endpoint: issuer + "revoke",
+    token_endpoint: issuer + "token",
+    authorization_endpoint: issuer + "auth",
+    registration_endpoint: issuer + "registration",
+    jwks_uri: issuer + "jwks",
+    response_types_supported: ["code"],
+    grant_types_supported: ["authorization_code", "refresh_token"],
+    code_challenge_methods_supported: ["S256"],
+});
@@ -0,0 +1 @@
+/env
@@ -0,0 +1,654 @@
+#!/bin/env python
+#
+# Copyright 2023 The Matrix.org Foundation C.I.C.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""
+This file is a Python script to generate test data for crypto tests.
+
+To run it:
+
+python -m venv env
+./env/bin/pip install cryptography canonicaljson
+./env/bin/python generate-test-data.py > index.ts
+"""
+
+import base64
+import json
+import base58
+
+from canonicaljson import encode_canonical_json
+from cryptography.hazmat.primitives.asymmetric import ed25519, x25519
+from cryptography.hazmat.primitives.serialization import Encoding, PublicFormat
+from cryptography.hazmat.primitives import hashes, padding, hmac
+from cryptography.hazmat.primitives.kdf.hkdf import HKDF
+from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
+
+from random import randbytes, seed
+
+ALICE_DATA = {
+    "TEST_USER_ID": "@alice:localhost",
+    "TEST_DEVICE_ID": "test_device",
+    "TEST_ROOM_ID": "!room:id",
+    # any 32-byte string can be an ed25519 private key.
+    "TEST_DEVICE_PRIVATE_KEY_BYTES": b"deadbeefdeadbeefdeadbeefdeadbeef",
+    # any 32-byte string can be an curve25519 private key.
+    "TEST_DEVICE_CURVE_PRIVATE_KEY_BYTES": b"deadmuledeadmuledeadmuledeadmule",
+
+    "MASTER_CROSS_SIGNING_PRIVATE_KEY_BYTES": b"doyouspeakwhaaaaaaaaaaaaaaaaaale",
+    "USER_CROSS_SIGNING_PRIVATE_KEY_BYTES": b"useruseruseruseruseruseruseruser",
+    "SELF_CROSS_SIGNING_PRIVATE_KEY_BYTES": b"selfselfselfselfselfselfselfself",
+
+    # Private key for secure key backup. There are some sessions encrypted with this key in megolm-backup.spec.ts
+    "B64_BACKUP_DECRYPTION_KEY": "dwdtCnMYpX08FsFyUbJmRd9ML4frwJkqsXf7pR25LCo=",
+
+    "OTK": "j3fR3HemM16M7CWhoI4Sk5ZsdmdfQHsKL1xuSft6MSw"
+}
+
+BOB_DATA = {
+    "TEST_USER_ID": "@bob:xyz",
+    "TEST_DEVICE_ID": "bob_device",
+    "TEST_ROOM_ID": "!room:id",
+    # any 32-byte string can be an ed25519 private key.
+    "TEST_DEVICE_PRIVATE_KEY_BYTES": b"Deadbeefdeadbeefdeadbeefdeadbeef",
+    # any 32-byte string can be an curve25519 private key.
+    "TEST_DEVICE_CURVE_PRIVATE_KEY_BYTES": b"Deadmuledeadmuledeadmuledeadmule",
+
+    "MASTER_CROSS_SIGNING_PRIVATE_KEY_BYTES": b"Doyouspeakwhaaaaaaaaaaaaaaaaaale",
+    "USER_CROSS_SIGNING_PRIVATE_KEY_BYTES": b"Useruseruseruseruseruseruseruser",
+    "SELF_CROSS_SIGNING_PRIVATE_KEY_BYTES": b"Selfselfselfselfselfselfselfself",
+
+    # Private key for secure key backup. There are some sessions encrypted with this key in megolm-backup.spec.ts
+    "B64_BACKUP_DECRYPTION_KEY": "DwdtCnMYpX08FsFyUbJmRd9ML4frwJkqsXf7pR25LCo=",
+
+    "OTK": "j3fR3HemM16M7CWhoI4Sk5ZsdmdfQHsKL1xuSft6MSw"
+}
+
+def main() -> None:
+    print(
+        f"""\
+/* Test data for cryptography tests
+ *
+ * Do not edit by hand! This file is generated by `./generate-test-data.py`
+ */
+
+import {{ IDeviceKeys, IMegolmSessionData }} from "../../../src/@types/crypto";
+import {{ IDownloadKeyResult, IEvent }} from "../../../src";
+import {{ KeyBackupSession, KeyBackupInfo }} from "../../../src/crypto-api/keybackup";
+
+/* eslint-disable comma-dangle */
+
+// Alice data
+
+{build_test_data(ALICE_DATA)}
+// Bob data
+
+{build_test_data(BOB_DATA, "BOB_")}
+""",
+        end="",
+    )
+
+# Use static seed to have stable random test data upon new generation
+seed(10)
+
+def build_test_data(user_data, prefix = "") -> str:
+    private_key = ed25519.Ed25519PrivateKey.from_private_bytes(
+             user_data["TEST_DEVICE_PRIVATE_KEY_BYTES"]
+        )
+
+    device_curve_key = x25519.X25519PrivateKey.from_private_bytes(
+             user_data["TEST_DEVICE_CURVE_PRIVATE_KEY_BYTES"]
+        )
+
+    b64_public_key = encode_base64(
+        private_key.public_key().public_bytes(Encoding.Raw, PublicFormat.Raw)
+    )
+
+    device_data = {
+        "algorithms": ["m.olm.v1.curve25519-aes-sha2", "m.megolm.v1.aes-sha2"],
+        "device_id":  user_data["TEST_DEVICE_ID"],
+        "keys": {
+            f"curve25519:{user_data['TEST_DEVICE_ID']}": "F4uCNNlcbRvc7CfBz95ZGWBvY1ALniG1J8+6rhVoKS0",
+            f"ed25519:{user_data['TEST_DEVICE_ID']}": b64_public_key,
+        },
+        "signatures": {user_data['TEST_USER_ID']: {}},
+        "user_id": user_data["TEST_USER_ID"],
+    }
+
+    device_data["signatures"][user_data["TEST_USER_ID"]][f"ed25519:{user_data['TEST_DEVICE_ID']}"] = sign_json(
+        device_data, private_key
+    )
+
+    master_private_key = ed25519.Ed25519PrivateKey.from_private_bytes(
+        user_data["MASTER_CROSS_SIGNING_PRIVATE_KEY_BYTES"]
+    )
+    b64_master_public_key = encode_base64(
+        master_private_key.public_key().public_bytes(Encoding.Raw, PublicFormat.Raw)
+    )
+    b64_master_private_key = encode_base64(user_data["MASTER_CROSS_SIGNING_PRIVATE_KEY_BYTES"])
+
+    self_signing_private_key = ed25519.Ed25519PrivateKey.from_private_bytes(
+        user_data["SELF_CROSS_SIGNING_PRIVATE_KEY_BYTES"]
+    )
+    b64_self_signing_public_key = encode_base64(
+        self_signing_private_key.public_key().public_bytes(
+            Encoding.Raw, PublicFormat.Raw
+        )
+    )
+    b64_self_signing_private_key = encode_base64( user_data["SELF_CROSS_SIGNING_PRIVATE_KEY_BYTES"])
+
+    user_signing_private_key = ed25519.Ed25519PrivateKey.from_private_bytes(
+         user_data["USER_CROSS_SIGNING_PRIVATE_KEY_BYTES"]
+    )
+    b64_user_signing_public_key = encode_base64(
+        user_signing_private_key.public_key().public_bytes(
+            Encoding.Raw, PublicFormat.Raw
+        )
+    )
+    b64_user_signing_private_key = encode_base64(user_data["USER_CROSS_SIGNING_PRIVATE_KEY_BYTES"])
+
+    backup_decryption_key = x25519.X25519PrivateKey.from_private_bytes(
+        base64.b64decode(user_data["B64_BACKUP_DECRYPTION_KEY"])
+    )
+    b64_backup_public_key = encode_base64(
+        backup_decryption_key.public_key().public_bytes(Encoding.Raw, PublicFormat.Raw)
+    )
+
+    backup_data = {
+        "algorithm": "m.megolm_backup.v1.curve25519-aes-sha2",
+        "version": "1",
+        "auth_data": {
+            "public_key": b64_backup_public_key,
+        },
+    }
+    # sign with our device key
+    sig = sign_json(backup_data["auth_data"], private_key)
+    backup_data["auth_data"]["signatures"] = {
+        user_data["TEST_USER_ID"]: {f"ed25519:{user_data['TEST_DEVICE_ID']}": sig}
+    }
+
+    set_of_exported_room_keys = [build_exported_megolm_key(device_curve_key)[0], build_exported_megolm_key(device_curve_key)[0]]
+
+    additional_exported_room_key, additional_exported_ed_key = build_exported_megolm_key(device_curve_key)
+    ratcheted_exported_room_key = symetric_ratchet_step_of_megolm_key(additional_exported_room_key, additional_exported_ed_key)
+
+    otk_to_sign = {
+        "key": user_data['OTK']
+    }
+    # sign our public otk key with our device key
+    otk = sign_json(otk_to_sign, private_key)
+    otks = {
+        user_data["TEST_USER_ID"]: {
+            user_data['TEST_DEVICE_ID']: {
+                 "signed_curve25519:AAAAHQ": {
+                    "key": user_data["OTK"],
+                    "signatures": {
+                        user_data["TEST_USER_ID"]: {f"ed25519:{user_data['TEST_DEVICE_ID']}": otk}
+                    }
+                 }
+            }
+        }
+    }
+
+
+    backed_up_room_key = encrypt_megolm_key_for_backup(additional_exported_room_key, backup_decryption_key.public_key())
+
+    clear_event, encrypted_event = generate_encrypted_event_content(additional_exported_room_key, additional_exported_ed_key, device_curve_key)
+
+    backup_recovery_key = export_recovery_key(user_data["B64_BACKUP_DECRYPTION_KEY"])
+
+    return f"""\
+export const {prefix}TEST_USER_ID = "{user_data['TEST_USER_ID']}";
+export const {prefix}TEST_DEVICE_ID = "{user_data['TEST_DEVICE_ID']}";
+export const {prefix}TEST_ROOM_ID = "{user_data['TEST_ROOM_ID']}";
+
+/** The base64-encoded public ed25519 key for this device */
+export const {prefix}TEST_DEVICE_PUBLIC_ED25519_KEY_BASE64 = "{b64_public_key}";
+
+/** Signed device data, suitable for returning from a `/keys/query` call */
+export const {prefix}SIGNED_TEST_DEVICE_DATA: IDeviceKeys = {json.dumps(device_data, indent=4)};
+
+/** base64-encoded public master cross-signing key */
+export const {prefix}MASTER_CROSS_SIGNING_PUBLIC_KEY_BASE64 = "{b64_master_public_key}";
+
+/** base64-encoded private master cross-signing key */
+export const {prefix}MASTER_CROSS_SIGNING_PRIVATE_KEY_BASE64 = "{b64_master_private_key}";
+
+/** base64-encoded public self cross-signing key */
+export const {prefix}SELF_CROSS_SIGNING_PUBLIC_KEY_BASE64 = "{b64_self_signing_public_key}";
+
+/** base64-encoded private self signing cross-signing key */
+export const {prefix}SELF_CROSS_SIGNING_PRIVATE_KEY_BASE64 = "{b64_self_signing_private_key}";
+
+/** base64-encoded public user cross-signing key */
+export const {prefix}USER_CROSS_SIGNING_PUBLIC_KEY_BASE64 = "{b64_user_signing_public_key}";
+
+/** base64-encoded private user signing cross-signing key */
+export const {prefix}USER_CROSS_SIGNING_PRIVATE_KEY_BASE64 = "{b64_user_signing_private_key}";
+
+/** Signed cross-signing keys data, also suitable for returning from a `/keys/query` call */
+export const {prefix}SIGNED_CROSS_SIGNING_KEYS_DATA: Partial<IDownloadKeyResult> = {
+        json.dumps(build_cross_signing_keys_data(user_data), indent=4)
+};
+
+/** Signed OTKs, returned by `POST /keys/claim` */
+export const {prefix}ONE_TIME_KEYS = { json.dumps(otks, indent=4) };
+
+/** base64-encoded backup decryption (private) key */
+export const {prefix}BACKUP_DECRYPTION_KEY_BASE64 = "{ user_data['B64_BACKUP_DECRYPTION_KEY'] }";
+
+/** Backup decryption key in export format */
+export const {prefix}BACKUP_DECRYPTION_KEY_BASE58 = "{ backup_recovery_key }";
+
+/** Signed backup data, suitable for return from `GET /_matrix/client/v3/room_keys/keys/{{roomId}}/{{sessionId}}` */
+export const {prefix}SIGNED_BACKUP_DATA: KeyBackupInfo = { json.dumps(backup_data, indent=4) };
+
+/** A set of megolm keys that can be imported via CryptoAPI#importRoomKeys */
+export const {prefix}MEGOLM_SESSION_DATA_ARRAY: IMegolmSessionData[] = {
+    json.dumps(set_of_exported_room_keys, indent=4)
+};
+
+/** An exported megolm session */
+export const {prefix}MEGOLM_SESSION_DATA: IMegolmSessionData = {
+        json.dumps(additional_exported_room_key, indent=4)
+};
+
+/** A ratcheted version of {prefix}MEGOLM_SESSION_DATA */
+export const {prefix}RATCHTED_MEGOLM_SESSION_DATA: IMegolmSessionData = {
+        json.dumps(ratcheted_exported_room_key, indent=4)
+};
+
+/** The key from {prefix}MEGOLM_SESSION_DATA, encrypted for backup using `m.megolm_backup.v1.curve25519-aes-sha2` algorithm*/
+export const {prefix}CURVE25519_KEY_BACKUP_DATA: KeyBackupSession = {json.dumps(backed_up_room_key, indent=4)};
+
+/** A test clear event */
+export const {prefix}CLEAR_EVENT: Partial<IEvent> = {json.dumps(clear_event, indent=4)};
+
+/** The encrypted CLEAR_EVENT by MEGOLM_SESSION_DATA */
+export const {prefix}ENCRYPTED_EVENT: Partial<IEvent> = {json.dumps(encrypted_event, indent=4)};
+"""
+
+
+def build_cross_signing_keys_data(user_data) -> dict:
+    """Build the signed cross-signing-keys data for return from /keys/query"""
+    master_private_key = ed25519.Ed25519PrivateKey.from_private_bytes(
+        user_data["MASTER_CROSS_SIGNING_PRIVATE_KEY_BYTES"]
+    )
+    b64_master_public_key = encode_base64(
+        master_private_key.public_key().public_bytes(Encoding.Raw, PublicFormat.Raw)
+    )
+    self_signing_private_key = ed25519.Ed25519PrivateKey.from_private_bytes(
+         user_data["SELF_CROSS_SIGNING_PRIVATE_KEY_BYTES"]
+    )
+    b64_self_signing_public_key = encode_base64(
+        self_signing_private_key.public_key().public_bytes(
+            Encoding.Raw, PublicFormat.Raw
+        )
+    )
+    user_signing_private_key = ed25519.Ed25519PrivateKey.from_private_bytes(
+         user_data["USER_CROSS_SIGNING_PRIVATE_KEY_BYTES"]
+    )
+    b64_user_signing_public_key = encode_base64(
+        user_signing_private_key.public_key().public_bytes(
+            Encoding.Raw, PublicFormat.Raw
+        )
+    )
+    # create without signatures initially
+    cross_signing_keys_data = {
+        "master_keys": {
+             user_data["TEST_USER_ID"]: {
+                "keys": {
+                    f"ed25519:{b64_master_public_key}": b64_master_public_key,
+                },
+                "user_id": user_data["TEST_USER_ID"],
+                "usage": ["master"],
+            }
+        },
+        "self_signing_keys": {
+            user_data["TEST_USER_ID"]: {
+                "keys": {
+                    f"ed25519:{b64_self_signing_public_key}": b64_self_signing_public_key,
+                },
+                "user_id": user_data["TEST_USER_ID"],
+                "usage": ["self_signing"],
+            },
+        },
+        "user_signing_keys": {
+            user_data["TEST_USER_ID"]: {
+                "keys": {
+                    f"ed25519:{b64_user_signing_public_key}": b64_user_signing_public_key,
+                },
+                "user_id": user_data["TEST_USER_ID"],
+                "usage": ["user_signing"],
+            },
+        },
+    }
+    # sign the sub-keys with the master
+    for k in ["self_signing_keys", "user_signing_keys"]:
+        to_sign = cross_signing_keys_data[k][user_data["TEST_USER_ID"]]
+        sig = sign_json(to_sign, master_private_key)
+        to_sign["signatures"] = {
+            user_data["TEST_USER_ID"]: {f"ed25519:{b64_master_public_key}": sig}
+        }
+
+    return cross_signing_keys_data
+
+
+def encode_base64(input_bytes: bytes) -> str:
+    """Encode with unpadded base64"""
+    output_bytes = base64.b64encode(input_bytes)
+    output_string = output_bytes.decode("ascii")
+    return output_string.rstrip("=")
+
+
+def sign_json(json_object: dict, private_key: ed25519.Ed25519PrivateKey) -> str:
+    """
+    Sign the given json object
+
+    Returns the base64-encoded signature of signing `input` following the Matrix
+    JSON signature algorithm [1]
+
+    [1]: https://spec.matrix.org/v1.7/appendices/#signing-details
+    """
+    signatures = json_object.pop("signatures", {})
+    unsigned = json_object.pop("unsigned", None)
+
+    signature = private_key.sign(encode_canonical_json(json_object))
+    signature_base64 = encode_base64(signature)
+
+    json_object["signatures"] = signatures
+    if unsigned is not None:
+        json_object["unsigned"] = unsigned
+
+    return signature_base64
+
+def build_exported_megolm_key(device_curve_key: x25519.X25519PrivateKey) -> tuple[dict, ed25519.Ed25519PrivateKey]:
+    """
+    Creates an exported megolm room key, as per https://gitlab.matrix.org/matrix-org/olm/blob/master/docs/megolm.md#session-export-format
+    that can be imported via importRoomKeys API.
+    Returns the exported key, the matching privat edKey (needed to encrypt)
+    """
+    index = 0
+    private_key = ed25519.Ed25519PrivateKey.from_private_bytes(randbytes(32))
+    # Just use radom bytes for the ratchet parts
+    ratchet = randbytes(32 * 4)
+    # exported key, start with version byte
+    exported_key = bytearray(b'\x01')
+    exported_key += index.to_bytes(4, 'big')
+    exported_key += ratchet
+    # KPub
+    exported_key += private_key.public_key().public_bytes(Encoding.Raw, PublicFormat.Raw)
+
+
+    megolm_export = {
+        "algorithm": "m.megolm.v1.aes-sha2",
+        "room_id": "!room:id",
+        "sender_key": encode_base64(
+            device_curve_key.public_key().public_bytes(Encoding.Raw, PublicFormat.Raw)
+        ),
+        "session_id": encode_base64(
+            private_key.public_key().public_bytes(Encoding.Raw, PublicFormat.Raw)
+        ),
+        "session_key": encode_base64(exported_key),
+        "sender_claimed_keys": {
+            "ed25519": encode_base64(ed25519.Ed25519PrivateKey.from_private_bytes(randbytes(32)).public_key().public_bytes(Encoding.Raw, PublicFormat.Raw)),
+        },
+        "forwarding_curve25519_key_chain": [],
+    }
+
+    return megolm_export, private_key
+
+def symetric_ratchet_step_of_megolm_key(previous: dict , megolm_private_key: ed25519.Ed25519PrivateKey) -> dict:
+
+    """
+    Very simple ratchet step from 0 to 1
+    Used to generate a ratcheted key to test unknown message index.
+    """
+    session_key: str = previous["session_key"]
+
+    # Get the megolm R0 from the export format
+    decoded = base64.b64decode(session_key.encode("ascii"))
+    ri = decoded[5:133]
+
+    ri0 = ri[0:32]
+    ri1 = ri[32:64]
+    ri2 = ri[64:96]
+    ri3 = ri[96:128]
+
+    h = hmac.HMAC(ri3, hashes.SHA256())
+    h.update(b'x\03')
+    ri1_3 = h.finalize()
+
+    index = 1
+    private_key = megolm_private_key
+
+    # exported key, start with version byte
+    exported_key = bytearray(b'\x01')
+    exported_key += index.to_bytes(4, 'big')
+    exported_key += ri0
+    exported_key += ri1
+    exported_key += ri2
+    exported_key += ri1_3
+    # KPub
+    exported_key += private_key.public_key().public_bytes(Encoding.Raw, PublicFormat.Raw)
+
+
+    megolm_export = {
+        "algorithm": "m.megolm.v1.aes-sha2",
+        "room_id": "!room:id",
+        "sender_key": previous["sender_key"],
+        "session_id": previous["session_id"],
+        "session_key": encode_base64(exported_key),
+        "sender_claimed_keys": previous["sender_claimed_keys"],
+        "forwarding_curve25519_key_chain": [],
+    }
+
+    return megolm_export
+
+def encrypt_megolm_key_for_backup(session_data: dict, backup_public_key: x25519.X25519PublicKey) -> dict:
+
+    """
+    Encrypts an exported megolm key for key backup, using the m.megolm_backup.v1.curve25519-aes-sha2 algorithm.
+    """
+    data = encode_canonical_json(session_data)
+
+    # Generate an ephemeral curve25519 key, and perform an ECDH with the ephemeral key
+    # and the backup’s public key to generate a shared secret.
+    # The public half of the ephemeral key, encoded using unpadded base64,
+    # becomes the ephemeral property of the session_data.
+    ephemeral_keypair = x25519.X25519PrivateKey.from_private_bytes(randbytes(32))
+    shared_secret = ephemeral_keypair.exchange(backup_public_key)
+    ephemeral = encode_base64(ephemeral_keypair.public_key().public_bytes(Encoding.Raw, PublicFormat.Raw))
+
+    # Using the shared secret, generate 80 bytes by performing an HKDF using SHA-256 as the hash,
+    # with a salt of 32 bytes of 0, and with the empty string as the info.
+    # The first 32 bytes are used as the AES key, the next 32 bytes are used as the MAC key,
+    #  and the last 16 bytes are used as the AES initialization vector.
+    salt = bytes(32)
+    info = b""
+
+    hkdf = HKDF(
+        algorithm=hashes.SHA256(),
+        length=80,
+        salt=salt,
+        info=info,
+    )
+
+    raw_key = hkdf.derive(shared_secret)
+    aes_key = raw_key[:32]
+    mac = raw_key[32:64]
+    iv = raw_key[64:80]
+
+    # Stringify the JSON object, and encrypt it using AES-CBC-256 with PKCS#7 padding.
+    # This encrypted data, encoded using unpadded base64, becomes the ciphertext property of the session_data.
+    cipher = Cipher(algorithms.AES(aes_key), modes.CBC(iv))
+    encryptor = cipher.encryptor()
+    padder = padding.PKCS7(128).padder()
+    padded_data = padder.update(data) + padder.finalize()
+    ct = encryptor.update(padded_data) + encryptor.finalize()
+    cipher_text = encode_base64(ct)
+
+    # Pass the raw encrypted data (prior to base64 encoding) through HMAC-SHA-256 using the MAC key generated above.
+    # The first 8 bytes of the resulting MAC are base64-encoded, and become the mac property of the session_data.
+    h = hmac.HMAC(mac, hashes.SHA256())
+    # h.update(ct)
+    signature = h.finalize()
+    mac = encode_base64(signature[:8])
+
+    encrypted_key = {
+        "first_message_index": 1,
+        "forwarded_count": 0,
+        "is_verified": False,
+        "session_data": {
+            "ciphertext": cipher_text,
+            "ephemeral": ephemeral,
+            "mac": mac
+        }
+
+    }
+
+    return encrypted_key
+
+def generate_encrypted_event_content(exported_key: dict, ed_key: ed25519.Ed25519PrivateKey, curve_key: x25519.X25519PrivateKey) -> tuple[dict, dict]:
+    """
+        Encrypts an event using the given key in session export format.
+        Will not do any ratcheting, just encrypt at index 0.
+    """
+
+    clear_event = {
+        "type": "m.room.message",
+        "room_id": "!room:id",
+        "sender": "@alice:localhost",
+        "content": {
+            "msgtype": "m.text",
+            "body": "Hello world"
+        }
+    }
+
+    session_key: str = exported_key["session_key"]
+
+    # Get the megolm R0 from the export format
+    decoded = base64.b64decode(session_key.encode("ascii"))
+    r0 = decoded[5:133]
+
+    hkdf = HKDF(
+        algorithm=hashes.SHA256(),
+        length=80,
+        salt=bytes(32),
+        info=b"MEGOLM_KEYS",
+    )
+
+    raw_key = hkdf.derive(r0)
+    aes_key = raw_key[:32]
+    mac = raw_key[32:64]
+    aes_iv = raw_key[64:80]
+
+    payload_json = {
+        "room_id": clear_event["room_id"],
+        "type": clear_event["type"],
+        "content": clear_event["content"]
+    }
+
+    payload_string = encode_canonical_json(payload_json)
+
+    cipher = Cipher(algorithms.AES(aes_key), modes.CBC(aes_iv))
+    encryptor = cipher.encryptor()
+    padder = padding.PKCS7(128).padder()
+
+    padded_data = padder.update(payload_string)
+    padded_data += padder.finalize()
+
+    ct = encryptor.update(padded_data) + encryptor.finalize()
+
+    # The ratchet index i, and the cipher-text, are then packed
+    # into a message as described in Message format. Then the entire message
+    # (including the version bytes and all payload bytes) are passed through
+    # HMAC-SHA-256. The first 8 bytes of the MAC are appended to the message.
+    message = bytearray()
+    message += b'\x03'
+    # int tag for index
+    message += b'\x08'
+    # index is 0
+    message += b'\x00'
+    message += b'\x12'
+    # probably works only for short messages
+    message += len(ct).to_bytes(1, 'big')
+    # encrypted data
+    message += ct
+
+    h = hmac.HMAC(mac, hashes.SHA256())
+    h.update(message)
+    signature = h.finalize()
+    mac = signature[:8]
+
+    message += mac
+
+    # Finally, the authenticated message is signed using the Ed25519 keypair;
+    # the 64 byte signature is appended to the message
+    signature = ed_key.sign(bytes(message))
+
+    message += signature
+
+    cipher_text = encode_base64(message)
+
+    encrypted_payload = {
+        "algorithm" : "m.megolm.v1.aes-sha2",
+        "sender_key" : encode_base64(curve_key.public_key().public_bytes(Encoding.Raw, PublicFormat.Raw)),
+        "ciphertext" : cipher_text,
+        "session_id" : exported_key["session_id"],
+        "device_id" : "TEST_DEVICE"
+    }
+
+    encrypted_event = {
+        "type": "m.room.encrypted",
+        "room_id": "!room:id",
+        "sender": "@alice:localhost",
+        "content": encrypted_payload,
+        "event_id": "$event1",
+        "origin_server_ts": 1507753886000,
+    }
+
+    return clear_event, encrypted_event
+
+
+def export_recovery_key(key_b64: str) -> str:
+    """
+        Export a private recovery key as a recovery key that can be presented to users.
+        As per spec https://spec.matrix.org/v1.8/client-server-api/#recovery-key
+    """
+    private_key_bytes = base64.b64decode(key_b64)
+
+    # The 256-bit curve25519 private key is prepended by the bytes 0x8B and 0x01
+    export_bytes = bytearray()
+    export_bytes += b'\x8b'
+    export_bytes += b'\x01'
+
+    export_bytes += private_key_bytes
+
+    # All the bytes in the string above, including the two header bytes,
+    # are XORed together to form a parity byte. This parity byte is appended to the byte string.
+    parity_byte = 0 #b'\x8b' ^ b'\x01'
+    [parity_byte := parity_byte ^ x for x in export_bytes]
+
+    export_bytes += parity_byte.to_bytes(1, 'big')
+
+    # The byte string is encoded using base58
+    recovery_key = base58.b58encode(export_bytes).decode('utf-8')
+
+    split = [recovery_key[i:i + 4] for i in range(0, len(recovery_key), 4)]
+    return ' '.join(split)
+
+
+if __name__ == "__main__":
+    main()
@@ -0,0 +1,451 @@
+/* Test data for cryptography tests
+ *
+ * Do not edit by hand! This file is generated by `./generate-test-data.py`
+ */
+
+import { IDeviceKeys, IMegolmSessionData } from "../../../src/@types/crypto";
+import { IDownloadKeyResult, IEvent } from "../../../src";
+import { KeyBackupSession, KeyBackupInfo } from "../../../src/crypto-api/keybackup";
+
+/* eslint-disable comma-dangle */
+
+// Alice data
+
+export const TEST_USER_ID = "@alice:localhost";
+export const TEST_DEVICE_ID = "test_device";
+export const TEST_ROOM_ID = "!room:id";
+
+/** The base64-encoded public ed25519 key for this device */
+export const TEST_DEVICE_PUBLIC_ED25519_KEY_BASE64 = "YI/7vbGVLpGdYtuceQR8MSsKB/QjgfMXM1xqnn+0NWU";
+
+/** Signed device data, suitable for returning from a `/keys/query` call */
+export const SIGNED_TEST_DEVICE_DATA: IDeviceKeys = {
+    "algorithms": [
+        "m.olm.v1.curve25519-aes-sha2",
+        "m.megolm.v1.aes-sha2"
+    ],
+    "device_id": "test_device",
+    "keys": {
+        "curve25519:test_device": "F4uCNNlcbRvc7CfBz95ZGWBvY1ALniG1J8+6rhVoKS0",
+        "ed25519:test_device": "YI/7vbGVLpGdYtuceQR8MSsKB/QjgfMXM1xqnn+0NWU"
+    },
+    "user_id": "@alice:localhost",
+    "signatures": {
+        "@alice:localhost": {
+            "ed25519:test_device": "LmQC/yAUZJmkxZ+3L0nEwvtVWOzjqQqADWBhk+C47SPaFYHeV+E291mgXaSCJVeGltX+HC49Aw7nb6ga7sw0Aw"
+        }
+    }
+};
+
+/** base64-encoded public master cross-signing key */
+export const MASTER_CROSS_SIGNING_PUBLIC_KEY_BASE64 = "J+5An10v1vzZpAXTYFokD1/PEVccFnLC61EfRXit0UY";
+
+/** base64-encoded private master cross-signing key */
+export const MASTER_CROSS_SIGNING_PRIVATE_KEY_BASE64 = "ZG95b3VzcGVha3doYWFhYWFhYWFhYWFhYWFhYWFhbGU";
+
+/** base64-encoded public self cross-signing key */
+export const SELF_CROSS_SIGNING_PUBLIC_KEY_BASE64 = "aU2+2CyXQTCuDcmWW0EL2bhJ6PdjFW2LbAsbHqf02AY";
+
+/** base64-encoded private self signing cross-signing key */
+export const SELF_CROSS_SIGNING_PRIVATE_KEY_BASE64 = "c2VsZnNlbGZzZWxmc2VsZnNlbGZzZWxmc2VsZnNlbGY";
+
+/** base64-encoded public user cross-signing key */
+export const USER_CROSS_SIGNING_PUBLIC_KEY_BASE64 = "g5TC/zjQXyZYuDLZv7a41z5fFVrXpYPypG//AFQj8hY";
+
+/** base64-encoded private user signing cross-signing key */
+export const USER_CROSS_SIGNING_PRIVATE_KEY_BASE64 = "dXNlcnVzZXJ1c2VydXNlcnVzZXJ1c2VydXNlcnVzZXI";
+
+/** Signed cross-signing keys data, also suitable for returning from a `/keys/query` call */
+export const SIGNED_CROSS_SIGNING_KEYS_DATA: Partial<IDownloadKeyResult> = {
+    "master_keys": {
+        "@alice:localhost": {
+            "keys": {
+                "ed25519:J+5An10v1vzZpAXTYFokD1/PEVccFnLC61EfRXit0UY": "J+5An10v1vzZpAXTYFokD1/PEVccFnLC61EfRXit0UY"
+            },
+            "user_id": "@alice:localhost",
+            "usage": [
+                "master"
+            ]
+        }
+    },
+    "self_signing_keys": {
+        "@alice:localhost": {
+            "keys": {
+                "ed25519:aU2+2CyXQTCuDcmWW0EL2bhJ6PdjFW2LbAsbHqf02AY": "aU2+2CyXQTCuDcmWW0EL2bhJ6PdjFW2LbAsbHqf02AY"
+            },
+            "user_id": "@alice:localhost",
+            "usage": [
+                "self_signing"
+            ],
+            "signatures": {
+                "@alice:localhost": {
+                    "ed25519:J+5An10v1vzZpAXTYFokD1/PEVccFnLC61EfRXit0UY": "XfhYEhZmOs8BJdb3viatILBZ/bElsHXEW28V4tIaY5CxrBR0YOym3yZHWmRmypXessHZAKOhZn3yBMXzdajyCw"
+                }
+            }
+        }
+    },
+    "user_signing_keys": {
+        "@alice:localhost": {
+            "keys": {
+                "ed25519:g5TC/zjQXyZYuDLZv7a41z5fFVrXpYPypG//AFQj8hY": "g5TC/zjQXyZYuDLZv7a41z5fFVrXpYPypG//AFQj8hY"
+            },
+            "user_id": "@alice:localhost",
+            "usage": [
+                "user_signing"
+            ],
+            "signatures": {
+                "@alice:localhost": {
+                    "ed25519:J+5An10v1vzZpAXTYFokD1/PEVccFnLC61EfRXit0UY": "6AkD1XM2H0/ebgP9oBdMKNeft7uxsrb0XN1CsjjHgeZCvCTMmv3BHlLiT/Hzy4fe8H+S1tr484dcXN/PIdnfDA"
+                }
+            }
+        }
+    }
+};
+
+/** Signed OTKs, returned by `POST /keys/claim` */
+export const ONE_TIME_KEYS = {
+    "@alice:localhost": {
+        "test_device": {
+            "signed_curve25519:AAAAHQ": {
+                "key": "j3fR3HemM16M7CWhoI4Sk5ZsdmdfQHsKL1xuSft6MSw",
+                "signatures": {
+                    "@alice:localhost": {
+                        "ed25519:test_device": "25djC6Rk6gIgFBMVawY9X9LnY8XMMziey6lKqL8Q5Bbp7T1vw9uk0RE7eKO2a/jNLcYroO2xRztGhBrKz5sOCQ"
+                    }
+                }
+            }
+        }
+    }
+};
+
+/** base64-encoded backup decryption (private) key */
+export const BACKUP_DECRYPTION_KEY_BASE64 = "dwdtCnMYpX08FsFyUbJmRd9ML4frwJkqsXf7pR25LCo=";
+
+/** Backup decryption key in export format */
+export const BACKUP_DECRYPTION_KEY_BASE58 = "EsTc LW2K PGiF wKEA 3As5 g5c4 BXwk qeeJ ZJV8 Q9fu gUMN UE4d";
+
+/** Signed backup data, suitable for return from `GET /_matrix/client/v3/room_keys/keys/{roomId}/{sessionId}` */
+export const SIGNED_BACKUP_DATA: KeyBackupInfo = {
+    "algorithm": "m.megolm_backup.v1.curve25519-aes-sha2",
+    "version": "1",
+    "auth_data": {
+        "public_key": "hSDwCYkwp1R0i33ctD73Wg2/Og0mOBr066SpjqqbTmo",
+        "signatures": {
+            "@alice:localhost": {
+                "ed25519:test_device": "KDSNeumirTsd8piI0oVfv/wzg4J4HlEc7rs5XhODFcJ/YAcUdg65ajsZG+rLI0TQOSSGjorJqcrSiSB1HRSCAA"
+            }
+        }
+    }
+};
+
+/** A set of megolm keys that can be imported via CryptoAPI#importRoomKeys */
+export const MEGOLM_SESSION_DATA_ARRAY: IMegolmSessionData[] = [
+    {
+        "algorithm": "m.megolm.v1.aes-sha2",
+        "room_id": "!room:id",
+        "sender_key": "WimPd2udAU/1S/+YBpPbmr9L+0H5H+BnAVHSwDxlPGc",
+        "session_id": "FYOoKQSwe4d9jhTZ/LQCZFJINjPEqZ7Or4Z08reP92M",
+        "session_key": "AQAAAABZ0jXQOprFfXe41tIFmAtHxflJp4O2hM/vzQQpOazOCFeWSoW5P3Z9Q+voU3eXehMwyP8/hm/Q8xLP6/PmJdy+71se/17kdFwcDGgLxBWfa4ODM9zlI4EjKbNqmiii5loJ7rBhA/XXaw80m0hfU6zTDX/KrO55J0Pt4vJ0LDa3LBWDqCkEsHuHfY4U2fy0AmRSSDYzxKmezq+GdPK3j/dj",
+        "sender_claimed_keys": {
+            "ed25519": "QdgHgdpDgihgovpPzUiThXur1fbErTFh7paFvNKSgN0"
+        },
+        "forwarding_curve25519_key_chain": []
+    },
+    {
+        "algorithm": "m.megolm.v1.aes-sha2",
+        "room_id": "!room:id",
+        "sender_key": "WimPd2udAU/1S/+YBpPbmr9L+0H5H+BnAVHSwDxlPGc",
+        "session_id": "mPYSGA2l1tOQiipEDEVYhDSdTSFh2lDW1qpGKYZRxTc",
+        "session_key": "AQAAAAAHwgkB49BTPAEGTCK6degxUIbl8GPG2ugPRYhNtOpNic63u11+baXFfjDw5fmVfD1gJXpQQjGsqrIYioxrB1xzl7mfb942UHhYdaMQZowpp1fSpJVsxR5TddUU2EWifYD9EQsoz8mY1zqoazm4vUP4v9yxaTcUBj2c6HMJCY0gCJj2EhgNpdbTkIoqRAxFWIQ0nU0hYdpQ1taqRimGUcU3",
+        "sender_claimed_keys": {
+            "ed25519": "IrkbT6H+0urDf6wKDSyVC1fh1t84Vz6T62snni86Cog"
+        },
+        "forwarding_curve25519_key_chain": []
+    }
+];
+
+/** An exported megolm session */
+export const MEGOLM_SESSION_DATA: IMegolmSessionData = {
+    "algorithm": "m.megolm.v1.aes-sha2",
+    "room_id": "!room:id",
+    "sender_key": "WimPd2udAU/1S/+YBpPbmr9L+0H5H+BnAVHSwDxlPGc",
+    "session_id": "ipdI6Zs/7DzFTEhiA2iGaMDfHkIYCleqXT6L+5e1/co",
+    "session_key": "AQAAAABXGO+Z9jlQJhIL6ByhXrv2BwCIxkhh7MXpKLsYmXkJcWrQlirmXmD79ga1zo+I4DCtEZzyGSpDWXBC6G7ez3H4gDMBam1RE3Jm5tc+oTlIri32UkYgSL0kBkcEnttqmIXBlK8tAfJo3cJnlh7F4ltEOAqrdME6dU0zXTkqXmURqYqXSOmbP+w8xUxIYgNohmjA3x5CGApXql0+i/uXtf3K",
+    "sender_claimed_keys": {
+        "ed25519": "Bhbpt6hqMZlSH4sJV7xiEEEiPVeTWz4Vkujl1EMdIPI"
+    },
+    "forwarding_curve25519_key_chain": []
+};
+
+/** A ratcheted version of MEGOLM_SESSION_DATA */
+export const RATCHTED_MEGOLM_SESSION_DATA: IMegolmSessionData = {
+    "algorithm": "m.megolm.v1.aes-sha2",
+    "room_id": "!room:id",
+    "sender_key": "WimPd2udAU/1S/+YBpPbmr9L+0H5H+BnAVHSwDxlPGc",
+    "session_id": "ipdI6Zs/7DzFTEhiA2iGaMDfHkIYCleqXT6L+5e1/co",
+    "session_key": "AQAAAAFXGO+Z9jlQJhIL6ByhXrv2BwCIxkhh7MXpKLsYmXkJcWrQlirmXmD79ga1zo+I4DCtEZzyGSpDWXBC6G7ez3H4gDMBam1RE3Jm5tc+oTlIri32UkYgSL0kBkcEnttqmIUWvpwC7by/yg231+gyzu9lDHAU4ivCj48pt7WGiORWmIqXSOmbP+w8xUxIYgNohmjA3x5CGApXql0+i/uXtf3K",
+    "sender_claimed_keys": {
+        "ed25519": "Bhbpt6hqMZlSH4sJV7xiEEEiPVeTWz4Vkujl1EMdIPI"
+    },
+    "forwarding_curve25519_key_chain": []
+};
+
+/** The key from MEGOLM_SESSION_DATA, encrypted for backup using `m.megolm_backup.v1.curve25519-aes-sha2` algorithm*/
+export const CURVE25519_KEY_BACKUP_DATA: KeyBackupSession = {
+    "first_message_index": 1,
+    "forwarded_count": 0,
+    "is_verified": false,
+    "session_data": {
+        "ciphertext": "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",
+        "ephemeral": "q+P1WdRtEiPIEtNuuGrRcueZxUbLnSKdsuTAkxewXgU",
+        "mac": "OibmACbORhI"
+    }
+};
+
+/** A test clear event */
+export const CLEAR_EVENT: Partial<IEvent> = {
+    "type": "m.room.message",
+    "room_id": "!room:id",
+    "sender": "@alice:localhost",
+    "content": {
+        "msgtype": "m.text",
+        "body": "Hello world"
+    }
+};
+
+/** The encrypted CLEAR_EVENT by MEGOLM_SESSION_DATA */
+export const ENCRYPTED_EVENT: Partial<IEvent> = {
+    "type": "m.room.encrypted",
+    "room_id": "!room:id",
+    "sender": "@alice:localhost",
+    "content": {
+        "algorithm": "m.megolm.v1.aes-sha2",
+        "sender_key": "WimPd2udAU/1S/+YBpPbmr9L+0H5H+BnAVHSwDxlPGc",
+        "ciphertext": "AwgAEnAkBmciEAyhh1j6DCk29UXJ7kv/kvayUNfuNT0iAioLxcXjFXOZ5ho3jF1/wrytlt0Lb298uMM67OxdVMi+/mMfYpwlvi07P9cIH6CMSj8tyhYoWl0SrKY6tkPf5GWOlRSRRKbziXa96FHXvnA3V2FCAIGtAe3G4ei5RPbhkmKAFBLAen33/D6MjJVqU8Ojr5vTkgls5eyirarlVpsmnH06alDaxO8avrU0NL+Vsw26xvlUQgEMOnUJ",
+        "session_id": "ipdI6Zs/7DzFTEhiA2iGaMDfHkIYCleqXT6L+5e1/co",
+        "device_id": "TEST_DEVICE"
+    },
+    "event_id": "$event1",
+    "origin_server_ts": 1507753886000
+};
+
+// Bob data
+
+export const BOB_TEST_USER_ID = "@bob:xyz";
+export const BOB_TEST_DEVICE_ID = "bob_device";
+export const BOB_TEST_ROOM_ID = "!room:id";
+
+/** The base64-encoded public ed25519 key for this device */
+export const BOB_TEST_DEVICE_PUBLIC_ED25519_KEY_BASE64 = "jmY0h8QS6Te6gxyjOmMc0eKOqmbAtXpVo4CCWFubk50";
+
+/** Signed device data, suitable for returning from a `/keys/query` call */
+export const BOB_SIGNED_TEST_DEVICE_DATA: IDeviceKeys = {
+    "algorithms": [
+        "m.olm.v1.curve25519-aes-sha2",
+        "m.megolm.v1.aes-sha2"
+    ],
+    "device_id": "bob_device",
+    "keys": {
+        "curve25519:bob_device": "F4uCNNlcbRvc7CfBz95ZGWBvY1ALniG1J8+6rhVoKS0",
+        "ed25519:bob_device": "jmY0h8QS6Te6gxyjOmMc0eKOqmbAtXpVo4CCWFubk50"
+    },
+    "user_id": "@bob:xyz",
+    "signatures": {
+        "@bob:xyz": {
+            "ed25519:bob_device": "4ApBs9jaeGyfdYaWRUdBvQAkDyXjACJ9KJ0xLHMgiFT/1yo6VqPTx2iziKGnrBiGhbtKNxEhDPOvZZkBU73cDQ"
+        }
+    }
+};
+
+/** base64-encoded public master cross-signing key */
+export const BOB_MASTER_CROSS_SIGNING_PUBLIC_KEY_BASE64 = "KKVOHOB2LsW7hFJwqyzXpA+vp7u5+gaMWUJvBS7mjuA";
+
+/** base64-encoded private master cross-signing key */
+export const BOB_MASTER_CROSS_SIGNING_PRIVATE_KEY_BASE64 = "RG95b3VzcGVha3doYWFhYWFhYWFhYWFhYWFhYWFhbGU";
+
+/** base64-encoded public self cross-signing key */
+export const BOB_SELF_CROSS_SIGNING_PUBLIC_KEY_BASE64 = "DaScI3WulBvDjf/d2vdyP5Cgjdypn1c/PSDX23MgN+A";
+
+/** base64-encoded private self signing cross-signing key */
+export const BOB_SELF_CROSS_SIGNING_PRIVATE_KEY_BASE64 = "U2VsZnNlbGZzZWxmc2VsZnNlbGZzZWxmc2VsZnNlbGY";
+
+/** base64-encoded public user cross-signing key */
+export const BOB_USER_CROSS_SIGNING_PUBLIC_KEY_BASE64 = "lXP89FP6zvFH9TSbU1S8uSdAsVawm1NmV6z+Rfr3lEw";
+
+/** base64-encoded private user signing cross-signing key */
+export const BOB_USER_CROSS_SIGNING_PRIVATE_KEY_BASE64 = "VXNlcnVzZXJ1c2VydXNlcnVzZXJ1c2VydXNlcnVzZXI";
+
+/** Signed cross-signing keys data, also suitable for returning from a `/keys/query` call */
+export const BOB_SIGNED_CROSS_SIGNING_KEYS_DATA: Partial<IDownloadKeyResult> = {
+    "master_keys": {
+        "@bob:xyz": {
+            "keys": {
+                "ed25519:KKVOHOB2LsW7hFJwqyzXpA+vp7u5+gaMWUJvBS7mjuA": "KKVOHOB2LsW7hFJwqyzXpA+vp7u5+gaMWUJvBS7mjuA"
+            },
+            "user_id": "@bob:xyz",
+            "usage": [
+                "master"
+            ]
+        }
+    },
+    "self_signing_keys": {
+        "@bob:xyz": {
+            "keys": {
+                "ed25519:DaScI3WulBvDjf/d2vdyP5Cgjdypn1c/PSDX23MgN+A": "DaScI3WulBvDjf/d2vdyP5Cgjdypn1c/PSDX23MgN+A"
+            },
+            "user_id": "@bob:xyz",
+            "usage": [
+                "self_signing"
+            ],
+            "signatures": {
+                "@bob:xyz": {
+                    "ed25519:KKVOHOB2LsW7hFJwqyzXpA+vp7u5+gaMWUJvBS7mjuA": "RxM8iJU6ZkyzQSVtNnXIJMPyEahVsN+fQQTBNKAs+kqySFyXBgchx+8czZaAhJCpXh9gD1nskT4yyFd2eyUXBw"
+                }
+            }
+        }
+    },
+    "user_signing_keys": {
+        "@bob:xyz": {
+            "keys": {
+                "ed25519:lXP89FP6zvFH9TSbU1S8uSdAsVawm1NmV6z+Rfr3lEw": "lXP89FP6zvFH9TSbU1S8uSdAsVawm1NmV6z+Rfr3lEw"
+            },
+            "user_id": "@bob:xyz",
+            "usage": [
+                "user_signing"
+            ],
+            "signatures": {
+                "@bob:xyz": {
+                    "ed25519:KKVOHOB2LsW7hFJwqyzXpA+vp7u5+gaMWUJvBS7mjuA": "jF8fvnPZulrPyh/4E8dNDVBP3iHHl9bRc+rRArVyGzoom+uVrokOck7BN2YmPyCRFZJJx7fgRA1Bveyu+mTVAg"
+                }
+            }
+        }
+    }
+};
+
+/** Signed OTKs, returned by `POST /keys/claim` */
+export const BOB_ONE_TIME_KEYS = {
+    "@bob:xyz": {
+        "bob_device": {
+            "signed_curve25519:AAAAHQ": {
+                "key": "j3fR3HemM16M7CWhoI4Sk5ZsdmdfQHsKL1xuSft6MSw",
+                "signatures": {
+                    "@bob:xyz": {
+                        "ed25519:bob_device": "dlZc9VA/hP980Mxvu9qwi0qJx8VK7sADGOM48CE01YM7K/Mbty9lis/QjtQAWqDg371QyynVRjEzt9qj7eSFCg"
+                    }
+                }
+            }
+        }
+    }
+};
+
+/** base64-encoded backup decryption (private) key */
+export const BOB_BACKUP_DECRYPTION_KEY_BASE64 = "DwdtCnMYpX08FsFyUbJmRd9ML4frwJkqsXf7pR25LCo=";
+
+/** Backup decryption key in export format */
+export const BOB_BACKUP_DECRYPTION_KEY_BASE58 = "EsT5 Sd5m mEXs NQYE ibRe 3q9E 4aXW rHih 5f9J 6rU6 AfwY mASR";
+
+/** Signed backup data, suitable for return from `GET /_matrix/client/v3/room_keys/keys/{roomId}/{sessionId}` */
+export const BOB_SIGNED_BACKUP_DATA: KeyBackupInfo = {
+    "algorithm": "m.megolm_backup.v1.curve25519-aes-sha2",
+    "version": "1",
+    "auth_data": {
+        "public_key": "ZRuVWcWlDuvOwZRygccUCD4Avtnt130800I+WQNwwRY",
+        "signatures": {
+            "@bob:xyz": {
+                "ed25519:bob_device": "lDIMj3VC0WazE2FamGHpmbiqKf9Z4pO4qapZ5TL5BnD3c+dvb+2waOEd6pgay/pmrQ6MW4Eu2KDEpe1fnHc3BA"
+            }
+        }
+    }
+};
+
+/** A set of megolm keys that can be imported via CryptoAPI#importRoomKeys */
+export const BOB_MEGOLM_SESSION_DATA_ARRAY: IMegolmSessionData[] = [
+    {
+        "algorithm": "m.megolm.v1.aes-sha2",
+        "room_id": "!room:id",
+        "sender_key": "FOvlmz18LLI3k/llCpqRoKT90+gFF8YhuL+v1YBXHlw",
+        "session_id": "/2K+V777vipCxPZ0gpY9qcpz1DYaXwuMRIu0UEP0Wa0",
+        "session_key": "AQAAAAAclzWVMeWBKH+B/WMowa3rb4ma3jEl6n5W4GCs9ue65CruzD3ihX+85pZ9hsV9Bf6fvhjp76WNRajoJYX0UIt7aosjmu0i+H+07hEQ0zqTKpVoSH0ykJ6stAMhdr6Q4uW5crBmdTTBIsqmoWsNJZKKoE2+ldYrZ1lrFeaJbjBIY/9ivle++74qQsT2dIKWPanKc9Q2Gl8LjESLtFBD9Fmt",
+        "sender_claimed_keys": {
+            "ed25519": "F4P7f1Z0RjbiZMgHk1xBCG3KC4/Ng9PmxLJ4hQ13sHA"
+        },
+        "forwarding_curve25519_key_chain": []
+    },
+    {
+        "algorithm": "m.megolm.v1.aes-sha2",
+        "room_id": "!room:id",
+        "sender_key": "FOvlmz18LLI3k/llCpqRoKT90+gFF8YhuL+v1YBXHlw",
+        "session_id": "+07YOpSgdZ1X9le3n3NMByw0V1B0H0Djnbm76jgmWoo",
+        "session_key": "AQAAAAAjWfIMo9+BWS8IvhfsQuomxXXXGy11tJs0ej505xxd1RzOIP4ftq3MbZYsfH8kqSMBc2l1Ym2u3Dksv2/nR0zGQeNIgOxeMuwHU3Ry7+DdV1I96blPylVCCn/f5RAy6smKoaeylptPdXgVXmw3YBBUVYpHpm+xCIUUp9foAdb8hftO2DqUoHWdV/ZXt59zTAcsNFdQdB9A4525u+o4JlqK",
+        "sender_claimed_keys": {
+            "ed25519": "OsZMdC1gQ5nPr+L9tuT6xXsaFJkVPkgxP2FexHF1/QM"
+        },
+        "forwarding_curve25519_key_chain": []
+    }
+];
+
+/** An exported megolm session */
+export const BOB_MEGOLM_SESSION_DATA: IMegolmSessionData = {
+    "algorithm": "m.megolm.v1.aes-sha2",
+    "room_id": "!room:id",
+    "sender_key": "FOvlmz18LLI3k/llCpqRoKT90+gFF8YhuL+v1YBXHlw",
+    "session_id": "gywydBrIJcJWktC/ic3tunKZM1XZm1MpYiYtdbj8Rpc",
+    "session_key": "AQAAAADZJL7OdM/KHfPzXPZ3CtlLBIlzbwk06dnZTd3bvkcdP5u73rdmThBKdqGA4xzCyxZsHdYLZRrlmD3VwOmNfvWMqYdPxA1X0vs3d172y9EIG8i+N/skJxTRypcVSV9XoinBNIWr/gkyepuAKiQqemlc8J5amD9OkmbVkmnrxP1uyYMsMnQayCXCVpLQv4nN7bpymTNV2ZtTKWImLXW4/EaX",
+    "sender_claimed_keys": {
+        "ed25519": "zBdpQwWYyz1MkZuEUhXqcdMfUNN/B9psLFDDDTJOg64"
+    },
+    "forwarding_curve25519_key_chain": []
+};
+
+/** A ratcheted version of BOB_MEGOLM_SESSION_DATA */
+export const BOB_RATCHTED_MEGOLM_SESSION_DATA: IMegolmSessionData = {
+    "algorithm": "m.megolm.v1.aes-sha2",
+    "room_id": "!room:id",
+    "sender_key": "FOvlmz18LLI3k/llCpqRoKT90+gFF8YhuL+v1YBXHlw",
+    "session_id": "gywydBrIJcJWktC/ic3tunKZM1XZm1MpYiYtdbj8Rpc",
+    "session_key": "AQAAAAHZJL7OdM/KHfPzXPZ3CtlLBIlzbwk06dnZTd3bvkcdP5u73rdmThBKdqGA4xzCyxZsHdYLZRrlmD3VwOmNfvWMqYdPxA1X0vs3d172y9EIG8i+N/skJxTRypcVSV9Xoil2JdGx9oPqR0dFVh661Aqs86rJRbQ4IeRiuEm35VMxboMsMnQayCXCVpLQv4nN7bpymTNV2ZtTKWImLXW4/EaX",
+    "sender_claimed_keys": {
+        "ed25519": "zBdpQwWYyz1MkZuEUhXqcdMfUNN/B9psLFDDDTJOg64"
+    },
+    "forwarding_curve25519_key_chain": []
+};
+
+/** The key from BOB_MEGOLM_SESSION_DATA, encrypted for backup using `m.megolm_backup.v1.curve25519-aes-sha2` algorithm*/
+export const BOB_CURVE25519_KEY_BACKUP_DATA: KeyBackupSession = {
+    "first_message_index": 1,
+    "forwarded_count": 0,
+    "is_verified": false,
+    "session_data": {
+        "ciphertext": "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",
+        "ephemeral": "oO0VX84OUIzm2i/12zAhTWOZT5IFRH5mXaKZ8fXkCgU",
+        "mac": "lEfHlqfJQwU"
+    }
+};
+
+/** A test clear event */
+export const BOB_CLEAR_EVENT: Partial<IEvent> = {
+    "type": "m.room.message",
+    "room_id": "!room:id",
+    "sender": "@alice:localhost",
+    "content": {
+        "msgtype": "m.text",
+        "body": "Hello world"
+    }
+};
+
+/** The encrypted CLEAR_EVENT by MEGOLM_SESSION_DATA */
+export const BOB_ENCRYPTED_EVENT: Partial<IEvent> = {
+    "type": "m.room.encrypted",
+    "room_id": "!room:id",
+    "sender": "@alice:localhost",
+    "content": {
+        "algorithm": "m.megolm.v1.aes-sha2",
+        "sender_key": "FOvlmz18LLI3k/llCpqRoKT90+gFF8YhuL+v1YBXHlw",
+        "ciphertext": "AwgAEnA/mEqZm2lSrhoG11OpDqsohGSBJWsudbuoItLlivmpFZQHrKMbE6z/dhCTwUi76vwfRCtf4tyPMD845cqZH1nL0bowq3/awyzZ8Q263Y3WrLfkUTFBU6oPF/IULUFZZuw6kLdfd5g5+uigvqUhFFpICoj7KNHznv4sFNssd00/WgJquZ6PRt6e1v6ANFNiZPAwghIL+kBc6pb8i6MUWt9JnXilJhTqFDHdXiY4qkaKBWbwebC26PYM",
+        "session_id": "gywydBrIJcJWktC/ic3tunKZM1XZm1MpYiYtdbj8Rpc",
+        "device_id": "TEST_DEVICE"
+    },
+    "event_id": "$event1",
+    "origin_server_ts": 1507753886000
+};
+
@@ -6,9 +6,19 @@ import "../olm-loader";

 import { logger } from "../../src/logger";
 import { IContent, IEvent, IEventRelation, IUnsigned, MatrixEvent, MatrixEventEvent } from "../../src/models/event";
-import { ClientEvent, EventType, IPusher, MatrixClient, MsgType } from "../../src";
+import {
+    ClientEvent,
+    EventType,
+    IJoinedRoom,
+    IPusher,
+    ISyncResponse,
+    MatrixClient,
+    MsgType,
+    RelationType,
+} from "../../src";
 import { SyncState } from "../../src/sync";
 import { eventMapperFor } from "../../src/event-mapper";
+import { TEST_ROOM_ID } from "./test-data";

 /**
 * Return a promise that is resolved when the client next emits a
@@ -39,6 +49,62 @@ export function syncPromise(client: MatrixClient, count = 1): Promise<void> {
    });
 }

+/**
+ * Return a sync response which contains a single room (by default TEST_ROOM_ID), with the members given
+ * @param roomMembers
+ * @param roomId
+ *
+ * @returns the sync response
+ */
+export function getSyncResponse(roomMembers: string[], roomId = TEST_ROOM_ID): ISyncResponse {
+    const roomResponse: IJoinedRoom = {
+        summary: {
+            "m.heroes": [],
+            "m.joined_member_count": roomMembers.length,
+            "m.invited_member_count": roomMembers.length,
+        },
+        state: {
+            events: [
+                mkEventCustom({
+                    sender: roomMembers[0],
+                    type: "m.room.encryption",
+                    state_key: "",
+                    content: {
+                        algorithm: "m.megolm.v1.aes-sha2",
+                    },
+                }),
+            ],
+        },
+        timeline: {
+            events: [],
+            prev_batch: "",
+        },
+        ephemeral: { events: [] },
+        account_data: { events: [] },
+        unread_notifications: {},
+    };
+
+    for (let i = 0; i < roomMembers.length; i++) {
+        roomResponse.state.events.push(
+            mkMembershipCustom({
+                membership: "join",
+                sender: roomMembers[i],
+            }),
+        );
+    }
+
+    return {
+        next_batch: "1",
+        rooms: {
+            join: { [roomId]: roomResponse },
+            invite: {},
+            leave: {},
+            knock: {},
+        },
+        account_data: { events: [] },
+    };
+}
+
 /**
 * Create a spy for an object and automatically spy its methods.
 * @param constr - The class constructor (used with 'new')
@@ -258,6 +324,9 @@ export interface IMessageOpts {
 * @param opts.user - The user ID for the event.
 * @param opts.msg - Optional. The content.body for the event.
 * @param opts.event - True to make a MatrixEvent.
+ * @param opts.relatesTo - An IEventRelation relating this to another event.
+ * @param opts.ts - The timestamp of the event.
+ * @param opts.event - True to make a MatrixEvent.
 * @param client - If passed along with opts.event=true will be used to set up re-emitters.
 * @returns The event
 */
@@ -297,6 +366,7 @@ interface IReplyMessageOpts extends IMessageOpts {
 * @param opts.room - The room ID for the event.
 * @param opts.user - The user ID for the event.
 * @param opts.msg - Optional. The content.body for the event.
+ * @param opts.ts - The timestamp of the event.
 * @param opts.replyToMessage - The replied message
 * @param opts.event - True to make a MatrixEvent.
 * @param client - If passed along with opts.event=true will be used to set up re-emitters.
@@ -330,6 +400,73 @@ export function mkReplyMessage(
    return mkEvent(eventOpts, client);
 }

+/**
+ * Create a reaction event.
+ *
+ * @param target - the event we are reacting to.
+ * @param client - the MatrixClient
+ * @param userId - the userId of the sender
+ * @param roomId - the id of the room we are in
+ * @param ts - The timestamp of the event.
+ * @returns The event
+ */
+export function mkReaction(
+    target: MatrixEvent,
+    client: MatrixClient,
+    userId: string,
+    roomId: string,
+    ts?: number,
+): MatrixEvent {
+    return mkEvent(
+        {
+            event: true,
+            type: EventType.Reaction,
+            user: userId,
+            room: roomId,
+            content: {
+                "m.relates_to": {
+                    rel_type: RelationType.Annotation,
+                    event_id: target.getId()!,
+                    key: Math.random().toString(),
+                },
+            },
+            ts,
+        },
+        client,
+    );
+}
+
+export function mkEdit(
+    target: MatrixEvent,
+    client: MatrixClient,
+    userId: string,
+    roomId: string,
+    msg?: string,
+    ts?: number,
+) {
+    msg = msg ?? `Edit of ${target.getId()}`;
+    return mkEvent(
+        {
+            event: true,
+            type: EventType.RoomMessage,
+            user: userId,
+            room: roomId,
+            content: {
+                "body": `* ${msg}`,
+                "m.new_content": {
+                    body: msg,
+                },
+                "m.relates_to": {
+                    rel_type: RelationType.Replace,
+                    event_id: target.getId()!,
+                },
+            },
+            ts,
+        },
+        client,
+    );
+}
+
 /**
 * A mock implementation of webstorage
 */
@@ -384,10 +521,19 @@ export async function awaitDecryption(
    }

    return new Promise((resolve) => {
-        event.once(MatrixEventEvent.Decrypted, (ev, err) => {
-            logger.log(`${Date.now()}: MatrixEventEvent.Decrypted for event ${event.getId()}: ${err ?? "success"}`);
-            resolve(ev);
-        });
+        if (waitOnDecryptionFailure) {
+            event.on(MatrixEventEvent.Decrypted, (ev, err) => {
+                logger.log(`${Date.now()}: MatrixEventEvent.Decrypted for event ${event.getId()}: ${err ?? "success"}`);
+                if (!err) {
+                    resolve(ev);
+                }
+            });
+        } else {
+            event.once(MatrixEventEvent.Decrypted, (ev, err) => {
+                logger.log(`${Date.now()}: MatrixEventEvent.Decrypted for event ${event.getId()}: ${err ?? "success"}`);
+                resolve(ev);
+            });
+        }
    });
 }

@@ -18,7 +18,7 @@ import { RelationType } from "../../src/@types/event";
 import { MatrixClient } from "../../src/client";
 import { MatrixEvent, MatrixEventEvent } from "../../src/models/event";
 import { Room } from "../../src/models/room";
-import { Thread } from "../../src/models/thread";
+import { Thread, THREAD_RELATION_TYPE } from "../../src/models/thread";
 import { mkMessage } from "./test-utils";

 export const makeThreadEvent = ({
@@ -34,7 +34,7 @@ export const makeThreadEvent = ({
        ...props,
        relatesTo: {
            event_id: rootEventId,
-            rel_type: "m.thread",
+            rel_type: THREAD_RELATION_TYPE.name,
            ["m.in_reply_to"]: {
                event_id: replyToEventId,
            },
@@ -115,6 +115,26 @@ type MakeThreadProps = {
    ts?: number;
 };

+type MakeThreadResult = {
+    /**
+     * Thread model
+     */
+    thread: Thread;
+    /**
+     * Thread root event
+     */
+    rootEvent: MatrixEvent;
+    /**
+     * Events added to the thread
+     */
+    events: MatrixEvent[];
+};
+
+/**
+ * Starts a new thread in a room by creating a message as thread root.
+ * Also creates a Thread model and adds it to the room.
+ * Does not insert the messages into a timeline.
+ */
 export const mkThread = ({
    room,
    client,
@@ -122,7 +142,7 @@ export const mkThread = ({
    participantUserIds,
    length = 2,
    ts = 1,
-}: MakeThreadProps): { thread: Thread; rootEvent: MatrixEvent; events: MatrixEvent[] } => {
+}: MakeThreadProps): MakeThreadResult => {
    const { rootEvent, events } = makeThreadEvents({
        roomId: room.roomId,
        authorId,
@@ -137,7 +157,7 @@ export const mkThread = ({
        room?.reEmitter.reEmit(evt, [MatrixEventEvent.BeforeRedaction]);
    }

-    const thread = room.createThread(rootEvent.getId() ?? "", rootEvent, events, true);
+    const thread = room.createThread(rootEvent.getId() ?? "", rootEvent, [rootEvent, ...events], true);

    return { thread, rootEvent, events };
 };
@@ -485,6 +485,7 @@ export class MockCallMatrixClient extends TypedEventEmitter<EmittedEvents, Emitt

    public getRooms = jest.fn<Room[], []>().mockReturnValue([]);
    public getRoom = jest.fn();
+    public getFoci = jest.fn();

    public supportsThreads(): boolean {
        return true;
@@ -745,3 +746,78 @@ export const REMOTE_SFU_DESCRIPTION =
    "a=sctp-port:5000\n" +
    "a=ice-ufrag:obZwzAcRtxwuozPZ\n" +
    "a=ice-pwd:TWXNaPeyKTTvRLyIQhWHfHlZHJjtcoKs";
+
+export const groupCallParticipantsFourOtherDevices = new Map([
+    [
+        new RoomMember("roomId0", "user1"),
+        new Map([
+            [
+                "deviceId0",
+                {
+                    sessionId: "0",
+                    screensharing: false,
+                },
+            ],
+            [
+                "deviceId1",
+                {
+                    sessionId: "1",
+                    screensharing: false,
+                },
+            ],
+            [
+                "deviceId2",
+                {
+                    sessionId: "2",
+                    screensharing: false,
+                },
+            ],
+        ]),
+    ],
+    [
+        new RoomMember("roomId0", "user2"),
+        new Map([
+            [
+                "deviceId3",
+                {
+                    sessionId: "0",
+                    screensharing: false,
+                },
+            ],
+            [
+                "deviceId4",
+                {
+                    sessionId: "1",
+                    screensharing: false,
+                },
+            ],
+        ]),
+    ],
+]);
+
+export const groupCallParticipantsOneOtherDevice = new Map([
+    [
+        new RoomMember("roomId1", "thisMember"),
+        new Map([
+            [
+                "deviceId0",
+                {
+                    sessionId: "0",
+                    screensharing: false,
+                },
+            ],
+        ]),
+    ],
+    [
+        new RoomMember("roomId1", "opponentMember"),
+        new Map([
+            [
+                "deviceId1",
+                {
+                    sessionId: "1",
+                    screensharing: false,
+                },
+            ],
+        ]),
+    ],
+]);
@@ -15,9 +15,17 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */

+import fetchMock from "fetch-mock-jest";
 import MockHttpBackend from "matrix-mock-request";

+import { AutoDiscoveryAction, M_AUTHENTICATION } from "../../src";
 import { AutoDiscovery } from "../../src/autodiscovery";
+import { OidcError } from "../../src/oidc/error";
+import { makeDelegatedAuthConfig } from "../test-utils/oidc";
+
+// keep to reset the fetch function after using MockHttpBackend
+// @ts-ignore private property
+const realAutoDiscoveryFetch: typeof global.fetch = AutoDiscovery.fetchFn;

 describe("AutoDiscovery", function () {
    const getHttpBackend = (): MockHttpBackend => {
@@ -26,6 +34,10 @@ describe("AutoDiscovery", function () {
        return httpBackend;
    };

+    afterAll(() => {
+        AutoDiscovery.setFetchFn(realAutoDiscoveryFetch);
+    });
+
    it("should throw an error when no domain is specified", function () {
        getHttpBackend();
        return Promise.all([
@@ -339,7 +351,7 @@ describe("AutoDiscovery", function () {
        function () {
            const httpBackend = getHttpBackend();
            httpBackend.when("GET", "/_matrix/client/versions").respond(200, {
-                not_matrix_versions: ["r0.0.1"],
+                not_matrix_versions: ["v1.1"],
            });
            httpBackend.when("GET", "/.well-known/matrix/client").respond(200, {
                "m.homeserver": {
@@ -368,7 +380,7 @@ describe("AutoDiscovery", function () {
        },
    );

-    it("should return SUCCESS when .well-known has a verifiably accurate base_url for " + "m.homeserver", function () {
+    it("should return SUCCESS when .well-known has a verifiably accurate base_url for m.homeserver", function () {
        const httpBackend = getHttpBackend();
        httpBackend
            .when("GET", "/_matrix/client/versions")
@@ -376,7 +388,7 @@ describe("AutoDiscovery", function () {
                expect(req.path).toEqual("https://example.org/_matrix/client/versions");
            })
            .respond(200, {
-                versions: ["r0.0.1"],
+                versions: ["v1.1"],
            });
        httpBackend.when("GET", "/.well-known/matrix/client").respond(200, {
            "m.homeserver": {
@@ -397,6 +409,10 @@ describe("AutoDiscovery", function () {
                        error: null,
                        base_url: null,
                    },
+                    "m.authentication": {
+                        state: "IGNORE",
+                        error: OidcError.NotSupported,
+                    },
                };

                expect(conf).toEqual(expected);
@@ -412,7 +428,7 @@ describe("AutoDiscovery", function () {
                expect(req.path).toEqual("https://chat.example.org/_matrix/client/versions");
            })
            .respond(200, {
-                versions: ["r0.0.1"],
+                versions: ["v1.1"],
            });
        httpBackend.when("GET", "/.well-known/matrix/client").respond(200, {
            "m.homeserver": {
@@ -434,6 +450,54 @@ describe("AutoDiscovery", function () {
                        error: null,
                        base_url: null,
                    },
+                    "m.authentication": {
+                        state: "IGNORE",
+                        error: OidcError.NotSupported,
+                    },
+                };
+
+                expect(conf).toEqual(expected);
+            }),
+        ]);
+    });
+
+    it("should return SUCCESS with authentication error when authentication config is invalid", function () {
+        const httpBackend = getHttpBackend();
+        httpBackend
+            .when("GET", "/_matrix/client/versions")
+            .check((req) => {
+                expect(req.path).toEqual("https://chat.example.org/_matrix/client/versions");
+            })
+            .respond(200, {
+                versions: ["v1.1"],
+            });
+        httpBackend.when("GET", "/.well-known/matrix/client").respond(200, {
+            "m.homeserver": {
+                // Note: we also expect this test to trim the trailing slash
+                base_url: "https://chat.example.org/",
+            },
+            "m.authentication": {
+                invalid: true,
+            },
+        });
+        return Promise.all([
+            httpBackend.flushAllExpected(),
+            AutoDiscovery.findClientConfig("example.org").then((conf) => {
+                const expected = {
+                    "m.homeserver": {
+                        state: "SUCCESS",
+                        error: null,
+                        base_url: "https://chat.example.org",
+                    },
+                    "m.identity_server": {
+                        state: "PROMPT",
+                        error: null,
+                        base_url: null,
+                    },
+                    "m.authentication": {
+                        state: "FAIL_ERROR",
+                        error: OidcError.Misconfigured,
+                    },
                };

                expect(conf).toEqual(expected);
@@ -451,7 +515,7 @@ describe("AutoDiscovery", function () {
                    expect(req.path).toEqual("https://chat.example.org/_matrix/client/versions");
                })
                .respond(200, {
-                    versions: ["r0.0.1"],
+                    versions: ["v1.1"],
                });
            httpBackend.when("GET", "/.well-known/matrix/client").respond(200, {
                "m.homeserver": {
@@ -496,7 +560,7 @@ describe("AutoDiscovery", function () {
                    expect(req.path).toEqual("https://chat.example.org/_matrix/client/versions");
                })
                .respond(200, {
-                    versions: ["r0.0.1"],
+                    versions: ["v1.1"],
                });
            httpBackend.when("GET", "/.well-known/matrix/client").respond(200, {
                "m.homeserver": {
@@ -542,7 +606,7 @@ describe("AutoDiscovery", function () {
                    expect(req.path).toEqual("https://chat.example.org/_matrix/client/versions");
                })
                .respond(200, {
-                    versions: ["r0.0.1"],
+                    versions: ["v1.1"],
                });
            httpBackend.when("GET", "/_matrix/identity/v2").respond(404, {});
            httpBackend.when("GET", "/.well-known/matrix/client").respond(200, {
@@ -589,7 +653,7 @@ describe("AutoDiscovery", function () {
                    expect(req.path).toEqual("https://chat.example.org/_matrix/client/versions");
                })
                .respond(200, {
-                    versions: ["r0.0.1"],
+                    versions: ["v1.1"],
                });
            httpBackend.when("GET", "/_matrix/identity/v2").respond(500, {});
            httpBackend.when("GET", "/.well-known/matrix/client").respond(200, {
@@ -625,7 +689,7 @@ describe("AutoDiscovery", function () {
        },
    );

-    it("should return SUCCESS when the identity server configuration is " + "verifiably accurate", function () {
+    it("should return SUCCESS when the identity server configuration is verifiably accurate", function () {
        const httpBackend = getHttpBackend();
        httpBackend
            .when("GET", "/_matrix/client/versions")
@@ -633,7 +697,7 @@ describe("AutoDiscovery", function () {
                expect(req.path).toEqual("https://chat.example.org/_matrix/client/versions");
            })
            .respond(200, {
-                versions: ["r0.0.1"],
+                versions: ["v1.1"],
            });
        httpBackend
            .when("GET", "/_matrix/identity/v2")
@@ -664,6 +728,10 @@ describe("AutoDiscovery", function () {
                        error: null,
                        base_url: "https://identity.example.org",
                    },
+                    "m.authentication": {
+                        state: "IGNORE",
+                        error: OidcError.NotSupported,
+                    },
                };

                expect(conf).toEqual(expected);
@@ -671,7 +739,7 @@ describe("AutoDiscovery", function () {
        ]);
    });

-    it("should return SUCCESS and preserve non-standard keys from the " + ".well-known response", function () {
+    it("should return SUCCESS and preserve non-standard keys from the .well-known response", function () {
        const httpBackend = getHttpBackend();
        httpBackend
            .when("GET", "/_matrix/client/versions")
@@ -679,7 +747,7 @@ describe("AutoDiscovery", function () {
                expect(req.path).toEqual("https://chat.example.org/_matrix/client/versions");
            })
            .respond(200, {
-                versions: ["r0.0.1"],
+                versions: ["v1.1"],
            });
        httpBackend
            .when("GET", "/_matrix/identity/v2")
@@ -716,6 +784,10 @@ describe("AutoDiscovery", function () {
                    "org.example.custom.property": {
                        cupcakes: "yes",
                    },
+                    "m.authentication": {
+                        state: "IGNORE",
+                        error: OidcError.NotSupported,
+                    },
                };

                expect(conf).toEqual(expected);
@@ -794,4 +866,106 @@ describe("AutoDiscovery", function () {
            }),
        ]);
    });
+
+    it("should FAIL_ERROR for unsupported Matrix version", () => {
+        const httpBackend = getHttpBackend();
+        httpBackend.when("GET", "/.well-known/matrix/client").respond(200, {
+            "m.homeserver": {
+                base_url: "https://example.org",
+            },
+        });
+        httpBackend.when("GET", "/_matrix/client/versions").respond(200, {
+            versions: ["r0.6.0"],
+        });
+        return Promise.all([
+            httpBackend.flushAllExpected(),
+            AutoDiscovery.findClientConfig("example.org").then((conf) => {
+                const expected = {
+                    "m.homeserver": {
+                        state: AutoDiscoveryAction.FAIL_ERROR,
+                        error: AutoDiscovery.ERROR_HOMESERVER_TOO_OLD,
+                        base_url: "https://example.org",
+                    },
+                    "m.identity_server": {
+                        state: "PROMPT",
+                        error: null,
+                        base_url: null,
+                    },
+                };
+
+                expect(conf).toEqual(expected);
+            }),
+        ]);
+    });
+
+    describe("m.authentication", () => {
+        const homeserverName = "example.org";
+        const homeserverUrl = "https://chat.example.org/";
+        const issuer = "https://auth.org/";
+
+        beforeAll(() => {
+            // make these tests independent from fetch mocking above
+            AutoDiscovery.setFetchFn(realAutoDiscoveryFetch);
+        });
+
+        beforeEach(() => {
+            fetchMock.resetBehavior();
+            fetchMock.get(`${homeserverUrl}_matrix/client/versions`, { versions: ["v1.1"] });
+
+            fetchMock.get("https://example.org/.well-known/matrix/client", {
+                "m.homeserver": {
+                    // Note: we also expect this test to trim the trailing slash
+                    base_url: "https://chat.example.org/",
+                },
+                "m.authentication": {
+                    issuer,
+                },
+            });
+        });
+
+        it("should return valid authentication configuration", async () => {
+            const config = makeDelegatedAuthConfig(issuer);
+
+            fetchMock.get(`${config.metadata.issuer}.well-known/openid-configuration`, config.metadata);
+            fetchMock.get(`${config.metadata.issuer}jwks`, {
+                status: 200,
+                headers: {
+                    "Content-Type": "application/json",
+                },
+                keys: [],
+            });
+
+            const result = await AutoDiscovery.findClientConfig(homeserverName);
+
+            expect(result[M_AUTHENTICATION.stable!]).toEqual({
+                state: AutoDiscovery.SUCCESS,
+                ...config,
+                signingKeys: [],
+                account: undefined,
+                error: null,
+            });
+        });
+
+        it("should set state to error for invalid authentication configuration", async () => {
+            const config = makeDelegatedAuthConfig(issuer);
+            // authorization_code is required
+            config.metadata.grant_types_supported = ["openid"];
+
+            fetchMock.get(`${config.metadata.issuer}.well-known/openid-configuration`, config.metadata);
+            fetchMock.get(`${config.metadata.issuer}jwks`, {
+                status: 200,
+                headers: {
+                    "Content-Type": "application/json",
+                },
+                keys: [],
+            });
+
+            const result = await AutoDiscovery.findClientConfig(homeserverName);
+
+            expect(result[M_AUTHENTICATION.stable!]).toEqual({
+                state: AutoDiscovery.FAIL_ERROR,
+                error: OidcError.OpSupport,
+            });
+        });
+    });
 });
@@ -33,7 +33,7 @@ describe("ContentRepo", function () {
        it("should return a download URL if no width/height/resize are specified", function () {
            const mxcUri = "mxc://server.name/resourceid";
            expect(getHttpUriForMxc(baseUrl, mxcUri)).toEqual(
-                baseUrl + "/_matrix/media/r0/download/server.name/resourceid",
+                baseUrl + "/_matrix/media/v3/download/server.name/resourceid",
            );
        });

@@ -44,21 +44,21 @@ describe("ContentRepo", function () {
        it("should return a thumbnail URL if a width/height/resize is specified", function () {
            const mxcUri = "mxc://server.name/resourceid";
            expect(getHttpUriForMxc(baseUrl, mxcUri, 32, 64, "crop")).toEqual(
-                baseUrl + "/_matrix/media/r0/thumbnail/server.name/resourceid" + "?width=32&height=64&method=crop",
+                baseUrl + "/_matrix/media/v3/thumbnail/server.name/resourceid" + "?width=32&height=64&method=crop",
            );
        });

        it("should put fragments from mxc:// URIs after any query parameters", function () {
            const mxcUri = "mxc://server.name/resourceid#automade";
            expect(getHttpUriForMxc(baseUrl, mxcUri, 32)).toEqual(
-                baseUrl + "/_matrix/media/r0/thumbnail/server.name/resourceid" + "?width=32#automade",
+                baseUrl + "/_matrix/media/v3/thumbnail/server.name/resourceid" + "?width=32#automade",
            );
        });

        it("should put fragments from mxc:// URIs at the end of the HTTP URI", function () {
            const mxcUri = "mxc://server.name/resourceid#automade";
            expect(getHttpUriForMxc(baseUrl, mxcUri)).toEqual(
-                baseUrl + "/_matrix/media/r0/download/server.name/resourceid#automade",
+                baseUrl + "/_matrix/media/v3/download/server.name/resourceid#automade",
            );
        });
    });
@@ -15,11 +15,16 @@ import { sleep } from "../../src/utils";
 import { CRYPTO_ENABLED } from "../../src/client";
 import { DeviceInfo } from "../../src/crypto/deviceinfo";
 import { logger } from "../../src/logger";
-import { MemoryStore } from "../../src";
+import { DeviceVerification, MemoryStore } from "../../src";
 import { RoomKeyRequestState } from "../../src/crypto/OutgoingRoomKeyRequestManager";
 import { RoomMember } from "../../src/models/room-member";
 import { IStore } from "../../src/store";
 import { IRoomEncryption, RoomList } from "../../src/crypto/RoomList";
+import { EventShieldColour, EventShieldReason } from "../../src/crypto-api";
+import { UserTrustLevel } from "../../src/crypto/CrossSigning";
+import { CryptoBackend } from "../../src/common-crypto/CryptoBackend";
+import { EventDecryptionResult } from "../../src/common-crypto/CryptoBackend";
+import * as testData from "../test-utils/test-data";

 const Olm = global.Olm;

@@ -111,13 +116,14 @@ describe("Crypto", function () {
    });

    describe("encrypted events", function () {
-        it("provides encryption information", async function () {
+        it("provides encryption information for events from unverified senders", async function () {
            const client = new TestClient("@alice:example.com", "deviceid").client;
            await client.initCrypto();

            // unencrypted event
            const event = {
                getId: () => "$event_id",
+                getSender: () => "@bob:example.com",
                getSenderKey: () => null,
                getWireContent: () => {
                    return {};
@@ -127,6 +133,8 @@ describe("Crypto", function () {
            let encryptionInfo = client.getEventEncryptionInfo(event);
            expect(encryptionInfo.encrypted).toBeFalsy();

+            expect(await client.getCrypto()!.getEncryptionInfoForEvent(event)).toBe(null);
+
            // unknown sender (e.g. deleted device), forwarded megolm key (untrusted)
            event.getSenderKey = () => "YmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmJiYmI";
            event.getWireContent = () => {
@@ -141,6 +149,11 @@ describe("Crypto", function () {
            expect(encryptionInfo.authenticated).toBeFalsy();
            expect(encryptionInfo.sender).toBeFalsy();

+            expect(await client.getCrypto()!.getEncryptionInfoForEvent(event)).toEqual({
+                shieldColour: EventShieldColour.GREY,
+                shieldReason: EventShieldReason.AUTHENTICITY_NOT_GUARANTEED,
+            });
+
            // known sender, megolm key from backup
            event.getForwardingCurve25519KeyChain = () => [];
            event.isKeySourceUntrusted = () => true;
@@ -155,6 +168,11 @@ describe("Crypto", function () {
            expect(encryptionInfo.sender).toBeTruthy();
            expect(encryptionInfo.mismatchedSender).toBeFalsy();

+            expect(await client.getCrypto()!.getEncryptionInfoForEvent(event)).toEqual({
+                shieldColour: EventShieldColour.GREY,
+                shieldReason: EventShieldReason.AUTHENTICITY_NOT_GUARANTEED,
+            });
+
            // known sender, trusted megolm key, but bad ed25519key
            event.isKeySourceUntrusted = () => false;
            device.keys["ed25519:FLIBBLE"] = "BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB";
@@ -165,9 +183,115 @@ describe("Crypto", function () {
            expect(encryptionInfo.sender).toBeTruthy();
            expect(encryptionInfo.mismatchedSender).toBeTruthy();

+            expect(await client.getCrypto()!.getEncryptionInfoForEvent(event)).toEqual({
+                shieldColour: EventShieldColour.RED,
+                shieldReason: EventShieldReason.MISMATCHED_SENDER_KEY,
+            });
+
            client.stopClient();
        });

+        describe("provides encryption information for events from verified senders", function () {
+            const testDeviceId = testData.BOB_TEST_DEVICE_ID;
+            const testDevice = testData.BOB_SIGNED_TEST_DEVICE_DATA;
+
+            let client: MatrixClient;
+            beforeEach(async () => {
+                client = new TestClient("@alice:example.com", "deviceid").client;
+                await client.initCrypto();
+
+                // mock out the verification check
+                client.crypto!.checkUserTrust = (userId) => new UserTrustLevel(true, false, false);
+            });
+
+            afterEach(() => {
+                client.stopClient();
+            });
+
+            async function buildEncryptedEvent(
+                decryptionResult: Partial<EventDecryptionResult> = {},
+            ): Promise<MatrixEvent> {
+                const mockCryptoBackend = {
+                    decryptEvent: async (event: MatrixEvent): Promise<EventDecryptionResult> => {
+                        return {
+                            claimedEd25519Key: testDevice.keys["ed25519:" + testDeviceId],
+                            clearEvent: {
+                                room_id: "!room_id",
+                                type: "m.room.message",
+                                content: { body: "test" },
+                            },
+                            forwardingCurve25519KeyChain: [],
+                            senderCurve25519Key: testDevice.keys["curve25519:" + testDeviceId],
+                            ...decryptionResult,
+                        };
+                    },
+                } as unknown as CryptoBackend;
+
+                const event = new MatrixEvent({
+                    event_id: "$event_id",
+                    sender: testData.BOB_TEST_USER_ID,
+                    type: "m.room.encrypted",
+                    content: { algorithm: "m.megolm.v1.aes-sha2" },
+                });
+                await event.attemptDecryption(mockCryptoBackend);
+                return event;
+            }
+
+            it("unknown device", async () => {
+                const event = await buildEncryptedEvent();
+                expect(await client.getCrypto()!.getEncryptionInfoForEvent(event)).toEqual({
+                    shieldColour: EventShieldColour.GREY,
+                    shieldReason: EventShieldReason.UNKNOWN_DEVICE,
+                });
+            });
+
+            it("known but unsigned device", async () => {
+                client.crypto!.deviceList.storeDevicesForUser(testData.BOB_TEST_USER_ID, {
+                    [testDeviceId]: {
+                        keys: testDevice.keys,
+                        algorithms: testDevice.algorithms,
+                        verified: DeviceVerification.Unverified,
+                        known: true,
+                    },
+                });
+
+                const event = await buildEncryptedEvent();
+                expect(await client.getCrypto()!.getEncryptionInfoForEvent(event)).toEqual({
+                    shieldColour: EventShieldColour.RED,
+                    shieldReason: EventShieldReason.UNVERIFIED_IDENTITY,
+                });
+            });
+
+            describe("known and verified device", () => {
+                beforeEach(() => {
+                    client.crypto!.deviceList.storeDevicesForUser(testData.BOB_TEST_USER_ID, {
+                        [testDeviceId]: {
+                            keys: testDevice.keys,
+                            algorithms: testDevice.algorithms,
+                            verified: DeviceVerification.Verified,
+                            known: true,
+                        },
+                    });
+                });
+
+                it("regular key", async () => {
+                    const event = await buildEncryptedEvent();
+                    expect(await client.getCrypto()!.getEncryptionInfoForEvent(event)).toEqual({
+                        shieldColour: EventShieldColour.NONE,
+                        shieldReason: null,
+                    });
+                });
+
+                it("unauthenticated key", async () => {
+                    const event = await buildEncryptedEvent({ untrusted: true });
+                    expect(await client.getCrypto()!.getEncryptionInfoForEvent(event)).toEqual({
+                        shieldColour: EventShieldColour.GREY,
+                        shieldReason: EventShieldReason.AUTHENTICITY_NOT_GUARANTEED,
+                    });
+                });
+            });
+        });
+
        it("doesn't throw an error when attempting to decrypt a redacted event", async () => {
            const client = new TestClient("@alice:example.com", "deviceid").client;
            await client.initCrypto();
@@ -381,12 +505,7 @@ describe("Crypto", function () {
                    event.senderCurve25519Key = null;
                    // @ts-ignore private properties
                    event.claimedEd25519Key = null;
-                    try {
-                        await bobClient.crypto!.decryptEvent(event);
-                    } catch (e) {
-                        // we expect this to fail because we don't have the
-                        // decryption keys yet
-                    }
+                    await expect(bobClient.crypto!.decryptEvent(event)).rejects.toBeTruthy();
                }),
            );

@@ -617,12 +736,7 @@ describe("Crypto", function () {
                    event.senderCurve25519Key = null;
                    // @ts-ignore private properties
                    event.claimedEd25519Key = null;
-                    try {
-                        await secondAliceClient.crypto!.decryptEvent(event);
-                    } catch (e) {
-                        // we expect this to fail because we don't have the
-                        // decryption keys yet
-                    }
+                    await expect(secondAliceClient.crypto!.decryptEvent(event)).rejects.toBeTruthy();
                }),
            );

@@ -725,12 +839,7 @@ describe("Crypto", function () {
                    event.senderCurve25519Key = null;
                    // @ts-ignore private properties
                    event.claimedEd25519Key = null;
-                    try {
-                        await bobClient.crypto!.decryptEvent(event);
-                    } catch (e) {
-                        // we expect this to fail because we don't have the
-                        // decryption keys yet
-                    }
+                    await expect(bobClient.crypto!.decryptEvent(event)).rejects.toBeTruthy();
                }),
            );

@@ -805,12 +914,7 @@ describe("Crypto", function () {
                    event.senderCurve25519Key = null;
                    // @ts-ignore private properties
                    event.claimedEd25519Key = null;
-                    try {
-                        await bobClient.crypto!.decryptEvent(event);
-                    } catch (e) {
-                        // we expect this to fail because we don't have the
-                        // decryption keys yet
-                    }
+                    await expect(bobClient.crypto!.decryptEvent(event)).rejects.toBeTruthy();
                }),
            );

@@ -897,12 +1001,7 @@ describe("Crypto", function () {
                    event.senderCurve25519Key = null;
                    // @ts-ignore private properties
                    event.claimedEd25519Key = null;
-                    try {
-                        await bobClient.crypto!.decryptEvent(event);
-                    } catch (e) {
-                        // we expect this to fail because we don't have the
-                        // decryption keys yet
-                    }
+                    await expect(bobClient.crypto!.decryptEvent(event)).rejects.toBeTruthy();
                }),
            );

@@ -129,7 +129,7 @@ describe("DeviceList", function () {
        });
    });

-    it("should have an outdated devicelist on an invalidation while an " + "update is in progress", function () {
+    it("should have an outdated devicelist on an invalidation while an update is in progress", async function () {
        const dl = createTestDeviceList();

        dl.startTrackingDeviceList("@test1:sw1v.org");
@@ -148,11 +148,8 @@ describe("DeviceList", function () {
        dl.invalidateUserDeviceList("@test1:sw1v.org");
        dl.refreshOutdatedDeviceLists();

-        // TODO: Fix this test so we actually await the call and assertions and remove
-        // the eslint disable, https://github.com/matrix-org/matrix-js-sdk/issues/2977
-        //
-        // eslint-disable-next-line jest/valid-expect-in-promise
-        dl.saveIfDirty()
+        await dl
+            .saveIfDirty()
            .then(() => {
                // the first request completes
                queryDefer1.resolve({
@@ -163,12 +160,13 @@ describe("DeviceList", function () {
                });
                return prom1;
            })
-            .then(() => {
+            .then(async () => {
                // uh-oh; user restarts before second request completes. The new instance
                // should know we never got a complete device list.
                logger.log("Creating new devicelist to simulate app reload");
                downloadSpy.mockReset();
                const dl2 = createTestDeviceList();
+                await dl2.load();
                const queryDefer3 = utils.defer<IDownloadKeyResult>();
                downloadSpy.mockReturnValue(queryDefer3.promise);

@@ -0,0 +1,52 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { TextEncoder, TextDecoder } from "util";
+
+import { decodeBase64, encodeBase64, encodeUnpaddedBase64 } from "../../../src/common-crypto/base64";
+
+describe("Crypto Base64 encoding", () => {
+    it("Should decode properly encoded data", async () => {
+        const toEncode = "encoding hello world";
+        const encoded = encodeBase64(new TextEncoder().encode(toEncode));
+        const decoded = new TextDecoder().decode(decodeBase64(encoded));
+
+        expect(decoded).toStrictEqual(toEncode);
+    });
+
+    it("Encode unpadded should not have padding", async () => {
+        const toEncode = "encoding hello world";
+        const data = new TextEncoder().encode(toEncode);
+
+        const paddedEncoded = encodeBase64(data);
+        const unpaddedEncoded = encodeUnpaddedBase64(data);
+
+        expect(paddedEncoded).not.toEqual(unpaddedEncoded);
+
+        const padding = paddedEncoded.charAt(paddedEncoded.length - 1);
+        expect(padding).toStrictEqual("=");
+    });
+
+    it("Decode should be indifferent to padding", async () => {
+        const withPadding = "ZW5jb2RpbmcgaGVsbG8gd29ybGQ=";
+        const withoutPadding = "ZW5jb2RpbmcgaGVsbG8gd29ybGQ";
+
+        const decodedPad = decodeBase64(withPadding);
+        const decodedNoPad = decodeBase64(withoutPadding);
+
+        expect(decodedPad).toStrictEqual(decodedNoPad);
+    });
+});
@@ -148,22 +148,14 @@ describe("Secrets", function () {
    it("should throw if given a key that doesn't exist", async function () {
        const alice = await makeTestClient({ userId: "@alice:example.com", deviceId: "Osborne2" });

-        try {
-            await alice.storeSecret("foo", "bar", ["this secret does not exist"]);
-            // should be able to use expect(...).toThrow() but mocha still fails
-            // the test even when it throws for reasons I have no inclination to debug
-            expect(true).toBeFalsy();
-        } catch (e) {}
+        await expect(alice.storeSecret("foo", "bar", ["this secret does not exist"])).rejects.toBeTruthy();
        alice.stopClient();
    });

    it("should refuse to encrypt with zero keys", async function () {
        const alice = await makeTestClient({ userId: "@alice:example.com", deviceId: "Osborne2" });

-        try {
-            await alice.storeSecret("foo", "bar", []);
-            expect(true).toBeFalsy();
-        } catch (e) {}
+        await expect(alice.storeSecret("foo", "bar", [])).rejects.toBeTruthy();
        alice.stopClient();
    });

@@ -214,10 +206,7 @@ describe("Secrets", function () {
    it("should refuse to encrypt if no keys given and no default key", async function () {
        const alice = await makeTestClient({ userId: "@alice:example.com", deviceId: "Osborne2" });

-        try {
-            await alice.storeSecret("foo", "bar");
-            expect(true).toBeFalsy();
-        } catch (e) {}
+        await expect(alice.storeSecret("foo", "bar")).rejects.toBeTruthy();
        alice.stopClient();
    });

@@ -323,6 +312,7 @@ describe("Secrets", function () {
                this.emit(ClientEvent.AccountData, event);
                return {};
            };
+            bob.getKeyBackupVersion = jest.fn().mockResolvedValue(null);

            await bob.bootstrapCrossSigning({
                authUploadDeviceSigningKeys: async (func) => {
@@ -144,7 +144,7 @@ describe("SAS verification", function () {
                                expect(e.sas).toEqual(aliceSasEvent.sas);
                                e.confirm();
                                aliceSasEvent.confirm();
-                            } catch (error) {
+                            } catch {
                                e.mismatch();
                                aliceSasEvent.mismatch();
                            }
@@ -169,7 +169,7 @@ describe("SAS verification", function () {
                        expect(e.sas).toEqual(bobSasEvent.sas);
                        e.confirm();
                        bobSasEvent.confirm();
-                    } catch (error) {
+                    } catch {
                        e.mismatch();
                        bobSasEvent.mismatch();
                    }
@@ -519,7 +519,7 @@ describe("SAS verification", function () {
                                expect(e.sas).toEqual(aliceSasEvent.sas);
                                e.confirm();
                                aliceSasEvent.confirm();
-                            } catch (error) {
+                            } catch {
                                e.mismatch();
                                aliceSasEvent.mismatch();
                            }
@@ -543,7 +543,7 @@ describe("SAS verification", function () {
                        expect(e.sas).toEqual(bobSasEvent.sas);
                        e.confirm();
                        bobSasEvent.confirm();
-                    } catch (error) {
+                    } catch {
                        e.mismatch();
                        bobSasEvent.mismatch();
                    }
@@ -23,7 +23,14 @@ limitations under the License.
 // eslint-disable-next-line no-restricted-imports
 import { EventEmitter } from "events";
 import { MockedObject } from "jest-mock";
-import { WidgetApi, WidgetApiToWidgetAction, MatrixCapabilities, ITurnServer, IRoomEvent } from "matrix-widget-api";
+import {
+    WidgetApi,
+    WidgetApiToWidgetAction,
+    MatrixCapabilities,
+    ITurnServer,
+    IRoomEvent,
+    IOpenIDCredentials,
+} from "matrix-widget-api";

 import { createRoomWidgetClient, MsgType } from "../../src/matrix";
 import { MatrixClient, ClientEvent, ITurnServer as IClientTurnServer } from "../../src/client";
@@ -33,6 +40,12 @@ import { MatrixEvent } from "../../src/models/event";
 import { ToDeviceBatch } from "../../src/models/ToDeviceMessage";
 import { DeviceInfo } from "../../src/crypto/deviceinfo";

+const testOIDCToken = {
+    access_token: "12345678",
+    expires_in: "10",
+    matrix_server_name: "homeserver.oabc",
+    token_type: "Bearer",
+};
 class MockWidgetApi extends EventEmitter {
    public start = jest.fn();
    public requestCapability = jest.fn();
@@ -49,8 +62,15 @@ class MockWidgetApi extends EventEmitter {
    public sendRoomEvent = jest.fn(() => ({ event_id: `$${Math.random()}` }));
    public sendStateEvent = jest.fn();
    public sendToDevice = jest.fn();
+    public requestOpenIDConnectToken = jest.fn(() => {
+        return testOIDCToken;
+        return new Promise<IOpenIDCredentials>(() => {
+            return testOIDCToken;
+        });
+    });
    public readStateEvents = jest.fn(() => []);
    public getTurnServers = jest.fn(() => []);
+    public sendContentLoaded = jest.fn();

    public transport = { reply: jest.fn() };
 }
@@ -285,7 +305,12 @@ describe("RoomWidgetClient", () => {
            expect(await emittedSync).toEqual(SyncState.Syncing);
        });
    });
-
+    describe("oidc token", () => {
+        it("requests an oidc token", async () => {
+            await makeClient({});
+            expect(await client.getOpenIdToken()).toStrictEqual(testOIDCToken);
+        });
+    });
    it("gets TURN servers", async () => {
        const server1: ITurnServer = {
            uris: [
@@ -14,6 +14,8 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */

+import { mocked } from "jest-mock";
+
 import * as utils from "../test-utils/test-utils";
 import {
    DuplicateStrategy,
@@ -24,13 +26,10 @@ import {
    MatrixClient,
    MatrixEvent,
    MatrixEventEvent,
-    RelationType,
    Room,
-    RoomEvent,
 } from "../../src";
-import { FeatureSupport, Thread } from "../../src/models/thread";
+import { Thread } from "../../src/models/thread";
 import { ReEmitter } from "../../src/ReEmitter";
-import { eventMapperFor } from "../../src/event-mapper";

 describe("EventTimelineSet", () => {
    const roomId = "!foo:bar";
@@ -145,13 +144,6 @@ describe("EventTimelineSet", () => {
    });

    describe("addEventToTimeline", () => {
-        let thread: Thread;
-
-        beforeEach(() => {
-            (client.supportsThreads as jest.Mock).mockReturnValue(true);
-            thread = new Thread("!thread_id:server", messageEvent, { room, client });
-        });
-
        it("Adds event to timeline", () => {
            const liveTimeline = eventTimelineSet.getLiveTimeline();
            expect(liveTimeline.getEvents().length).toStrictEqual(0);
@@ -171,6 +163,42 @@ describe("EventTimelineSet", () => {
            }).not.toThrow();
        });

+        it("should aggregate relations which belong to unknown timeline without adding them to any timeline", () => {
+            // If threads are disabled all events go into the main timeline
+            mocked(client.supportsThreads).mockReturnValue(true);
+            const reactionEvent = utils.mkReaction(messageEvent, client, client.getSafeUserId(), roomId);
+
+            const liveTimeline = eventTimelineSet.getLiveTimeline();
+            expect(liveTimeline.getEvents().length).toStrictEqual(0);
+            eventTimelineSet.addEventToTimeline(reactionEvent, liveTimeline, {
+                toStartOfTimeline: true,
+            });
+            expect(liveTimeline.getEvents().length).toStrictEqual(0);
+
+            eventTimelineSet.addEventToTimeline(messageEvent, liveTimeline, {
+                toStartOfTimeline: true,
+            });
+            expect(liveTimeline.getEvents()).toHaveLength(1);
+            const [event] = liveTimeline.getEvents();
+            const reactions = eventTimelineSet.relations!.getChildEventsForEvent(
+                event.getId()!,
+                "m.annotation",
+                "m.reaction",
+            )!;
+            const relations = reactions.getRelations();
+            expect(relations).toHaveLength(1);
+            expect(relations[0].getId()).toBe(reactionEvent.getId());
+        });
+    });
+
+    describe("addEventToTimeline (thread timeline)", () => {
+        let thread: Thread;
+
+        beforeEach(() => {
+            (client.supportsThreads as jest.Mock).mockReturnValue(true);
+            thread = new Thread("!thread_id:server", messageEvent, { room, client });
+        });
+
        it("should not add an event to a timeline that does not belong to the timelineSet", () => {
            const eventTimelineSet2 = new EventTimelineSet(room);
            const liveTimeline2 = eventTimelineSet2.getLiveTimeline();
@@ -200,94 +228,19 @@ describe("EventTimelineSet", () => {
            const liveTimeline = eventTimelineSetForThread.getLiveTimeline();
            expect(liveTimeline.getEvents().length).toStrictEqual(0);

-            eventTimelineSetForThread.addEventToTimeline(messageEvent, liveTimeline, {
+            const normalMessage = utils.mkMessage({
+                room: roomId,
+                user: userA,
+                msg: "Hello!",
+                event: true,
+            });
+
+            eventTimelineSetForThread.addEventToTimeline(normalMessage, liveTimeline, {
                toStartOfTimeline: true,
            });
            expect(liveTimeline.getEvents().length).toStrictEqual(0);
        });

-        it("should allow edits to be added to thread timeline", async () => {
-            jest.spyOn(client, "supportsThreads").mockReturnValue(true);
-            jest.spyOn(client, "getEventMapper").mockReturnValue(eventMapperFor(client, {}));
-            Thread.hasServerSideSupport = FeatureSupport.Stable;
-
-            const sender = "@alice:matrix.org";
-
-            const root = utils.mkEvent({
-                event: true,
-                content: {
-                    body: "Thread root",
-                },
-                type: EventType.RoomMessage,
-                sender,
-            });
-            room.addLiveEvents([root]);
-
-            const threadReply = utils.mkEvent({
-                event: true,
-                content: {
-                    "body": "Thread reply",
-                    "m.relates_to": {
-                        event_id: root.getId()!,
-                        rel_type: RelationType.Thread,
-                    },
-                },
-                type: EventType.RoomMessage,
-                sender,
-            });
-
-            root.setUnsigned({
-                "m.relations": {
-                    [RelationType.Thread]: {
-                        count: 1,
-                        latest_event: {
-                            content: threadReply.getContent(),
-                            origin_server_ts: 5,
-                            room_id: room.roomId,
-                            sender,
-                            type: EventType.RoomMessage,
-                            event_id: threadReply.getId()!,
-                            user_id: sender,
-                            age: 1,
-                        },
-                        current_user_participated: true,
-                    },
-                },
-            });
-
-            const editToThreadReply = utils.mkEvent({
-                event: true,
-                content: {
-                    "body": " * edit",
-                    "m.new_content": {
-                        "body": "edit",
-                        "msgtype": "m.text",
-                        "org.matrix.msc1767.text": "edit",
-                    },
-                    "m.relates_to": {
-                        event_id: threadReply.getId()!,
-                        rel_type: RelationType.Replace,
-                    },
-                },
-                type: EventType.RoomMessage,
-                sender,
-            });
-
-            jest.spyOn(client, "paginateEventTimeline").mockImplementation(async () => {
-                thread.timelineSet.getLiveTimeline().addEvent(threadReply, { toStartOfTimeline: true });
-                return true;
-            });
-            jest.spyOn(client, "relations").mockResolvedValue({
-                events: [],
-            });
-
-            const thread = room.createThread(root.getId()!, root, [threadReply, editToThreadReply], false);
-            thread.once(RoomEvent.TimelineReset, () => {
-                const lastEvent = thread.timeline.at(-1)!;
-                expect(lastEvent.getContent().body).toBe(" * edit");
-            });
-        });
-
        describe("non-room timeline", () => {
            it("Adds event to timeline", () => {
                const nonRoomEventTimelineSet = new EventTimelineSet(
@@ -421,7 +374,9 @@ describe("EventTimelineSet", () => {
        });

        it("should return true if the timeline set is not for a thread and the event is a thread root", () => {
+            const thread = new Thread(messageEvent.getId()!, messageEvent, { room, client });
            const eventTimelineSet = new EventTimelineSet(room, {}, client);
+            messageEvent.setThread(thread);
            expect(eventTimelineSet.canContain(messageEvent)).toBeTruthy();
        });

@@ -6,6 +6,6 @@ exports[`MatrixHttpApi should return expected object from \`getContentUri\` 1`]
  "params": {
    "access_token": "token",
  },
-  "path": "/_matrix/media/r0/upload",
+  "path": "/_matrix/media/v3/upload",
 }
 `;
@@ -14,10 +14,14 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */

+import { mocked } from "jest-mock";
+
 import { FetchHttpApi } from "../../../src/http-api/fetch";
 import { TypedEventEmitter } from "../../../src/models/typed-event-emitter";
 import { ClientPrefix, HttpApiEvent, HttpApiEventHandlerMap, IdentityPrefix, IHttpOpts, Method } from "../../../src";
 import { emitPromise } from "../../test-utils/test-utils";
+import { defer, QueryDict } from "../../../src/utils";
+import { logger } from "../../../src/logger";

 describe("FetchHttpApi", () => {
    const baseUrl = "http://baseUrl";
@@ -235,4 +239,86 @@ describe("FetchHttpApi", () => {
            expect(fetchFn.mock.calls[0][1].headers.Authorization).toBeUndefined();
        });
    });
+
+    describe("getUrl()", () => {
+        const localBaseUrl = "http://baseurl";
+        const baseUrlWithTrailingSlash = "http://baseurl/";
+        const makeApi = (thisBaseUrl = baseUrl): FetchHttpApi<any> => {
+            const fetchFn = jest.fn();
+            const emitter = new TypedEventEmitter<HttpApiEvent, HttpApiEventHandlerMap>();
+            return new FetchHttpApi(emitter, { baseUrl: thisBaseUrl, prefix, fetchFn });
+        };
+
+        type TestParams = {
+            path: string;
+            queryParams?: QueryDict;
+            prefix?: string;
+            baseUrl?: string;
+        };
+        type TestCase = [TestParams, string];
+        const queryParams: QueryDict = {
+            test1: 99,
+            test2: ["a", "b"],
+        };
+        const testPrefix = "/just/testing";
+        const testUrl = "http://justtesting.com";
+        const testUrlWithTrailingSlash = "http://justtesting.com/";
+
+        const testCases: TestCase[] = [
+            [{ path: "/terms" }, `${localBaseUrl}${prefix}/terms`],
+            [{ path: "/terms", queryParams }, `${localBaseUrl}${prefix}/terms?test1=99&test2=a&test2=b`],
+            [{ path: "/terms", prefix: testPrefix }, `${localBaseUrl}${testPrefix}/terms`],
+            [{ path: "/terms", baseUrl: testUrl }, `${testUrl}${prefix}/terms`],
+            [{ path: "/terms", baseUrl: testUrlWithTrailingSlash }, `${testUrl}${prefix}/terms`],
+            [
+                { path: "/terms", queryParams, prefix: testPrefix, baseUrl: testUrl },
+                `${testUrl}${testPrefix}/terms?test1=99&test2=a&test2=b`,
+            ],
+        ];
+        const runTests = (fetchBaseUrl: string) => {
+            it.each<TestCase>(testCases)(
+                "creates url with params %s => %s",
+                ({ path, queryParams, prefix, baseUrl }, expected) => {
+                    const api = makeApi(fetchBaseUrl);
+
+                    const result = api.getUrl(path, queryParams, prefix, baseUrl);
+                    // we only check the stringified URL, to avoid having the test depend on the internals of URL.
+                    expect(result.toString()).toEqual(expected);
+                },
+            );
+        };
+
+        describe("when fetch.opts.baseUrl does not have a trailing slash", () => {
+            runTests(localBaseUrl);
+        });
+        describe("when fetch.opts.baseUrl does have a trailing slash", () => {
+            runTests(baseUrlWithTrailingSlash);
+        });
+    });
+
+    it("should not log query parameters", async () => {
+        jest.useFakeTimers();
+        const deferred = defer<Response>();
+        const fetchFn = jest.fn().mockReturnValue(deferred.promise);
+        jest.spyOn(logger, "debug").mockImplementation(() => {});
+        const api = new FetchHttpApi(new TypedEventEmitter<any, any>(), { baseUrl, prefix, fetchFn });
+        const prom = api.requestOtherUrl(Method.Get, "https://server:8448/some/path?query=param#fragment");
+        jest.advanceTimersByTime(1234);
+        deferred.resolve({ ok: true, status: 200, text: () => Promise.resolve("RESPONSE") } as Response);
+        await prom;
+        expect(logger.debug).not.toHaveBeenCalledWith("fragment");
+        expect(logger.debug).not.toHaveBeenCalledWith("query");
+        expect(logger.debug).not.toHaveBeenCalledWith("param");
+        expect(logger.debug).toHaveBeenCalledTimes(2);
+        expect(mocked(logger.debug).mock.calls[0]).toMatchInlineSnapshot(`
+            [
+              "FetchHttpApi: --> GET https://server:8448/some/path?query=xxx",
+            ]
+        `);
+        expect(mocked(logger.debug).mock.calls[1]).toMatchInlineSnapshot(`
+            [
+              "FetchHttpApi: <-- GET https://server:8448/some/path?query=xxx [1234ms 200]",
+            ]
+        `);
+    });
 });
@@ -84,7 +84,7 @@ describe("MatrixHttpApi", () => {
        upload = api.uploadContent({} as File);
        expect(xhr.open).toHaveBeenCalledWith(
            Method.Post,
-            baseUrl.toLowerCase() + "/_matrix/media/r0/upload?access_token=token",
+            baseUrl.toLowerCase() + "/_matrix/media/v3/upload?access_token=token",
        );
        expect(xhr.setRequestHeader).not.toHaveBeenCalledWith("Authorization");
    });
@@ -96,7 +96,7 @@ describe("MatrixHttpApi", () => {
            accessToken: "token",
        });
        upload = api.uploadContent({} as File);
-        expect(xhr.open).toHaveBeenCalledWith(Method.Post, baseUrl.toLowerCase() + "/_matrix/media/r0/upload");
+        expect(xhr.open).toHaveBeenCalledWith(Method.Post, baseUrl.toLowerCase() + "/_matrix/media/v3/upload");
        expect(xhr.setRequestHeader).toHaveBeenCalledWith("Authorization", "Bearer token");
    });

@@ -105,14 +105,14 @@ describe("MatrixHttpApi", () => {
        upload = api.uploadContent({} as File, { name: "name" });
        expect(xhr.open).toHaveBeenCalledWith(
            Method.Post,
-            baseUrl.toLowerCase() + "/_matrix/media/r0/upload?filename=name",
+            baseUrl.toLowerCase() + "/_matrix/media/v3/upload?filename=name",
        );
    });

    it("should allow not sending the filename", () => {
        const api = new MatrixHttpApi(new TypedEventEmitter<any, any>(), { baseUrl, prefix });
        upload = api.uploadContent({} as File, { name: "name", includeFilename: false });
-        expect(xhr.open).toHaveBeenCalledWith(Method.Post, baseUrl.toLowerCase() + "/_matrix/media/r0/upload");
+        expect(xhr.open).toHaveBeenCalledWith(Method.Post, baseUrl.toLowerCase() + "/_matrix/media/v3/upload");
    });

    it("should abort xhr when the upload is aborted", () => {
@@ -94,7 +94,6 @@ describe("InteractiveAuth", () => {
            authData: {
                session: "sessionId",
                flows: [{ stages: [AuthType.Password] }],
-                errcode: "MockError0",
                params: {
                    [AuthType.Password]: { param: "aa" },
                },
@@ -376,7 +375,7 @@ describe("InteractiveAuth", () => {
        await expect(ia.attemptAuth.bind(ia)).rejects.toThrow(new Error("No appropriate authentication flow found"));
    });

-    it("should handle unexpected error types without data propery set", async () => {
+    it("should handle unexpected error types without data property set", async () => {
        const doRequest = jest.fn();
        const stateUpdated = jest.fn();
        const requestEmailToken = jest.fn();
@@ -517,4 +516,88 @@ describe("InteractiveAuth", () => {
            expect(ia.getEmailSid()).toEqual(sid);
        });
    });
+
+    it("should prioritise shorter flows", async () => {
+        const doRequest = jest.fn();
+        const stateUpdated = jest.fn();
+
+        const ia = new InteractiveAuth({
+            matrixClient: getFakeClient(),
+            doRequest: doRequest,
+            stateUpdated: stateUpdated,
+            requestEmailToken: jest.fn(),
+            authData: {
+                session: "sessionId",
+                flows: [{ stages: [AuthType.Recaptcha, AuthType.Password] }, { stages: [AuthType.Password] }],
+                params: {},
+            },
+        });
+
+        // @ts-ignore
+        ia.chooseStage();
+        expect(ia.getChosenFlow()?.stages).toEqual([AuthType.Password]);
+    });
+
+    it("should prioritise flows with entirely supported stages", async () => {
+        const doRequest = jest.fn();
+        const stateUpdated = jest.fn();
+
+        const ia = new InteractiveAuth({
+            matrixClient: getFakeClient(),
+            doRequest: doRequest,
+            stateUpdated: stateUpdated,
+            requestEmailToken: jest.fn(),
+            authData: {
+                session: "sessionId",
+                flows: [{ stages: ["com.devture.shared_secret_auth"] }, { stages: [AuthType.Password] }],
+                params: {},
+            },
+            supportedStages: [AuthType.Password],
+        });
+
+        // @ts-ignore
+        ia.chooseStage();
+        expect(ia.getChosenFlow()?.stages).toEqual([AuthType.Password]);
+    });
+
+    it("should fire stateUpdated callback with error when a request fails", async () => {
+        const doRequest = jest.fn();
+        const stateUpdated = jest.fn();
+
+        const ia = new InteractiveAuth({
+            matrixClient: getFakeClient(),
+            doRequest: doRequest,
+            stateUpdated: stateUpdated,
+            requestEmailToken: jest.fn(),
+            authData: {
+                session: "sessionId",
+                flows: [{ stages: [AuthType.Password] }],
+                params: {
+                    [AuthType.Password]: { param: "aa" },
+                },
+            },
+        });
+
+        // StateUpdated should be called. We call submitAuthDict() to trigger a request ...
+        let firstTime = true;
+        stateUpdated.mockImplementation((stage) => {
+            expect(stage).toEqual(AuthType.Password);
+            // Only trigger the request the first time, to avoid an infinite loop
+            if (firstTime) {
+                firstTime = false;
+                ia.submitAuthDict({
+                    type: AuthType.Password,
+                });
+            }
+        });
+
+        // .. which which we then reject, so we can test the behaviour in that case.
+        doRequest.mockRejectedValue(new MatrixError({ errcode: "M_UNKNOWN", error: "This is an error" }));
+
+        await Promise.allSettled([ia.attemptAuth()]);
+        expect(stateUpdated).toHaveBeenCalledWith("m.login.password", {
+            errcode: "M_UNKNOWN",
+            error: "This is an error",
+        });
+    });
 });
@@ -1,6 +1,15 @@
+import fetchMock from "fetch-mock-jest";
+
+import { ClientPrefix, MatrixClient } from "../../src";
 import { SSOAction } from "../../src/@types/auth";
 import { TestClient } from "../TestClient";

+function createExampleMatrixClient(): MatrixClient {
+    return new MatrixClient({
+        baseUrl: "https://example.com",
+    });
+}
+
 describe("Login request", function () {
    let client: TestClient;

@@ -57,3 +66,84 @@ describe("SSO login URL", function () {
        });
    });
 });
+
+describe("refreshToken", () => {
+    afterEach(() => {
+        fetchMock.mockReset();
+    });
+
+    it("requests the correctly-prefixed /refresh endpoint when server correctly accepts /v3", async () => {
+        const client = createExampleMatrixClient();
+
+        const response = {
+            access_token: "access_token",
+            refresh_token: "refresh_token",
+            expires_in_ms: 30000,
+        };
+
+        fetchMock.postOnce(client.http.getUrl("/refresh", undefined, ClientPrefix.V3).toString(), response);
+        fetchMock.postOnce(client.http.getUrl("/refresh", undefined, ClientPrefix.V1).toString(), () => {
+            throw new Error("/v1/refresh unexpectedly called");
+        });
+
+        const refreshResult = await client.refreshToken("initial_refresh_token");
+        expect(refreshResult).toEqual(response);
+    });
+
+    it("falls back to /v1 when server does not recognized /v3 refresh", async () => {
+        const client = createExampleMatrixClient();
+
+        const response = {
+            access_token: "access_token",
+            refresh_token: "refresh_token",
+            expires_in_ms: 30000,
+        };
+
+        fetchMock.postOnce(client.http.getUrl("/refresh", undefined, ClientPrefix.V3).toString(), {
+            status: 400,
+            body: { errcode: "M_UNRECOGNIZED" },
+        });
+        fetchMock.postOnce(client.http.getUrl("/refresh", undefined, ClientPrefix.V1).toString(), response);
+
+        const refreshResult = await client.refreshToken("initial_refresh_token");
+        expect(refreshResult).toEqual(response);
+    });
+
+    it("re-raises M_UNRECOGNIZED exceptions from /v1", async () => {
+        const client = createExampleMatrixClient();
+
+        fetchMock.postOnce(client.http.getUrl("/refresh", undefined, ClientPrefix.V3).toString(), {
+            status: 400,
+            body: { errcode: "M_UNRECOGNIZED" },
+        });
+        fetchMock.postOnce(client.http.getUrl("/refresh", undefined, ClientPrefix.V1).toString(), {
+            status: 400,
+            body: { errcode: "M_UNRECOGNIZED" },
+        });
+
+        await expect(client.refreshToken("initial_refresh_token")).rejects.toMatchObject({ errcode: "M_UNRECOGNIZED" });
+    });
+
+    it("re-raises non-M_UNRECOGNIZED exceptions from /v3", async () => {
+        const client = createExampleMatrixClient();
+
+        fetchMock.postOnce(client.http.getUrl("/refresh", undefined, ClientPrefix.V3).toString(), 429);
+        fetchMock.postOnce(client.http.getUrl("/refresh", undefined, ClientPrefix.V1).toString(), () => {
+            throw new Error("/v1/refresh unexpectedly called");
+        });
+
+        await expect(client.refreshToken("initial_refresh_token")).rejects.toMatchObject({ httpStatus: 429 });
+    });
+
+    it("re-raises non-M_UNRECOGNIZED exceptions from /v1", async () => {
+        const client = createExampleMatrixClient();
+
+        fetchMock.postOnce(client.http.getUrl("/refresh", undefined, ClientPrefix.V3).toString(), {
+            status: 400,
+            body: { errcode: "M_UNRECOGNIZED" },
+        });
+        fetchMock.postOnce(client.http.getUrl("/refresh", undefined, ClientPrefix.V1).toString(), 429);
+
+        await expect(client.refreshToken("initial_refresh_token")).rejects.toMatchObject({ httpStatus: 429 });
+    });
+});
@@ -28,7 +28,6 @@ import {
    UNSTABLE_MSC3088_ENABLED,
    UNSTABLE_MSC3088_PURPOSE,
    UNSTABLE_MSC3089_TREE_SUBTYPE,
-    MSC3912_RELATION_BASED_REDACTIONS_PROP,
 } from "../../src/@types/event";
 import { MEGOLM_ALGORITHM } from "../../src/crypto/olmlib";
 import { Crypto } from "../../src/crypto";
@@ -181,9 +180,7 @@ describe("MatrixClient", function () {
        data: SYNC_DATA,
    };

-    const unstableFeatures: Record<string, boolean> = {
-        "org.matrix.msc3440.stable": true,
-    };
+    let unstableFeatures: Record<string, boolean> = {};

    // items are popped off when processed and block if no items left.
    let httpLookups: HttpLookup[] = [];
@@ -204,7 +201,7 @@ describe("MatrixClient", function () {
        if (path === KEEP_ALIVE_PATH && acceptKeepalives) {
            return Promise.resolve({
                unstable_features: unstableFeatures,
-                versions: ["r0.6.0", "r0.6.1"],
+                versions: ["v1.1"],
            });
        }
        const next = httpLookups.shift();
@@ -342,6 +339,12 @@ describe("MatrixClient", function () {
        store.getClientOptions = jest.fn().mockReturnValue(Promise.resolve(null));
        store.storeClientOptions = jest.fn().mockReturnValue(Promise.resolve(null));
        store.isNewlyCreated = jest.fn().mockReturnValue(Promise.resolve(true));
+
+        // set unstableFeatures to a defined state before each test
+        unstableFeatures = {
+            "org.matrix.msc3440.stable": true,
+        };
+
        makeClient();

        // set reasonable working defaults
@@ -1373,10 +1376,10 @@ describe("MatrixClient", function () {
            await client.redactEvent(roomId, eventId, txnId, { reason });
        });

-        describe("when calling with with_relations", () => {
+        describe("when calling with 'with_rel_types'", () => {
            const eventId = "$event42:example.org";

-            it("should raise an error if server has no support for relation based redactions", async () => {
+            it("should raise an error if the server has no support for relation based redactions", async () => {
                // load supported features
                await client.getVersions();

@@ -1384,7 +1387,7 @@ describe("MatrixClient", function () {

                expect(() => {
                    client.redactEvent(roomId, eventId, txnId, {
-                        with_relations: [RelationType.Reference],
+                        with_rel_types: [RelationType.Reference],
                    });
                }).toThrow(
                    new Error(
@@ -1394,34 +1397,30 @@ describe("MatrixClient", function () {
                );
            });

-            describe("and the server supports relation based redactions (unstable)", () => {
-                beforeEach(async () => {
-                    unstableFeatures["org.matrix.msc3912"] = true;
-                    // load supported features
-                    await client.getVersions();
-                });
+            it("and the server has unstable support for relation based redactions, it should send 'org.matrix.msc3912.with_relations' in the request body", async () => {
+                unstableFeatures["org.matrix.msc3912"] = true;
+                // load supported features
+                await client.getVersions();

-                it("should send with_relations in the request body", async () => {
-                    const txnId = client.makeTxnId();
+                const txnId = client.makeTxnId();

-                    httpLookups = [
-                        {
-                            method: "PUT",
-                            path:
-                                `/rooms/${encodeURIComponent(roomId)}/redact/${encodeURIComponent(eventId)}` +
-                                `/${encodeURIComponent(txnId)}`,
-                            expectBody: {
-                                reason: "redaction test",
-                                [MSC3912_RELATION_BASED_REDACTIONS_PROP.unstable!]: [RelationType.Reference],
-                            },
-                            data: { event_id: eventId },
+                httpLookups = [
+                    {
+                        method: "PUT",
+                        path:
+                            `/rooms/${encodeURIComponent(roomId)}/redact/${encodeURIComponent(eventId)}` +
+                            `/${encodeURIComponent(txnId)}`,
+                        expectBody: {
+                            reason: "redaction test",
+                            ["org.matrix.msc3912.with_relations"]: ["m.reference"],
                        },
-                    ];
+                        data: { event_id: eventId },
+                    },
+                ];

-                    await client.redactEvent(roomId, eventId, txnId, {
-                        reason: "redaction test",
-                        with_relations: [RelationType.Reference],
-                    });
+                await client.redactEvent(roomId, eventId, txnId, {
+                    reason: "redaction test",
+                    with_rel_types: [RelationType.Reference],
                });
            });
        });
@@ -2267,7 +2266,6 @@ describe("MatrixClient", function () {
        function roomCreateEvent(newRoomId: string, predecessorRoomId: string): MatrixEvent {
            return new MatrixEvent({
                content: {
-                    "creator": "@daryl:alexandria.example.com",
                    "m.federate": true,
                    "predecessor": {
                        event_id: "id_of_last_event",
@@ -0,0 +1,139 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { MatrixEvent } from "../../../src";
+import { CallMembership, CallMembershipData } from "../../../src/matrixrtc/CallMembership";
+
+const membershipTemplate: CallMembershipData = {
+    call_id: "",
+    scope: "m.room",
+    application: "m.call",
+    device_id: "AAAAAAA",
+    expires: 5000,
+};
+
+function makeMockEvent(originTs = 0): MatrixEvent {
+    return {
+        getTs: jest.fn().mockReturnValue(originTs),
+        sender: {
+            userId: "@alice:example.org",
+        },
+    } as unknown as MatrixEvent;
+}
+
+describe("CallMembership", () => {
+    it("rejects membership with no expiry", () => {
+        expect(() => {
+            new CallMembership(makeMockEvent(), Object.assign({}, membershipTemplate, { expires: undefined }));
+        }).toThrow();
+    });
+
+    it("rejects membership with no device_id", () => {
+        expect(() => {
+            new CallMembership(makeMockEvent(), Object.assign({}, membershipTemplate, { device_id: undefined }));
+        }).toThrow();
+    });
+
+    it("rejects membership with no call_id", () => {
+        expect(() => {
+            new CallMembership(makeMockEvent(), Object.assign({}, membershipTemplate, { call_id: undefined }));
+        }).toThrow();
+    });
+
+    it("rejects membership with no scope", () => {
+        expect(() => {
+            new CallMembership(makeMockEvent(), Object.assign({}, membershipTemplate, { scope: undefined }));
+        }).toThrow();
+    });
+
+    it("uses event timestamp if no created_ts", () => {
+        const membership = new CallMembership(makeMockEvent(12345), membershipTemplate);
+        expect(membership.createdTs()).toEqual(12345);
+    });
+
+    it("uses created_ts if present", () => {
+        const membership = new CallMembership(
+            makeMockEvent(12345),
+            Object.assign({}, membershipTemplate, { created_ts: 67890 }),
+        );
+        expect(membership.createdTs()).toEqual(67890);
+    });
+
+    it("computes absolute expiry time", () => {
+        const membership = new CallMembership(makeMockEvent(1000), membershipTemplate);
+        expect(membership.getAbsoluteExpiry()).toEqual(5000 + 1000);
+    });
+
+    it("considers memberships unexpired if local age low enough", () => {
+        const fakeEvent = makeMockEvent(1000);
+        fakeEvent.getLocalAge = jest.fn().mockReturnValue(3000);
+        const membership = new CallMembership(fakeEvent, membershipTemplate);
+        expect(membership.isExpired()).toEqual(false);
+    });
+
+    it("considers memberships expired when local age large", () => {
+        const fakeEvent = makeMockEvent(1000);
+        fakeEvent.getLocalAge = jest.fn().mockReturnValue(6000);
+        const membership = new CallMembership(fakeEvent, membershipTemplate);
+        expect(membership.isExpired()).toEqual(true);
+    });
+
+    it("returns active foci", () => {
+        const fakeEvent = makeMockEvent();
+        const mockFocus = { type: "this_is_a_mock_focus" };
+        const membership = new CallMembership(
+            fakeEvent,
+            Object.assign({}, membershipTemplate, { foci_active: [mockFocus] }),
+        );
+        expect(membership.getActiveFoci()).toEqual([mockFocus]);
+    });
+
+    describe("expiry calculation", () => {
+        let fakeEvent: MatrixEvent;
+        let membership: CallMembership;
+
+        beforeEach(() => {
+            // server origin timestamp for this event is 1000
+            fakeEvent = makeMockEvent(1000);
+            // our clock would have been at 2000 at the creation time (our clock at event receive time - age)
+            // (ie. the local clock is 1 second ahead of the servers' clocks)
+            fakeEvent.localTimestamp = 2000;
+
+            // for simplicity's sake, we say that the event's age is zero
+            fakeEvent.getLocalAge = jest.fn().mockReturnValue(0);
+
+            membership = new CallMembership(fakeEvent!, membershipTemplate);
+
+            jest.useFakeTimers();
+        });
+
+        afterEach(() => {
+            jest.useRealTimers();
+        });
+
+        it("converts expiry time into local clock", () => {
+            // for sanity's sake, make sure the server-relative expiry time is what we expect
+            expect(membership.getAbsoluteExpiry()).toEqual(6000);
+            // therefore the expiry time converted to our clock should be 1 second later
+            expect(membership.getLocalExpiry()).toEqual(7000);
+        });
+
+        it("calculates time until expiry", () => {
+            jest.setSystemTime(2000);
+            expect(membership.getMsUntilExpiry()).toEqual(5000);
+        });
+    });
+});
@@ -0,0 +1,405 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { EventTimeline, EventType, MatrixClient, Room } from "../../../src";
+import { CallMembershipData } from "../../../src/matrixrtc/CallMembership";
+import { MatrixRTCSession, MatrixRTCSessionEvent } from "../../../src/matrixrtc/MatrixRTCSession";
+import { randomString } from "../../../src/randomstring";
+import { makeMockRoom, mockRTCEvent } from "./mocks";
+
+const membershipTemplate: CallMembershipData = {
+    call_id: "",
+    scope: "m.room",
+    application: "m.call",
+    device_id: "AAAAAAA",
+    expires: 60 * 60 * 1000,
+};
+
+const mockFocus = { type: "mock" };
+
+describe("MatrixRTCSession", () => {
+    let client: MatrixClient;
+    let sess: MatrixRTCSession | undefined;
+
+    beforeEach(() => {
+        client = new MatrixClient({ baseUrl: "base_url" });
+        client.getUserId = jest.fn().mockReturnValue("@alice:example.org");
+        client.getDeviceId = jest.fn().mockReturnValue("AAAAAAA");
+    });
+
+    afterEach(() => {
+        client.stopClient();
+        client.matrixRTC.stop();
+        if (sess) sess.stop();
+        sess = undefined;
+    });
+
+    it("Creates a room-scoped session from room state", () => {
+        const mockRoom = makeMockRoom([membershipTemplate]);
+
+        sess = MatrixRTCSession.roomSessionForRoom(client, mockRoom);
+        expect(sess?.memberships.length).toEqual(1);
+        expect(sess?.memberships[0].callId).toEqual("");
+        expect(sess?.memberships[0].scope).toEqual("m.room");
+        expect(sess?.memberships[0].application).toEqual("m.call");
+        expect(sess?.memberships[0].deviceId).toEqual("AAAAAAA");
+        expect(sess?.memberships[0].isExpired()).toEqual(false);
+    });
+
+    it("ignores expired memberships events", () => {
+        const expiredMembership = Object.assign({}, membershipTemplate);
+        expiredMembership.expires = 1000;
+        expiredMembership.device_id = "EXPIRED";
+        const mockRoom = makeMockRoom([membershipTemplate, expiredMembership], () => 10000);
+
+        sess = MatrixRTCSession.roomSessionForRoom(client, mockRoom);
+        expect(sess?.memberships.length).toEqual(1);
+        expect(sess?.memberships[0].deviceId).toEqual("AAAAAAA");
+    });
+
+    it("honours created_ts", () => {
+        const expiredMembership = Object.assign({}, membershipTemplate);
+        expiredMembership.created_ts = 500;
+        expiredMembership.expires = 1000;
+        const mockRoom = makeMockRoom([expiredMembership]);
+        sess = MatrixRTCSession.roomSessionForRoom(client, mockRoom);
+        expect(sess?.memberships[0].getAbsoluteExpiry()).toEqual(1500);
+    });
+
+    it("returns empty session if no membership events are present", () => {
+        const mockRoom = makeMockRoom([]);
+        sess = MatrixRTCSession.roomSessionForRoom(client, mockRoom);
+        expect(sess?.memberships).toHaveLength(0);
+    });
+
+    it("safely ignores events with no memberships section", () => {
+        const mockRoom = {
+            roomId: randomString(8),
+            getLiveTimeline: jest.fn().mockReturnValue({
+                getState: jest.fn().mockReturnValue({
+                    getStateEvents: (_type: string, _stateKey: string) => [
+                        {
+                            getType: jest.fn().mockReturnValue(EventType.GroupCallMemberPrefix),
+                            getContent: jest.fn().mockReturnValue({}),
+                            getSender: jest.fn().mockReturnValue("@mock:user.example"),
+                            getTs: jest.fn().mockReturnValue(1000),
+                            getLocalAge: jest.fn().mockReturnValue(0),
+                        },
+                    ],
+                }),
+            }),
+        };
+        sess = MatrixRTCSession.roomSessionForRoom(client, mockRoom as unknown as Room);
+        expect(sess.memberships).toHaveLength(0);
+    });
+
+    it("safely ignores events with junk memberships section", () => {
+        const mockRoom = {
+            roomId: randomString(8),
+            getLiveTimeline: jest.fn().mockReturnValue({
+                getState: jest.fn().mockReturnValue({
+                    getStateEvents: (_type: string, _stateKey: string) => [
+                        {
+                            getType: jest.fn().mockReturnValue(EventType.GroupCallMemberPrefix),
+                            getContent: jest.fn().mockReturnValue({ memberships: "i am a fish" }),
+                            getSender: jest.fn().mockReturnValue("@mock:user.example"),
+                            getTs: jest.fn().mockReturnValue(1000),
+                            getLocalAge: jest.fn().mockReturnValue(0),
+                        },
+                    ],
+                }),
+            }),
+        };
+        sess = MatrixRTCSession.roomSessionForRoom(client, mockRoom as unknown as Room);
+        expect(sess.memberships).toHaveLength(0);
+    });
+
+    it("ignores memberships with no expires_ts", () => {
+        const expiredMembership = Object.assign({}, membershipTemplate);
+        (expiredMembership.expires as number | undefined) = undefined;
+        const mockRoom = makeMockRoom([expiredMembership]);
+        sess = MatrixRTCSession.roomSessionForRoom(client, mockRoom);
+        expect(sess.memberships).toHaveLength(0);
+    });
+
+    it("ignores memberships with no device_id", () => {
+        const testMembership = Object.assign({}, membershipTemplate);
+        (testMembership.device_id as string | undefined) = undefined;
+        const mockRoom = makeMockRoom([testMembership]);
+        const sess = MatrixRTCSession.roomSessionForRoom(client, mockRoom);
+        expect(sess.memberships).toHaveLength(0);
+    });
+
+    it("ignores memberships with no call_id", () => {
+        const testMembership = Object.assign({}, membershipTemplate);
+        (testMembership.call_id as string | undefined) = undefined;
+        const mockRoom = makeMockRoom([testMembership]);
+        sess = MatrixRTCSession.roomSessionForRoom(client, mockRoom);
+        expect(sess.memberships).toHaveLength(0);
+    });
+
+    it("ignores memberships with no scope", () => {
+        const testMembership = Object.assign({}, membershipTemplate);
+        (testMembership.scope as string | undefined) = undefined;
+        const mockRoom = makeMockRoom([testMembership]);
+        sess = MatrixRTCSession.roomSessionForRoom(client, mockRoom);
+        expect(sess.memberships).toHaveLength(0);
+    });
+
+    it("ignores anything that's not a room-scoped call (for now)", () => {
+        const testMembership = Object.assign({}, membershipTemplate);
+        testMembership.scope = "m.user";
+        const mockRoom = makeMockRoom([testMembership]);
+        sess = MatrixRTCSession.roomSessionForRoom(client, mockRoom);
+        expect(sess.memberships).toHaveLength(0);
+    });
+
+    describe("getOldestMembership", () => {
+        it("returns the oldest membership event", () => {
+            const mockRoom = makeMockRoom([
+                Object.assign({}, membershipTemplate, { device_id: "foo", created_ts: 3000 }),
+                Object.assign({}, membershipTemplate, { device_id: "old", created_ts: 1000 }),
+                Object.assign({}, membershipTemplate, { device_id: "bar", created_ts: 2000 }),
+            ]);
+
+            sess = MatrixRTCSession.roomSessionForRoom(client, mockRoom);
+            expect(sess.getOldestMembership()!.deviceId).toEqual("old");
+        });
+    });
+
+    describe("joining", () => {
+        let mockRoom: Room;
+
+        beforeEach(() => {
+            mockRoom = makeMockRoom([]);
+            sess = MatrixRTCSession.roomSessionForRoom(client, mockRoom);
+        });
+
+        afterEach(() => {
+            // stop the timers
+            sess!.leaveRoomSession();
+        });
+
+        it("starts un-joined", () => {
+            expect(sess!.isJoined()).toEqual(false);
+        });
+
+        it("shows joined once join is called", () => {
+            sess!.joinRoomSession([mockFocus]);
+            expect(sess!.isJoined()).toEqual(true);
+        });
+
+        it("sends a membership event when joining a call", () => {
+            client.sendStateEvent = jest.fn();
+
+            sess!.joinRoomSession([mockFocus]);
+
+            expect(client.sendStateEvent).toHaveBeenCalledWith(
+                mockRoom!.roomId,
+                EventType.GroupCallMemberPrefix,
+                {
+                    memberships: [
+                        {
+                            application: "m.call",
+                            scope: "m.room",
+                            call_id: "",
+                            device_id: "AAAAAAA",
+                            expires: 3600000,
+                            foci_active: [{ type: "mock" }],
+                        },
+                    ],
+                },
+                "@alice:example.org",
+            );
+        });
+
+        it("does nothing if join called when already joined", () => {
+            const sendStateEventMock = jest.fn();
+            client.sendStateEvent = sendStateEventMock;
+
+            sess!.joinRoomSession([mockFocus]);
+
+            expect(client.sendStateEvent).toHaveBeenCalledTimes(1);
+
+            sess!.joinRoomSession([mockFocus]);
+            expect(client.sendStateEvent).toHaveBeenCalledTimes(1);
+        });
+
+        it("renews membership event before expiry time", async () => {
+            jest.useFakeTimers();
+            let resolveFn: ((_roomId: string, _type: string, val: Record<string, any>) => void) | undefined;
+
+            const eventSentPromise = new Promise<Record<string, any>>((r) => {
+                resolveFn = (_roomId: string, _type: string, val: Record<string, any>) => {
+                    r(val);
+                };
+            });
+            try {
+                const sendStateEventMock = jest.fn().mockImplementation(resolveFn);
+                client.sendStateEvent = sendStateEventMock;
+
+                sess!.joinRoomSession([mockFocus]);
+
+                const eventContent = await eventSentPromise;
+
+                // definitely should have renewed by 1 second before the expiry!
+                const timeElapsed = 60 * 60 * 1000 - 1000;
+                mockRoom.getLiveTimeline().getState(EventTimeline.FORWARDS)!.getStateEvents = jest
+                    .fn()
+                    .mockReturnValue(mockRTCEvent(eventContent.memberships, mockRoom.roomId, () => timeElapsed));
+
+                const eventReSentPromise = new Promise<Record<string, any>>((r) => {
+                    resolveFn = (_roomId: string, _type: string, val: Record<string, any>) => {
+                        r(val);
+                    };
+                });
+
+                sendStateEventMock.mockReset().mockImplementation(resolveFn);
+
+                jest.setSystemTime(Date.now() + timeElapsed);
+                jest.advanceTimersByTime(timeElapsed);
+                await eventReSentPromise;
+
+                expect(sendStateEventMock).toHaveBeenCalledWith(
+                    mockRoom.roomId,
+                    EventType.GroupCallMemberPrefix,
+                    {
+                        memberships: [
+                            {
+                                application: "m.call",
+                                scope: "m.room",
+                                call_id: "",
+                                device_id: "AAAAAAA",
+                                expires: 3600000 * 2,
+                                foci_active: [{ type: "mock" }],
+                                created_ts: 1000,
+                            },
+                        ],
+                    },
+                    "@alice:example.org",
+                );
+            } finally {
+                jest.useRealTimers();
+            }
+        });
+    });
+
+    it("emits an event at the time a membership event expires", () => {
+        jest.useFakeTimers();
+        try {
+            let eventAge = 0;
+
+            const membership = Object.assign({}, membershipTemplate);
+            const mockRoom = makeMockRoom([membership], () => eventAge);
+
+            sess = MatrixRTCSession.roomSessionForRoom(client, mockRoom);
+            const membershipObject = sess.memberships[0];
+
+            const onMembershipsChanged = jest.fn();
+            sess.on(MatrixRTCSessionEvent.MembershipsChanged, onMembershipsChanged);
+
+            eventAge = 61 * 1000 * 1000;
+            jest.advanceTimersByTime(61 * 1000 * 1000);
+
+            expect(onMembershipsChanged).toHaveBeenCalledWith([membershipObject], []);
+            expect(sess?.memberships.length).toEqual(0);
+        } finally {
+            jest.useRealTimers();
+        }
+    });
+
+    it("prunes expired memberships on update", () => {
+        client.sendStateEvent = jest.fn();
+
+        let eventAge = 0;
+
+        const mockRoom = makeMockRoom(
+            [
+                Object.assign({}, membershipTemplate, {
+                    device_id: "OTHERDEVICE",
+                    expires: 1000,
+                }),
+            ],
+            () => eventAge,
+        );
+        sess = MatrixRTCSession.roomSessionForRoom(client, mockRoom);
+
+        // sanity check
+        expect(sess.memberships).toHaveLength(1);
+        expect(sess.memberships[0].deviceId).toEqual("OTHERDEVICE");
+
+        eventAge = 10000;
+
+        sess.joinRoomSession([mockFocus]);
+
+        expect(client.sendStateEvent).toHaveBeenCalledWith(
+            mockRoom!.roomId,
+            EventType.GroupCallMemberPrefix,
+            {
+                memberships: [
+                    {
+                        application: "m.call",
+                        scope: "m.room",
+                        call_id: "",
+                        device_id: "AAAAAAA",
+                        expires: 3600000,
+                        foci_active: [mockFocus],
+                    },
+                ],
+            },
+            "@alice:example.org",
+        );
+    });
+
+    it("fills in created_ts for other memberships on update", () => {
+        client.sendStateEvent = jest.fn();
+
+        const mockRoom = makeMockRoom([
+            Object.assign({}, membershipTemplate, {
+                device_id: "OTHERDEVICE",
+            }),
+        ]);
+        sess = MatrixRTCSession.roomSessionForRoom(client, mockRoom);
+
+        sess.joinRoomSession([mockFocus]);
+
+        expect(client.sendStateEvent).toHaveBeenCalledWith(
+            mockRoom!.roomId,
+            EventType.GroupCallMemberPrefix,
+            {
+                memberships: [
+                    {
+                        application: "m.call",
+                        scope: "m.room",
+                        call_id: "",
+                        device_id: "OTHERDEVICE",
+                        expires: 3600000,
+                        created_ts: 1000,
+                    },
+                    {
+                        application: "m.call",
+                        scope: "m.room",
+                        call_id: "",
+                        device_id: "AAAAAAA",
+                        expires: 3600000,
+                        foci_active: [mockFocus],
+                    },
+                ],
+            },
+            "@alice:example.org",
+        );
+    });
+});
@@ -0,0 +1,80 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { ClientEvent, EventTimeline, MatrixClient } from "../../../src";
+import { RoomStateEvent } from "../../../src/models/room-state";
+import { CallMembershipData } from "../../../src/matrixrtc/CallMembership";
+import { MatrixRTCSessionManagerEvents } from "../../../src/matrixrtc/MatrixRTCSessionManager";
+import { makeMockRoom } from "./mocks";
+
+const membershipTemplate: CallMembershipData = {
+    call_id: "",
+    scope: "m.room",
+    application: "m.call",
+    device_id: "AAAAAAA",
+    expires: 60 * 60 * 1000,
+};
+
+describe("MatrixRTCSessionManager", () => {
+    let client: MatrixClient;
+
+    beforeEach(async () => {
+        client = new MatrixClient({ baseUrl: "base_url" });
+        client.matrixRTC.start();
+    });
+
+    afterEach(() => {
+        client.stopClient();
+        client.matrixRTC.stop();
+    });
+
+    it("Fires event when session starts", () => {
+        const onStarted = jest.fn();
+        client.matrixRTC.on(MatrixRTCSessionManagerEvents.SessionStarted, onStarted);
+
+        try {
+            const room1 = makeMockRoom([membershipTemplate]);
+            jest.spyOn(client, "getRooms").mockReturnValue([room1]);
+
+            client.emit(ClientEvent.Room, room1);
+            expect(onStarted).toHaveBeenCalledWith(room1.roomId, client.matrixRTC.getActiveRoomSession(room1));
+        } finally {
+            client.matrixRTC.off(MatrixRTCSessionManagerEvents.SessionStarted, onStarted);
+        }
+    });
+
+    it("Fires event when session ends", () => {
+        const onEnded = jest.fn();
+        client.matrixRTC.on(MatrixRTCSessionManagerEvents.SessionEnded, onEnded);
+
+        const memberships = [membershipTemplate];
+
+        const room1 = makeMockRoom(memberships);
+        jest.spyOn(client, "getRooms").mockReturnValue([room1]);
+        jest.spyOn(client, "getRoom").mockReturnValue(room1);
+
+        client.emit(ClientEvent.Room, room1);
+
+        memberships.splice(0, 1);
+
+        const roomState = room1.getLiveTimeline().getState(EventTimeline.FORWARDS)!;
+        const membEvent = roomState.getStateEvents("")[0];
+
+        client.emit(RoomStateEvent.Events, membEvent, roomState, null);
+
+        expect(onEnded).toHaveBeenCalledWith(room1.roomId, client.matrixRTC.getActiveRoomSession(room1));
+    });
+});
@@ -0,0 +1,66 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { EventType, MatrixEvent, Room } from "../../../src";
+import { CallMembershipData } from "../../../src/matrixrtc/CallMembership";
+import { randomString } from "../../../src/randomstring";
+
+export function makeMockRoom(
+    memberships: CallMembershipData[],
+    getLocalAge: (() => number) | undefined = undefined,
+): Room {
+    const roomId = randomString(8);
+    return {
+        roomId: roomId,
+        getLiveTimeline: jest.fn().mockReturnValue({
+            getState: jest.fn().mockReturnValue(makeMockRoomState(memberships, roomId, getLocalAge)),
+        }),
+    } as unknown as Room;
+}
+
+function makeMockRoomState(memberships: CallMembershipData[], roomId: string, getLocalAge: (() => number) | undefined) {
+    return {
+        getStateEvents: (_: string, stateKey: string) => {
+            const event = mockRTCEvent(memberships, roomId, getLocalAge);
+
+            if (stateKey !== undefined) return event;
+            return [event];
+        },
+    };
+}
+
+export function mockRTCEvent(
+    memberships: CallMembershipData[],
+    roomId: string,
+    getLocalAge: (() => number) | undefined,
+): MatrixEvent {
+    const getLocalAgeFn = getLocalAge ?? (() => 10);
+
+    return {
+        getType: jest.fn().mockReturnValue(EventType.GroupCallMemberPrefix),
+        getContent: jest.fn().mockReturnValue({
+            memberships: memberships,
+        }),
+        getSender: jest.fn().mockReturnValue("@mock:user.example"),
+        getTs: jest.fn().mockReturnValue(1000),
+        getLocalAge: getLocalAgeFn,
+        localTimestamp: Date.now(),
+        getRoomId: jest.fn().mockReturnValue(roomId),
+        sender: {
+            userId: "@mock:user.example",
+        },
+    } as unknown as MatrixEvent;
+}
@@ -308,4 +308,25 @@ describe("MatrixEvent", () => {
            });
        });
    });
+
+    it("should ignore thread relation on state events", async () => {
+        const stateEvent = new MatrixEvent({
+            event_id: "$event_id",
+            type: "some_state_event",
+            content: {
+                "foo": "bar",
+                "m.relates_to": {
+                    "event_id": "$thread_id",
+                    "m.in_reply_to": {
+                        event_id: "$thread_id",
+                    },
+                    "rel_type": "m.thread",
+                },
+            },
+            state_key: "",
+        });
+
+        expect(stateEvent.isState()).toBeTruthy();
+        expect(stateEvent.threadRootId).toBeUndefined();
+    });
 });
@@ -14,17 +14,20 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */

+import { mocked } from "jest-mock";
+
 import { MatrixClient, PendingEventOrdering } from "../../../src/client";
-import { Room } from "../../../src/models/room";
-import { Thread, THREAD_RELATION_TYPE, ThreadEvent } from "../../../src/models/thread";
-import { mkThread } from "../../test-utils/thread";
+import { Room, RoomEvent } from "../../../src/models/room";
+import { FeatureSupport, Thread, THREAD_RELATION_TYPE, ThreadEvent } from "../../../src/models/thread";
+import { makeThreadEvent, mkThread } from "../../test-utils/thread";
 import { TestClient } from "../../TestClient";
-import { emitPromise, mkMessage, mock } from "../../test-utils/test-utils";
-import { Direction, EventStatus, MatrixEvent } from "../../../src";
+import { emitPromise, mkEdit, mkMessage, mkReaction, mock } from "../../test-utils/test-utils";
+import { Direction, EventStatus, EventType, MatrixEvent } from "../../../src";
 import { ReceiptType } from "../../../src/@types/read_receipts";
 import { getMockClientWithEventEmitter, mockClientMethodsUser } from "../../test-utils/client";
 import { ReEmitter } from "../../../src/ReEmitter";
 import { Feature, ServerSupport } from "../../../src/feature";
+import { eventMapperFor } from "../../../src/event-mapper";

 describe("Thread", () => {
    describe("constructor", () => {
@@ -40,6 +43,7 @@ describe("Thread", () => {
        const myUserId = "@bob:example.org";
        const testClient = new TestClient(myUserId, "DEVICE", "ACCESS_TOKEN", undefined, { timelineSupport: false });
        const client = testClient.client;
+        client.supportsThreads = jest.fn().mockReturnValue(true);
        const room = new Room("123", client, myUserId, {
            pendingEventOrdering: PendingEventOrdering.Detached,
        });
@@ -297,6 +301,7 @@ describe("Thread", () => {
                timelineSupport: false,
            });
            const client = testClient.client;
+            client.supportsThreads = jest.fn().mockReturnValue(true);
            const room = new Room("123", client, myUserId, {
                pendingEventOrdering: PendingEventOrdering.Detached,
            });
@@ -351,6 +356,7 @@ describe("Thread", () => {
                timelineSupport: false,
            });
            const client = testClient.client;
+            client.supportsThreads = jest.fn().mockReturnValue(true);
            const room = new Room("123", client, myUserId, {
                pendingEventOrdering: PendingEventOrdering.Detached,
            });
@@ -402,6 +408,7 @@ describe("Thread", () => {
                timelineSupport: false,
            });
            const client = testClient.client;
+            client.supportsThreads = jest.fn().mockReturnValue(true);
            const room = new Room("123", client, myUserId, {
                pendingEventOrdering: PendingEventOrdering.Detached,
            });
@@ -424,4 +431,301 @@ describe("Thread", () => {
            expect(mock).toHaveBeenCalledWith("b1", "f1");
        });
    });
+
+    describe("insertEventIntoTimeline", () => {
+        it("Inserts a reaction in timestamp order", () => {
+            // Assumption: no server side support because if we have it, events
+            // can only be added to the timeline after the thread has been
+            // initialised, and we are not properly initialising it here.
+            expect(Thread.hasServerSideSupport).toBe(FeatureSupport.None);
+
+            const client = createClientWithEventMapper();
+            const userId = "user1";
+            const room = new Room("room1", client, userId);
+
+            // Given a thread with a root plus 5 messages
+            const { thread, events } = mkThread({
+                room,
+                client,
+                authorId: userId,
+                participantUserIds: ["@bob:hs", "@chia:hs", "@dv:hs"],
+                length: 6,
+                ts: 100, // Events will be at ts 100, 101, 102, 103, 104 and 105
+            });
+
+            // When we insert a reaction to the second thread message
+            const replyEvent = mkReaction(events[2], client, userId, room.roomId, 104);
+            thread.insertEventIntoTimeline(replyEvent);
+
+            // Then the reaction is inserted based on its timestamp
+            expect(thread.events.map((ev) => ev.getId())).toEqual([
+                events[0].getId(),
+                events[1].getId(),
+                events[2].getId(),
+                events[3].getId(),
+                events[4].getId(),
+                replyEvent.getId(),
+                events[5].getId(),
+            ]);
+        });
+
+        describe("Without relations recursion support", () => {
+            it("Creates a local echo receipt for new events", async () => {
+                // Assumption: no server side support because if we have it, events
+                // can only be added to the timeline after the thread has been
+                // initialised, and we are not properly initialising it here.
+                expect(Thread.hasServerSideSupport).toBe(FeatureSupport.None);
+
+                // Given a client without relations recursion support
+                const client = createClientWithEventMapper();
+
+                // And a thread with an added event (with later timestamp)
+                const userId = "user1";
+                const { thread, message } = await createThreadAndEvent(client, 1, 100, userId);
+
+                // Then a receipt was added to the thread
+                const receipt = thread.getReadReceiptForUserId(userId);
+                expect(receipt).toBeTruthy();
+                expect(receipt?.eventId).toEqual(message.getId());
+                expect(receipt?.data.ts).toEqual(100);
+                expect(receipt?.data.thread_id).toEqual(thread.id);
+
+                // (And the receipt was synthetic)
+                expect(thread.getReadReceiptForUserId(userId, true)).toBeNull();
+            });
+
+            it("Doesn't create a local echo receipt for events before an existing receipt", async () => {
+                // Assumption: no server side support because if we have it, events
+                // can only be added to the timeline after the thread has been
+                // initialised, and we are not properly initialising it here.
+                expect(Thread.hasServerSideSupport).toBe(FeatureSupport.None);
+
+                // Given a client without relations recursion support
+                const client = createClientWithEventMapper();
+
+                // And a thread with an added event with a lower timestamp than its other events
+                const userId = "user1";
+                const { thread } = await createThreadAndEvent(client, 200, 100, userId);
+
+                // Then no receipt was added to the thread (the receipt is still
+                // for the thread root). This happens because since we have no
+                // recursive relations support, we know that sometimes events
+                // appear out of order, so we have to check their timestamps as
+                // a guess of the correct order.
+                expect(thread.getReadReceiptForUserId(userId)?.eventId).toEqual(thread.rootEvent?.getId());
+            });
+        });
+
+        describe("With relations recursion support", () => {
+            it("Creates a local echo receipt for new events", async () => {
+                // Assumption: no server side support because if we have it, events
+                // can only be added to the timeline after the thread has been
+                // initialised, and we are not properly initialising it here.
+                expect(Thread.hasServerSideSupport).toBe(FeatureSupport.None);
+
+                // Given a client WITH relations recursion support
+                const client = createClientWithEventMapper(
+                    new Map([[Feature.RelationsRecursion, ServerSupport.Stable]]),
+                );
+
+                // And a thread with an added event (with later timestamp)
+                const userId = "user1";
+                const { thread, message } = await createThreadAndEvent(client, 1, 100, userId);
+
+                // Then a receipt was added to the thread
+                const receipt = thread.getReadReceiptForUserId(userId);
+                expect(receipt?.eventId).toEqual(message.getId());
+            });
+
+            it("Creates a local echo receipt even for events BEFORE an existing receipt", async () => {
+                // Assumption: no server side support because if we have it, events
+                // can only be added to the timeline after the thread has been
+                // initialised, and we are not properly initialising it here.
+                expect(Thread.hasServerSideSupport).toBe(FeatureSupport.None);
+
+                // Given a client WITH relations recursion support
+                const client = createClientWithEventMapper(
+                    new Map([[Feature.RelationsRecursion, ServerSupport.Stable]]),
+                );
+
+                // And a thread with an added event with a lower timestamp than its other events
+                const userId = "user1";
+                const { thread, message } = await createThreadAndEvent(client, 200, 100, userId);
+
+                // Then a receipt was added to the thread, because relations
+                // recursion is available, so we trust the server to have
+                // provided us with events in the right order.
+                const receipt = thread.getReadReceiptForUserId(userId);
+                expect(receipt?.eventId).toEqual(message.getId());
+            });
+        });
+
+        async function createThreadAndEvent(
+            client: MatrixClient,
+            rootTs: number,
+            eventTs: number,
+            userId: string,
+        ): Promise<{ thread: Thread; message: MatrixEvent }> {
+            const room = new Room("room1", client, userId);
+
+            // Given a thread
+            const { thread } = mkThread({
+                room,
+                client,
+                authorId: userId,
+                participantUserIds: [],
+                ts: rootTs,
+            });
+            // Sanity: the current receipt is for the thread root
+            expect(thread.getReadReceiptForUserId(userId)?.eventId).toEqual(thread.rootEvent?.getId());
+
+            const awaitTimelineEvent = new Promise<void>((res) => thread.on(RoomEvent.Timeline, () => res()));
+
+            // When we add a message that is before the latest receipt
+            const message = makeThreadEvent({
+                event: true,
+                rootEventId: thread.id,
+                replyToEventId: thread.id,
+                user: userId,
+                room: room.roomId,
+                ts: eventTs,
+            });
+            await thread.addEvent(message, false, true);
+            await awaitTimelineEvent;
+
+            return { thread, message };
+        }
+
+        function createClientWithEventMapper(canSupport: Map<Feature, ServerSupport> = new Map()): MatrixClient {
+            const client = mock(MatrixClient, "MatrixClient");
+            client.reEmitter = mock(ReEmitter, "ReEmitter");
+            client.canSupport = canSupport;
+            jest.spyOn(client, "getEventMapper").mockReturnValue(eventMapperFor(client, {}));
+            mocked(client.supportsThreads).mockReturnValue(true);
+            return client;
+        }
+    });
+
+    describe("Editing events", () => {
+        describe("Given server support for threads", () => {
+            let previousThreadHasServerSideSupport: FeatureSupport;
+
+            beforeAll(() => {
+                previousThreadHasServerSideSupport = Thread.hasServerSideSupport;
+                Thread.hasServerSideSupport = FeatureSupport.Stable;
+            });
+
+            afterAll(() => {
+                Thread.hasServerSideSupport = previousThreadHasServerSideSupport;
+            });
+
+            it("Adds edits from sync to the thread timeline and applies them", async () => {
+                // Given a thread
+                const client = createClient();
+                const user = "@alice:matrix.org";
+                const room = "!room:z";
+                const thread = await createThread(client, user, room);
+
+                // When a message and an edit are added to the thread
+                const messageToEdit = createThreadMessage(thread.id, user, room, "Thread reply");
+                const editEvent = mkEdit(messageToEdit, client, user, room, "edit");
+                await thread.addEvent(messageToEdit, false);
+                await thread.addEvent(editEvent, false);
+
+                // Then both events end up in the timeline
+                const lastEvent = thread.timeline.at(-1)!;
+                const secondLastEvent = thread.timeline.at(-2)!;
+                expect(lastEvent).toBe(editEvent);
+                expect(secondLastEvent).toBe(messageToEdit);
+
+                // And the first message has been edited
+                expect(secondLastEvent.getContent().body).toEqual("edit");
+            });
+
+            it("Adds edits fetched on demand to the thread timeline and applies them", async () => {
+                // Given we don't support recursive relations
+                const client = createClient(new Map([[Feature.RelationsRecursion, ServerSupport.Unsupported]]));
+                // And we have a thread
+                const user = "@alice:matrix.org";
+                const room = "!room:z";
+                const thread = await createThread(client, user, room);
+
+                // When a message is added to the thread, and an edit to it is provided on demand
+                const messageToEdit = createThreadMessage(thread.id, user, room, "Thread reply");
+                // (fetchEditsWhereNeeded only applies to encrypted messages for some reason)
+                messageToEdit.event.type = EventType.RoomMessageEncrypted;
+                const editEvent = mkEdit(messageToEdit, client, user, room, "edit");
+                mocked(client.relations).mockImplementation(async (_roomId, eventId) => {
+                    if (eventId === messageToEdit.getId()) {
+                        return { events: [editEvent] };
+                    } else {
+                        return { events: [] };
+                    }
+                });
+                await thread.addEvent(messageToEdit, false);
+
+                // Then both events end up in the timeline
+                const lastEvent = thread.timeline.at(-1)!;
+                const secondLastEvent = thread.timeline.at(-2)!;
+                expect(lastEvent).toBe(editEvent);
+                expect(secondLastEvent).toBe(messageToEdit);
+
+                // And the first message has been edited
+                expect(secondLastEvent.getContent().body).toEqual("edit");
+            });
+        });
+    });
 });
+
+/**
+ * Create a message event that lives in a thread
+ */
+function createThreadMessage(threadId: string, user: string, room: string, msg: string): MatrixEvent {
+    return makeThreadEvent({
+        event: true,
+        user,
+        room,
+        msg,
+        rootEventId: threadId,
+        replyToEventId: threadId,
+    });
+}
+
+/**
+ * Create a thread and wait for it to be properly initialised (so you can safely
+ * add events to it and expect them to appear in the timeline.
+ */
+async function createThread(client: MatrixClient, user: string, roomId: string): Promise<Thread> {
+    const root = mkMessage({ event: true, user, room: roomId, msg: "Thread root" });
+    const room = new Room(roomId, client, "@roomcreator:x");
+
+    // Ensure the root is in the room timeline
+    root.setThreadId(root.getId());
+    await room.addLiveEvents([root]);
+
+    // Create the thread and wait for it to be initialised
+    const thread = room.createThread(root.getId()!, root, [], false);
+    await new Promise<void>((res) => thread.once(RoomEvent.TimelineReset, () => res()));
+
+    return thread;
+}
+
+/**
+ * Create a MatrixClient that supports threads and has all the methods used when
+ * creating a thread that call out to HTTP endpoints mocked out.
+ */
+function createClient(canSupport = new Map()): MatrixClient {
+    const client = mock(MatrixClient, "MatrixClient");
+    client.reEmitter = mock(ReEmitter, "ReEmitter");
+    client.canSupport = canSupport;
+
+    jest.spyOn(client, "supportsThreads").mockReturnValue(true);
+    jest.spyOn(client, "getEventMapper").mockReturnValue(eventMapperFor(client, {}));
+
+    // Mock methods that call out to HTTP endpoints
+    jest.spyOn(client, "paginateEventTimeline").mockResolvedValue(true);
+    jest.spyOn(client, "relations").mockResolvedValue({ events: [] });
+    jest.spyOn(client, "fetchRoomEvent").mockResolvedValue({});
+
+    return client;
+}
@@ -0,0 +1,395 @@
+/**
+ * @jest-environment jsdom
+ */
+
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import fetchMock from "fetch-mock-jest";
+import { mocked } from "jest-mock";
+import jwtDecode from "jwt-decode";
+
+import { Method } from "../../../src";
+import * as crypto from "../../../src/crypto/crypto";
+import { logger } from "../../../src/logger";
+import {
+    completeAuthorizationCodeGrant,
+    generateAuthorizationParams,
+    generateAuthorizationUrl,
+    generateOidcAuthorizationUrl,
+} from "../../../src/oidc/authorize";
+import { OidcError } from "../../../src/oidc/error";
+import { makeDelegatedAuthConfig, mockOpenIdConfiguration } from "../../test-utils/oidc";
+
+jest.mock("jwt-decode");
+
+// save for resetting mocks
+const realSubtleCrypto = crypto.subtleCrypto;
+
+describe("oidc authorization", () => {
+    const delegatedAuthConfig = makeDelegatedAuthConfig();
+    const authorizationEndpoint = delegatedAuthConfig.metadata.authorization_endpoint;
+    const tokenEndpoint = delegatedAuthConfig.metadata.token_endpoint;
+    const clientId = "xyz789";
+    const baseUrl = "https://test.com";
+
+    // 14.03.2022 16:15
+    const now = 1647270879403;
+
+    beforeAll(() => {
+        jest.spyOn(logger, "warn");
+        jest.setSystemTime(now);
+
+        fetchMock.get(delegatedAuthConfig.issuer + ".well-known/openid-configuration", mockOpenIdConfiguration());
+    });
+
+    afterEach(() => {
+        // @ts-ignore reset any ugly mocking we did
+        crypto.subtleCrypto = realSubtleCrypto;
+    });
+
+    it("should generate authorization params", () => {
+        const result = generateAuthorizationParams({ redirectUri: baseUrl });
+
+        expect(result.redirectUri).toEqual(baseUrl);
+
+        // random strings
+        expect(result.state.length).toEqual(8);
+        expect(result.nonce.length).toEqual(8);
+        expect(result.codeVerifier.length).toEqual(64);
+
+        const expectedScope =
+            "openid urn:matrix:org.matrix.msc2967.client:api:* urn:matrix:org.matrix.msc2967.client:device:";
+        expect(result.scope.startsWith(expectedScope)).toBeTruthy();
+        // deviceId of 10 characters is appended to the device scope
+        expect(result.scope.length).toEqual(expectedScope.length + 10);
+    });
+
+    describe("generateAuthorizationUrl()", () => {
+        it("should generate url with correct parameters", async () => {
+            // test the no crypto case here
+            // @ts-ignore mocking
+            crypto.subtleCrypto = undefined;
+
+            const authorizationParams = generateAuthorizationParams({ redirectUri: baseUrl });
+            const authUrl = new URL(
+                await generateAuthorizationUrl(authorizationEndpoint, clientId, authorizationParams),
+            );
+
+            expect(authUrl.searchParams.get("response_mode")).toEqual("query");
+            expect(authUrl.searchParams.get("response_type")).toEqual("code");
+            expect(authUrl.searchParams.get("client_id")).toEqual(clientId);
+            expect(authUrl.searchParams.get("code_challenge_method")).toEqual("S256");
+            expect(authUrl.searchParams.get("scope")).toEqual(authorizationParams.scope);
+            expect(authUrl.searchParams.get("state")).toEqual(authorizationParams.state);
+            expect(authUrl.searchParams.get("nonce")).toEqual(authorizationParams.nonce);
+
+            // crypto not available, plain text code_challenge is used
+            expect(authUrl.searchParams.get("code_challenge")).toEqual(authorizationParams.codeVerifier);
+            expect(logger.warn).toHaveBeenCalledWith(
+                "A secure context is required to generate code challenge. Using plain text code challenge",
+            );
+        });
+    });
+
+    describe("generateOidcAuthorizationUrl()", () => {
+        it("should generate url with correct parameters", async () => {
+            const nonce = "abc123";
+
+            const metadata = delegatedAuthConfig.metadata;
+
+            const authUrl = new URL(
+                await generateOidcAuthorizationUrl({
+                    metadata,
+                    homeserverUrl: baseUrl,
+                    clientId,
+                    redirectUri: baseUrl,
+                    nonce,
+                }),
+            );
+
+            expect(authUrl.searchParams.get("response_mode")).toEqual("query");
+            expect(authUrl.searchParams.get("response_type")).toEqual("code");
+            expect(authUrl.searchParams.get("client_id")).toEqual(clientId);
+            expect(authUrl.searchParams.get("code_challenge_method")).toEqual("S256");
+            // scope minus the 10char random device id at the end
+            expect(authUrl.searchParams.get("scope")!.slice(0, -10)).toEqual(
+                "openid urn:matrix:org.matrix.msc2967.client:api:* urn:matrix:org.matrix.msc2967.client:device:",
+            );
+            expect(authUrl.searchParams.get("state")).toBeTruthy();
+            expect(authUrl.searchParams.get("nonce")).toEqual(nonce);
+
+            expect(authUrl.searchParams.get("code_challenge")).toBeTruthy();
+        });
+    });
+
+    describe("completeAuthorizationCodeGrant", () => {
+        const homeserverUrl = "https://server.org/";
+        const identityServerUrl = "https://id.org/";
+        const nonce = "test-nonce";
+        const redirectUri = baseUrl;
+        const code = "auth_code_xyz";
+        const validBearerTokenResponse = {
+            token_type: "Bearer",
+            access_token: "test_access_token",
+            refresh_token: "test_refresh_token",
+            id_token: "valid.id.token",
+            expires_in: 300,
+        };
+
+        const metadata = mockOpenIdConfiguration();
+
+        const validDecodedIdToken = {
+            // nonce matches
+            nonce,
+            // not expired
+            exp: Date.now() / 1000 + 100000,
+            // audience is this client
+            aud: clientId,
+            // issuer matches
+            iss: metadata.issuer,
+            sub: "123",
+        };
+
+        const mockSessionStorage = (state: Record<string, unknown>): void => {
+            jest.spyOn(sessionStorage.__proto__, "getItem").mockImplementation((key: unknown) => {
+                return state[key as string] ?? null;
+            });
+            jest.spyOn(sessionStorage.__proto__, "setItem").mockImplementation(
+                // @ts-ignore mock type
+                (key: string, value: unknown) => (state[key] = value),
+            );
+            jest.spyOn(sessionStorage.__proto__, "removeItem").mockImplementation((key: unknown) => {
+                const { [key as string]: value, ...newState } = state;
+                state = newState;
+                return value;
+            });
+        };
+
+        const getValueFromStorage = <T = string>(state: string, key: string): T => {
+            const storedState = window.sessionStorage.getItem(`mx_oidc_${state}`)!;
+            return JSON.parse(storedState)[key] as unknown as T;
+        };
+
+        /**
+         * These tests kind of integration test oidc auth, by using `generateOidcAuthorizationUrl` and mocked storage
+         * to mock the use case of initiating oidc auth, putting state in storage, redirecting to OP,
+         * then returning and using state to verfiy.
+         * Returns random state string used to access storage
+         * @param params
+         */
+        const setupState = async (params = {}): Promise<string> => {
+            const url = await generateOidcAuthorizationUrl({
+                metadata,
+                redirectUri,
+                clientId,
+                homeserverUrl,
+                identityServerUrl,
+                nonce,
+                ...params,
+            });
+
+            const state = new URL(url).searchParams.get("state")!;
+
+            // add the scope with correct deviceId to the mocked bearer token response
+            const scope = getValueFromStorage(state, "scope");
+            fetchMock.post(metadata.token_endpoint, {
+                status: 200,
+                headers: {
+                    "Content-Type": "application/json",
+                },
+                ...validBearerTokenResponse,
+                scope,
+            });
+
+            return state;
+        };
+
+        beforeEach(() => {
+            fetchMock.mockClear();
+            fetchMock.resetBehavior();
+
+            fetchMock.get(`${metadata.issuer}.well-known/openid-configuration`, metadata);
+            fetchMock.get(`${metadata.issuer}jwks`, {
+                status: 200,
+                headers: {
+                    "Content-Type": "application/json",
+                },
+                keys: [],
+            });
+
+            mockSessionStorage({});
+
+            mocked(jwtDecode).mockReturnValue(validDecodedIdToken);
+        });
+
+        it("should make correct request to the token endpoint", async () => {
+            const state = await setupState();
+            const codeVerifier = getValueFromStorage(state, "code_verifier");
+            await completeAuthorizationCodeGrant(code, state);
+
+            expect(fetchMock).toHaveBeenCalledWith(
+                metadata.token_endpoint,
+                expect.objectContaining({
+                    method: Method.Post,
+                    credentials: "same-origin",
+                    headers: {
+                        "Accept": "application/json",
+                        "Content-Type": "application/x-www-form-urlencoded",
+                    },
+                }),
+            );
+
+            // check body is correctly formed
+            const queryParams = fetchMock.mock.calls.find(([endpoint]) => endpoint === metadata.token_endpoint)![1]!
+                .body as URLSearchParams;
+            expect(queryParams.get("grant_type")).toEqual("authorization_code");
+            expect(queryParams.get("client_id")).toEqual(clientId);
+            expect(queryParams.get("code_verifier")).toEqual(codeVerifier);
+            expect(queryParams.get("redirect_uri")).toEqual(redirectUri);
+            expect(queryParams.get("code")).toEqual(code);
+        });
+
+        it("should return with valid bearer token", async () => {
+            const state = await setupState();
+            const scope = getValueFromStorage(state, "scope");
+            const result = await completeAuthorizationCodeGrant(code, state);
+
+            expect(result).toEqual({
+                homeserverUrl,
+                identityServerUrl,
+                oidcClientSettings: {
+                    clientId,
+                    issuer: metadata.issuer,
+                },
+                tokenResponse: {
+                    access_token: validBearerTokenResponse.access_token,
+                    id_token: validBearerTokenResponse.id_token,
+                    refresh_token: validBearerTokenResponse.refresh_token,
+                    token_type: validBearerTokenResponse.token_type,
+                    // this value is slightly unstable because it uses the clock
+                    expires_at: result.tokenResponse.expires_at,
+                    scope,
+                },
+            });
+        });
+
+        it("should return with valid bearer token where token_type is lowercase", async () => {
+            const state = await setupState();
+            const scope = getValueFromStorage(state, "scope");
+            const tokenResponse = {
+                ...validBearerTokenResponse,
+                scope,
+                token_type: "bearer",
+            };
+            fetchMock.post(
+                tokenEndpoint,
+                {
+                    headers: {
+                        "Content-Type": "application/json",
+                    },
+                    ...tokenResponse,
+                },
+                { overwriteRoutes: true },
+            );
+
+            const result = await completeAuthorizationCodeGrant(code, state);
+
+            expect(result).toEqual({
+                homeserverUrl,
+                identityServerUrl,
+                oidcClientSettings: {
+                    clientId,
+                    issuer: metadata.issuer,
+                },
+                // results in token that uses 'Bearer' token type
+                tokenResponse: {
+                    access_token: validBearerTokenResponse.access_token,
+                    id_token: validBearerTokenResponse.id_token,
+                    refresh_token: validBearerTokenResponse.refresh_token,
+                    token_type: "Bearer",
+                    // this value is slightly unstable because it uses the clock
+                    expires_at: result.tokenResponse.expires_at,
+                    scope,
+                },
+            });
+
+            expect(result.tokenResponse.token_type).toEqual("Bearer");
+        });
+
+        it("should throw when state is not found in storage", async () => {
+            // don't setup sessionStorage with expected state
+            const state = "abc123";
+            fetchMock.post(
+                metadata.token_endpoint,
+                {
+                    status: 500,
+                },
+                { overwriteRoutes: true },
+            );
+            await expect(() => completeAuthorizationCodeGrant(code, state)).rejects.toThrow(
+                new Error(OidcError.MissingOrInvalidStoredState),
+            );
+        });
+
+        it("should throw with code exchange failed error when request fails", async () => {
+            const state = await setupState();
+            fetchMock.post(
+                metadata.token_endpoint,
+                {
+                    status: 500,
+                },
+                { overwriteRoutes: true },
+            );
+            await expect(() => completeAuthorizationCodeGrant(code, state)).rejects.toThrow(
+                new Error(OidcError.CodeExchangeFailed),
+            );
+        });
+
+        it("should throw invalid token error when token is invalid", async () => {
+            const state = await setupState();
+            const invalidBearerTokenResponse = {
+                ...validBearerTokenResponse,
+                access_token: null,
+            };
+            fetchMock.post(
+                metadata.token_endpoint,
+                {
+                    headers: {
+                        "Content-Type": "application/json",
+                    },
+                    ...invalidBearerTokenResponse,
+                },
+                { overwriteRoutes: true },
+            );
+            await expect(() => completeAuthorizationCodeGrant(code, state)).rejects.toThrow(
+                new Error(OidcError.InvalidBearerTokenResponse),
+            );
+        });
+
+        it("should throw invalid id token error when id_token is invalid", async () => {
+            const state = await setupState();
+            mocked(jwtDecode).mockReturnValue({
+                ...validDecodedIdToken,
+                // invalid audience
+                aud: "something-else",
+            });
+            await expect(() => completeAuthorizationCodeGrant(code, state)).rejects.toThrow(
+                new Error(OidcError.InvalidIdToken),
+            );
+        });
+    });
+});
@@ -0,0 +1,84 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import fetchMockJest from "fetch-mock-jest";
+
+import { OidcError } from "../../../src/oidc/error";
+import { registerOidcClient } from "../../../src/oidc/register";
+
+describe("registerOidcClient()", () => {
+    const issuer = "https://auth.com/";
+    const registrationEndpoint = "https://auth.com/register";
+    const clientName = "Element";
+    const baseUrl = "https://just.testing";
+    const dynamicClientId = "xyz789";
+
+    const delegatedAuthConfig = {
+        issuer,
+        registrationEndpoint,
+        authorizationEndpoint: issuer + "auth",
+        tokenEndpoint: issuer + "token",
+    };
+    beforeEach(() => {
+        fetchMockJest.mockClear();
+        fetchMockJest.resetBehavior();
+    });
+
+    it("should make correct request to register client", async () => {
+        fetchMockJest.post(registrationEndpoint, {
+            status: 200,
+            body: JSON.stringify({ client_id: dynamicClientId }),
+        });
+        expect(await registerOidcClient(delegatedAuthConfig, clientName, baseUrl)).toEqual(dynamicClientId);
+        expect(fetchMockJest).toHaveBeenCalledWith(registrationEndpoint, {
+            headers: {
+                "Accept": "application/json",
+                "Content-Type": "application/json",
+            },
+            method: "POST",
+            body: JSON.stringify({
+                client_name: clientName,
+                client_uri: baseUrl,
+                response_types: ["code"],
+                grant_types: ["authorization_code", "refresh_token"],
+                redirect_uris: [baseUrl],
+                id_token_signed_response_alg: "RS256",
+                token_endpoint_auth_method: "none",
+                application_type: "web",
+            }),
+        });
+    });
+
+    it("should throw when registration request fails", async () => {
+        fetchMockJest.post(registrationEndpoint, {
+            status: 500,
+        });
+        await expect(() => registerOidcClient(delegatedAuthConfig, clientName, baseUrl)).rejects.toThrow(
+            OidcError.DynamicRegistrationFailed,
+        );
+    });
+
+    it("should throw when registration response is invalid", async () => {
+        fetchMockJest.post(registrationEndpoint, {
+            status: 200,
+            // no clientId in response
+            body: "{}",
+        });
+        await expect(() => registerOidcClient(delegatedAuthConfig, clientName, baseUrl)).rejects.toThrow(
+            OidcError.DynamicRegistrationInvalid,
+        );
+    });
+});
@@ -0,0 +1,289 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { mocked } from "jest-mock";
+import jwtDecode from "jwt-decode";
+
+import { M_AUTHENTICATION } from "../../../src";
+import { logger } from "../../../src/logger";
+import {
+    validateIdToken,
+    validateOIDCIssuerWellKnown,
+    validateWellKnownAuthentication,
+} from "../../../src/oidc/validate";
+import { OidcError } from "../../../src/oidc/error";
+
+jest.mock("jwt-decode");
+
+describe("validateWellKnownAuthentication()", () => {
+    const baseWk = {
+        "m.homeserver": {
+            base_url: "https://hs.org",
+        },
+    };
+    it("should throw not supported error when wellKnown has no m.authentication section", () => {
+        expect(() => validateWellKnownAuthentication(undefined)).toThrow(OidcError.NotSupported);
+    });
+
+    it("should throw misconfigured error when authentication issuer is not a string", () => {
+        const wk = {
+            ...baseWk,
+            [M_AUTHENTICATION.stable!]: {
+                issuer: { url: "test.com" },
+            },
+        };
+        expect(() => validateWellKnownAuthentication(wk[M_AUTHENTICATION.stable!] as any)).toThrow(
+            OidcError.Misconfigured,
+        );
+    });
+
+    it("should throw misconfigured error when authentication account is not a string", () => {
+        const wk = {
+            ...baseWk,
+            [M_AUTHENTICATION.stable!]: {
+                issuer: "test.com",
+                account: { url: "test" },
+            },
+        };
+        expect(() => validateWellKnownAuthentication(wk[M_AUTHENTICATION.stable!] as any)).toThrow(
+            OidcError.Misconfigured,
+        );
+    });
+
+    it("should throw misconfigured error when authentication account is false", () => {
+        const wk = {
+            ...baseWk,
+            [M_AUTHENTICATION.stable!]: {
+                issuer: "test.com",
+                account: false,
+            },
+        };
+        expect(() => validateWellKnownAuthentication(wk[M_AUTHENTICATION.stable!] as any)).toThrow(
+            OidcError.Misconfigured,
+        );
+    });
+
+    it("should return valid config when wk uses stable m.authentication", () => {
+        const wk = {
+            ...baseWk,
+            [M_AUTHENTICATION.stable!]: {
+                issuer: "test.com",
+                account: "account.com",
+            },
+        };
+        expect(validateWellKnownAuthentication(wk[M_AUTHENTICATION.stable!])).toEqual({
+            issuer: "test.com",
+            account: "account.com",
+        });
+    });
+
+    it("should return valid config when m.authentication account is missing", () => {
+        const wk = {
+            ...baseWk,
+            [M_AUTHENTICATION.stable!]: {
+                issuer: "test.com",
+            },
+        };
+        expect(validateWellKnownAuthentication(wk[M_AUTHENTICATION.stable!])).toEqual({
+            issuer: "test.com",
+        });
+    });
+
+    it("should remove unexpected properties", () => {
+        const wk = {
+            ...baseWk,
+            [M_AUTHENTICATION.stable!]: {
+                issuer: "test.com",
+                somethingElse: "test",
+            },
+        };
+        expect(validateWellKnownAuthentication(wk[M_AUTHENTICATION.stable!])).toEqual({
+            issuer: "test.com",
+        });
+    });
+});
+
+describe("validateOIDCIssuerWellKnown", () => {
+    const validWk: any = {
+        authorization_endpoint: "https://test.org/authorize",
+        token_endpoint: "https://authorize.org/token",
+        registration_endpoint: "https://authorize.org/regsiter",
+        revocation_endpoint: "https://authorize.org/regsiter",
+        response_types_supported: ["code"],
+        grant_types_supported: ["authorization_code"],
+        code_challenge_methods_supported: ["S256"],
+    };
+    beforeEach(() => {
+        // stub to avoid console litter
+        jest.spyOn(logger, "error")
+            .mockClear()
+            .mockImplementation(() => {});
+    });
+
+    it("should throw OP support error when wellKnown is not an object", () => {
+        expect(() => {
+            validateOIDCIssuerWellKnown([]);
+        }).toThrow(OidcError.OpSupport);
+        expect(logger.error).toHaveBeenCalledWith("Issuer configuration not found or malformed");
+    });
+
+    it("should log all errors before throwing", () => {
+        expect(() => {
+            validateOIDCIssuerWellKnown({
+                ...validWk,
+                authorization_endpoint: undefined,
+                response_types_supported: [],
+            });
+        }).toThrow(OidcError.OpSupport);
+        expect(logger.error).toHaveBeenCalledWith("Missing or invalid property: authorization_endpoint");
+        expect(logger.error).toHaveBeenCalledWith("Invalid property: response_types_supported. code is required.");
+    });
+
+    it("should return validated issuer config", () => {
+        expect(validateOIDCIssuerWellKnown(validWk)).toEqual({
+            authorizationEndpoint: validWk.authorization_endpoint,
+            tokenEndpoint: validWk.token_endpoint,
+            registrationEndpoint: validWk.registration_endpoint,
+        });
+    });
+
+    it("should return validated issuer config without registrationendpoint", () => {
+        const wk = { ...validWk };
+        delete wk.registration_endpoint;
+        expect(validateOIDCIssuerWellKnown(wk)).toEqual({
+            authorizationEndpoint: validWk.authorization_endpoint,
+            tokenEndpoint: validWk.token_endpoint,
+            registrationEndpoint: undefined,
+        });
+    });
+
+    type TestCase = [string, any];
+    it.each<TestCase>([
+        ["authorization_endpoint", undefined],
+        ["authorization_endpoint", { not: "a string" }],
+        ["token_endpoint", undefined],
+        ["token_endpoint", { not: "a string" }],
+        ["registration_endpoint", { not: "a string" }],
+        ["response_types_supported", undefined],
+        ["response_types_supported", "not an array"],
+        ["response_types_supported", ["doesnt include code"]],
+        ["grant_types_supported", undefined],
+        ["grant_types_supported", "not an array"],
+        ["grant_types_supported", ["doesnt include authorization_code"]],
+        ["code_challenge_methods_supported", undefined],
+        ["code_challenge_methods_supported", "not an array"],
+        ["code_challenge_methods_supported", ["doesnt include S256"]],
+    ])("should throw OP support error when %s is %s", (key, value) => {
+        const wk = {
+            ...validWk,
+            [key]: value,
+        };
+        expect(() => validateOIDCIssuerWellKnown(wk)).toThrow(OidcError.OpSupport);
+    });
+});
+
+describe("validateIdToken()", () => {
+    const nonce = "test-nonce";
+    const issuer = "https://auth.org/issuer";
+    const clientId = "test-client-id";
+    const idToken = "test-id-token";
+
+    const validDecodedIdToken = {
+        // nonce matches
+        nonce,
+        // not expired
+        exp: Date.now() / 1000 + 5555,
+        // audience is this client
+        aud: clientId,
+        // issuer matches
+        iss: issuer,
+    };
+    beforeEach(() => {
+        mocked(jwtDecode).mockClear().mockReturnValue(validDecodedIdToken);
+
+        jest.spyOn(logger, "error").mockClear();
+    });
+
+    it("should throw when idToken is falsy", () => {
+        expect(() => validateIdToken(undefined, issuer, clientId, nonce)).toThrow(new Error(OidcError.InvalidIdToken));
+    });
+
+    it("should throw when idToken cannot be decoded", () => {
+        mocked(jwtDecode).mockImplementation(() => {
+            throw new Error("oh no!");
+        });
+        expect(() => validateIdToken(undefined, issuer, clientId, nonce)).toThrow(new Error(OidcError.InvalidIdToken));
+    });
+
+    it("should throw when issuer does not match", () => {
+        mocked(jwtDecode).mockReturnValue({
+            ...validDecodedIdToken,
+            iss: "https://badissuer.com",
+        });
+        expect(() => validateIdToken(idToken, issuer, clientId, nonce)).toThrow(new Error(OidcError.InvalidIdToken));
+        expect(logger.error).toHaveBeenCalledWith("Invalid ID token", new Error("Invalid issuer"));
+    });
+
+    it("should throw when audience does not include clientId", () => {
+        mocked(jwtDecode).mockReturnValue({
+            ...validDecodedIdToken,
+            aud: "qwerty,uiop,asdf",
+        });
+        expect(() => validateIdToken(idToken, issuer, clientId, nonce)).toThrow(new Error(OidcError.InvalidIdToken));
+        expect(logger.error).toHaveBeenCalledWith("Invalid ID token", new Error("Invalid audience"));
+    });
+
+    it("should throw when audience includes clientId and other audiences", () => {
+        mocked(jwtDecode).mockReturnValue({
+            ...validDecodedIdToken,
+            aud: `${clientId},uiop,asdf`,
+        });
+        expect(() => validateIdToken(idToken, issuer, clientId, nonce)).toThrow(new Error(OidcError.InvalidIdToken));
+        expect(logger.error).toHaveBeenCalledWith("Invalid ID token", new Error("Invalid audience"));
+    });
+
+    it("should throw when nonce does not match", () => {
+        mocked(jwtDecode).mockReturnValue({
+            ...validDecodedIdToken,
+            nonce: "something else",
+        });
+        expect(() => validateIdToken(idToken, issuer, clientId, nonce)).toThrow(new Error(OidcError.InvalidIdToken));
+        expect(logger.error).toHaveBeenCalledWith("Invalid ID token", new Error("Invalid nonce"));
+    });
+
+    it("should throw when token does not have an expiry", () => {
+        mocked(jwtDecode).mockReturnValue({
+            ...validDecodedIdToken,
+            exp: undefined,
+        });
+        expect(() => validateIdToken(idToken, issuer, clientId, nonce)).toThrow(new Error(OidcError.InvalidIdToken));
+        expect(logger.error).toHaveBeenCalledWith("Invalid ID token", new Error("Invalid expiry"));
+    });
+
+    it("should throw when token is expired", () => {
+        mocked(jwtDecode).mockReturnValue({
+            ...validDecodedIdToken,
+            // expired in the past
+            exp: Date.now() / 1000 - 777,
+        });
+        expect(() => validateIdToken(idToken, issuer, clientId, nonce)).toThrow(new Error(OidcError.InvalidIdToken));
+        expect(logger.error).toHaveBeenCalledWith("Invalid ID token", new Error("Invalid expiry"));
+    });
+
+    it("should not throw for a valid id token", () => {
+        expect(() => validateIdToken(idToken, issuer, clientId, nonce)).not.toThrow();
+    });
+});
@@ -97,51 +97,6 @@ describe("NotificationService", function () {
                        pattern: "foo*bar",
                        rule_id: "foobar",
                    },
-                    {
-                        actions: [
-                            "notify",
-                            {
-                                set_tweak: "sound",
-                                value: "default",
-                            },
-                            {
-                                set_tweak: "highlight",
-                            },
-                        ],
-                        enabled: true,
-                        pattern: "p[io]ng",
-                        rule_id: "pingpong",
-                    },
-                    {
-                        actions: [
-                            "notify",
-                            {
-                                set_tweak: "sound",
-                                value: "default",
-                            },
-                            {
-                                set_tweak: "highlight",
-                            },
-                        ],
-                        enabled: true,
-                        pattern: "I ate [0-9] pies",
-                        rule_id: "pies",
-                    },
-                    {
-                        actions: [
-                            "notify",
-                            {
-                                set_tweak: "sound",
-                                value: "default",
-                            },
-                            {
-                                set_tweak: "highlight",
-                            },
-                        ],
-                        enabled: true,
-                        pattern: "b[!ai]ke",
-                        rule_id: "bakebike",
-                    },
                ],
                override: [
                    {
@@ -289,39 +244,6 @@ describe("NotificationService", function () {
        expect(actions.tweaks.highlight).toEqual(true);
    });

-    // TODO: This is not spec compliant behaviour.
-    //
-    // See https://spec.matrix.org/v1.5/client-server-api/#conditions-1 which
-    // describes pattern should glob:
-    //
-    // 1. * matches 0 or more characters;
-    // 2. ? matches exactly one character
-    it("should bing on character group ([abc]) bing words.", function () {
-        testEvent.event.content!.body = "Ping!";
-        let actions = pushProcessor.actionsForEvent(testEvent);
-        expect(actions.tweaks.highlight).toEqual(true);
-        testEvent.event.content!.body = "Pong!";
-        actions = pushProcessor.actionsForEvent(testEvent);
-        expect(actions.tweaks.highlight).toEqual(true);
-    });
-
-    // TODO: This is not spec compliant behaviour. (See above.)
-    it("should bing on character range ([a-z]) bing words.", function () {
-        testEvent.event.content!.body = "I ate 6 pies";
-        const actions = pushProcessor.actionsForEvent(testEvent);
-        expect(actions.tweaks.highlight).toEqual(true);
-    });
-
-    // TODO: This is not spec compliant behaviour. (See above.)
-    it("should bing on character negation ([!a]) bing words.", function () {
-        testEvent.event.content!.body = "boke";
-        let actions = pushProcessor.actionsForEvent(testEvent);
-        expect(actions.tweaks.highlight).toEqual(true);
-        testEvent.event.content!.body = "bake";
-        actions = pushProcessor.actionsForEvent(testEvent);
-        expect(actions.tweaks.highlight).toEqual(false);
-    });
-
    it("should not bing on room server ACL changes", function () {
        testEvent = utils.mkEvent({
            type: EventType.RoomServerAcl,
@@ -735,7 +657,7 @@ describe("NotificationService", function () {
                    content: {
                        "body": "",
                        "msgtype": "m.text",
-                        "org.matrix.msc3952.mentions": {},
+                        "m.mentions": {},
                    },
                });

@@ -195,7 +195,7 @@ describe.each([[StoreType.Memory], [StoreType.IndexedDB]])("queueToDevice (%s st

    it("retries on retryImmediately()", async function () {
        httpBackend.when("GET", "/_matrix/client/versions").respond(200, {
-            versions: ["r0.0.1"],
+            versions: ["v1.1"],
        });

        await Promise.all([client.startClient(), httpBackend.flush(undefined, 1, 20)]);
@@ -219,7 +219,7 @@ describe.each([[StoreType.Memory], [StoreType.IndexedDB]])("queueToDevice (%s st

    it("retries on when client is started", async function () {
        httpBackend.when("GET", "/_matrix/client/versions").respond(200, {
-            versions: ["r0.0.1"],
+            versions: ["v1.1"],
        });

        await Promise.all([client.startClient(), httpBackend.flush("/_matrix/client/versions", 1, 20)]);
@@ -243,7 +243,7 @@ describe.each([[StoreType.Memory], [StoreType.IndexedDB]])("queueToDevice (%s st

    it("retries when a message is retried", async function () {
        httpBackend.when("GET", "/_matrix/client/versions").respond(200, {
-            versions: ["r0.0.1"],
+            versions: ["v1.1"],
        });

        await Promise.all([client.startClient(), httpBackend.flush(undefined, 1, 20)]);
@@ -16,9 +16,9 @@ limitations under the License.

 import MockHttpBackend from "matrix-mock-request";

-import { MAIN_ROOM_TIMELINE, ReceiptType } from "../../src/@types/read_receipts";
+import { MAIN_ROOM_TIMELINE, ReceiptType, WrappedReceipt } from "../../src/@types/read_receipts";
 import { MatrixClient } from "../../src/client";
-import { EventType } from "../../src/matrix";
+import { EventType, MatrixEvent, Room } from "../../src/matrix";
 import { synthesizeReceipt } from "../../src/models/read-receipt";
 import { encodeUri } from "../../src/utils";
 import * as utils from "../test-utils/test-utils";
@@ -42,42 +42,46 @@ let httpBackend: MockHttpBackend;
 const THREAD_ID = "$thread_event_id";
 const ROOM_ID = "!123:matrix.org";

-const threadEvent = utils.mkEvent({
-    event: true,
-    type: EventType.RoomMessage,
-    user: "@bob:matrix.org",
-    room: ROOM_ID,
-    content: {
-        "body": "Hello from a thread",
-        "m.relates_to": {
-            "event_id": THREAD_ID,
-            "m.in_reply_to": {
-                event_id: THREAD_ID,
-            },
-            "rel_type": "m.thread",
-        },
-    },
-});
-
-const roomEvent = utils.mkEvent({
-    event: true,
-    type: EventType.RoomMessage,
-    user: "@bob:matrix.org",
-    room: ROOM_ID,
-    content: {
-        body: "Hello from a room",
-    },
-});
-
 describe("Read receipt", () => {
+    let threadEvent: MatrixEvent;
+    let roomEvent: MatrixEvent;
+
    beforeEach(() => {
        httpBackend = new MockHttpBackend();
        client = new MatrixClient({
+            userId: "@user:server",
            baseUrl: "https://my.home.server",
            accessToken: "my.access.token",
            fetchFn: httpBackend.fetchFn as typeof global.fetch,
        });
        client.isGuest = () => false;
+        client.supportsThreads = () => true;
+
+        threadEvent = utils.mkEvent({
+            event: true,
+            type: EventType.RoomMessage,
+            user: "@bob:matrix.org",
+            room: ROOM_ID,
+            content: {
+                "body": "Hello from a thread",
+                "m.relates_to": {
+                    "event_id": THREAD_ID,
+                    "m.in_reply_to": {
+                        event_id: THREAD_ID,
+                    },
+                    "rel_type": "m.thread",
+                },
+            },
+        });
+        roomEvent = utils.mkEvent({
+            event: true,
+            type: EventType.RoomMessage,
+            user: "@bob:matrix.org",
+            room: ROOM_ID,
+            content: {
+                body: "Hello from a room",
+            },
+        });
    });

    describe("sendReceipt", () => {
@@ -143,13 +147,69 @@ describe("Read receipt", () => {
            await httpBackend.flushAllExpected();
            await flushPromises();
        });
+
+        it("should send a main timeline read receipt for a reaction to a thread root", async () => {
+            roomEvent.event.event_id = THREAD_ID;
+            const reaction = utils.mkReaction(roomEvent, client, client.getSafeUserId(), ROOM_ID);
+            const thread = new Room(ROOM_ID, client, client.getSafeUserId()).createThread(
+                THREAD_ID,
+                roomEvent,
+                [threadEvent],
+                false,
+            );
+            threadEvent.setThread(thread);
+            reaction.setThread(thread);
+
+            httpBackend
+                .when(
+                    "POST",
+                    encodeUri("/rooms/$roomId/receipt/$receiptType/$eventId", {
+                        $roomId: ROOM_ID,
+                        $receiptType: ReceiptType.Read,
+                        $eventId: reaction.getId()!,
+                    }),
+                )
+                .check((request) => {
+                    expect(request.data.thread_id).toEqual(MAIN_ROOM_TIMELINE);
+                })
+                .respond(200, {});
+
+            client.sendReceipt(reaction, ReceiptType.Read, {});
+
+            await httpBackend.flushAllExpected();
+            await flushPromises();
+        });
+
+        it("should always send unthreaded receipts if threads support is disabled", async () => {
+            client.supportsThreads = () => false;
+
+            httpBackend
+                .when(
+                    "POST",
+                    encodeUri("/rooms/$roomId/receipt/$receiptType/$eventId", {
+                        $roomId: ROOM_ID,
+                        $receiptType: ReceiptType.Read,
+                        $eventId: roomEvent.getId()!,
+                    }),
+                )
+                .check((request) => {
+                    expect(request.data.thread_id).toEqual(undefined);
+                })
+                .respond(200, {});
+
+            client.sendReceipt(roomEvent, ReceiptType.Read, {});
+
+            await httpBackend.flushAllExpected();
+            await flushPromises();
+        });
    });

    describe("synthesizeReceipt", () => {
        it.each([
-            { event: roomEvent, destinationId: MAIN_ROOM_TIMELINE },
-            { event: threadEvent, destinationId: threadEvent.threadRootId! },
-        ])("adds the receipt to $destinationId", ({ event, destinationId }) => {
+            { getEvent: () => roomEvent, destinationId: MAIN_ROOM_TIMELINE },
+            { getEvent: () => threadEvent, destinationId: THREAD_ID },
+        ])("adds the receipt to $destinationId", ({ getEvent, destinationId }) => {
+            const event = getEvent();
            const userId = "@bob:example.org";
            const receiptType = ReceiptType.Read;

@@ -160,4 +220,42 @@ describe("Read receipt", () => {
            expect(content.thread_id).toEqual(destinationId);
        });
    });
+
+    describe("addReceiptToStructure", () => {
+        it("should not allow an older unthreaded receipt to clobber a `main` threaded one", () => {
+            const userId = client.getSafeUserId();
+            const room = new Room(ROOM_ID, client, userId);
+
+            const unthreadedReceipt: WrappedReceipt = {
+                eventId: "$olderEvent",
+                data: {
+                    ts: 1234567880,
+                },
+            };
+            const mainTimelineReceipt: WrappedReceipt = {
+                eventId: "$newerEvent",
+                data: {
+                    ts: 1234567890,
+                },
+            };
+
+            room.addReceiptToStructure(
+                mainTimelineReceipt.eventId,
+                ReceiptType.ReadPrivate,
+                userId,
+                mainTimelineReceipt.data,
+                false,
+            );
+            expect(room.getEventReadUpTo(userId)).toBe(mainTimelineReceipt.eventId);
+
+            room.addReceiptToStructure(
+                unthreadedReceipt.eventId,
+                ReceiptType.ReadPrivate,
+                userId,
+                unthreadedReceipt.data,
+                false,
+            );
+            expect(room.getEventReadUpTo(userId)).toBe(mainTimelineReceipt.eventId);
+        });
+    });
 });
@@ -96,7 +96,7 @@ describe("ECDHv2", function () {

            expect(aliceChecksum).toEqual(bobChecksum);

-            expect(alice.connect()).rejects.toThrow();
+            await expect(alice.connect()).rejects.toThrow();

            await alice.cancel(RendezvousFailureReason.Unknown);
            await bob.cancel(RendezvousFailureReason.Unknown);
@@ -120,9 +120,9 @@ describe("ECDHv2", function () {

            alice.close();

-            expect(alice.connect()).rejects.toThrow();
-            expect(alice.send({})).rejects.toThrow();
-            expect(alice.receive()).rejects.toThrow();
+            await expect(alice.connect()).rejects.toThrow();
+            await expect(alice.send({})).rejects.toThrow();
+            await expect(alice.receive()).rejects.toThrow();

            await alice.cancel(RendezvousFailureReason.Unknown);
            await bob.cancel(RendezvousFailureReason.Unknown);
@@ -146,10 +146,10 @@ describe("ECDHv2", function () {

            // send a message without encryption
            await aliceTransport.send({ iv: "dummy", ciphertext: "dummy" });
-            expect(bob.receive()).rejects.toThrow();

            await alice.cancel(RendezvousFailureReason.Unknown);
            await bob.cancel(RendezvousFailureReason.Unknown);
+            await expect(bob.receive()).rejects.toThrow();
        });

        it("ciphertext before set up", async function () {
@@ -164,9 +164,8 @@ describe("ECDHv2", function () {

            await bobTransport.send({ iv: "dummy", ciphertext: "dummy" });

-            expect(alice.receive()).rejects.toThrow();
-
            await alice.cancel(RendezvousFailureReason.Unknown);
+            await expect(alice.receive()).rejects.toThrow();
        });
    });
 });
@@ -172,7 +172,7 @@ describe("Rendezvous", function () {

        const cancelPromise = aliceRz.cancel(RendezvousFailureReason.UserDeclined);
        await httpBackend.flush("");
-        expect(cancelPromise).resolves.toBeUndefined();
+        await expect(cancelPromise).resolves.toBeUndefined();
        httpBackend.verifyNoOutstandingExpectation();
        httpBackend.verifyNoOutstandingRequests();

@@ -603,7 +603,7 @@ describe("Rendezvous", function () {

    it("device not online within timeout", async function () {
        const { aliceRz } = await completeLogin({});
-        expect(aliceRz.verifyNewDeviceOnExistingDevice(1000)).rejects.toThrow();
+        await expect(aliceRz.verifyNewDeviceOnExistingDevice(1000)).rejects.toThrow();
    });

    it("device appears online within timeout", async function () {
@@ -627,7 +627,7 @@ describe("Rendezvous", function () {
                getFingerprint: () => "bbbb",
            };
        }, 1500);
-        expect(aliceRz.verifyNewDeviceOnExistingDevice(1000)).rejects.toThrow();
+        await expect(aliceRz.verifyNewDeviceOnExistingDevice(1000)).rejects.toThrow();
    });

    it("mismatched device key", async function () {
@@ -636,6 +636,6 @@ describe("Rendezvous", function () {
                getFingerprint: () => "XXXX",
            },
        });
-        expect(aliceRz.verifyNewDeviceOnExistingDevice(1000)).rejects.toThrow(/different key/);
+        await expect(aliceRz.verifyNewDeviceOnExistingDevice(1000)).rejects.toThrow(/different key/);
    });
 });
@@ -95,10 +95,10 @@ describe("SimpleHttpRendezvousTransport", function () {
            httpBackend.verifyNoOutstandingExpectation();
        }
    }
-    it("should throw an error when no server available", function () {
+    it("should throw an error when no server available", async function () {
        const client = makeMockClient({ userId: "@alice:example.com", deviceId: "DEVICEID", msc3886Enabled: false });
        const simpleHttpTransport = new MSC3886SimpleHttpRendezvousTransport({ client, fetchFn });
-        expect(simpleHttpTransport.send({})).rejects.toThrow("Invalid rendezvous URI");
+        await expect(simpleHttpTransport.send({})).rejects.toThrow("Invalid rendezvous URI");
    });

    it("POST to fallback server", async function () {
@@ -130,7 +130,6 @@ describe("SimpleHttpRendezvousTransport", function () {
            fetchFn,
        });
        const prom = simpleHttpTransport.send({});
-        expect(prom).rejects.toThrow();
        httpBackend.when("POST", "https://fallbackserver/rz").response = {
            body: null,
            response: {
@@ -138,7 +137,7 @@ describe("SimpleHttpRendezvousTransport", function () {
                headers: {},
            },
        };
-        await httpBackend.flush("");
+        await Promise.all([expect(prom).rejects.toThrow(), httpBackend.flush("")]);
    });

    it("POST with absolute path response", async function () {
@@ -364,7 +363,7 @@ describe("SimpleHttpRendezvousTransport", function () {
            fallbackRzServer: "https://fallbackserver/rz",
            fetchFn,
        });
-        expect(simpleHttpTransport.details()).rejects.toThrow();
+        await expect(simpleHttpTransport.details()).rejects.toThrow();
    });

    it("send after cancelled", async function () {
@@ -375,7 +374,7 @@ describe("SimpleHttpRendezvousTransport", function () {
            fetchFn,
        });
        await simpleHttpTransport.cancel(RendezvousFailureReason.UserDeclined);
-        expect(simpleHttpTransport.send({})).resolves.toBeUndefined();
+        await expect(simpleHttpTransport.send({})).resolves.toBeUndefined();
    });

    it("receive before ready", async function () {
@@ -385,7 +384,7 @@ describe("SimpleHttpRendezvousTransport", function () {
            fallbackRzServer: "https://fallbackserver/rz",
            fetchFn,
        });
-        expect(simpleHttpTransport.receive()).rejects.toThrow();
+        await expect(simpleHttpTransport.receive()).rejects.toThrow();
    });

    it("404 failure callback", async function () {
@@ -398,7 +397,6 @@ describe("SimpleHttpRendezvousTransport", function () {
            onFailure,
        });

-        expect(simpleHttpTransport.send({ foo: "baa" })).resolves.toBeUndefined();
        httpBackend.when("POST", "https://fallbackserver/rz").response = {
            body: null,
            response: {
@@ -406,7 +404,10 @@ describe("SimpleHttpRendezvousTransport", function () {
                headers: {},
            },
        };
-        await httpBackend.flush("", 1);
+        await Promise.all([
+            expect(simpleHttpTransport.send({ foo: "baa" })).resolves.toBeUndefined(),
+            httpBackend.flush("", 1),
+        ]);
        expect(onFailure).toHaveBeenCalledWith(RendezvousFailureReason.Unknown);
    });

@@ -438,7 +439,6 @@ describe("SimpleHttpRendezvousTransport", function () {
        }
        {
            // GET with 404 to simulate expiry
-            expect(simpleHttpTransport.receive()).resolves.toBeUndefined();
            httpBackend.when("GET", "https://fallbackserver/rz/123").response = {
                body: { foo: "baa" },
                response: {
@@ -446,7 +446,7 @@ describe("SimpleHttpRendezvousTransport", function () {
                    headers: {},
                },
            };
-            await httpBackend.flush("");
+            await Promise.all([expect(simpleHttpTransport.receive()).resolves.toBeUndefined(), httpBackend.flush("")]);
            expect(onFailure).toHaveBeenCalledWith(RendezvousFailureReason.Expired);
        }
    });
@@ -0,0 +1,76 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import fetchMock from "fetch-mock-jest";
+
+import { EventType, MatrixClient, Room } from "../../src";
+import { RoomHierarchy } from "../../src/room-hierarchy";
+
+describe("RoomHierarchy", () => {
+    const roomId = "!room:server";
+    const client = new MatrixClient({ baseUrl: "https://server", userId: "@user:server" });
+
+    it("should load data from /hierarchy API", async () => {
+        const spy = fetchMock.getOnce(
+            `https://server/_matrix/client/v1/rooms/${encodeURIComponent(roomId)}/hierarchy?suggested_only=false`,
+            {
+                rooms: [],
+            },
+            { overwriteRoutes: true },
+        );
+
+        const room = new Room(roomId, client, client.getSafeUserId());
+        const hierarchy = new RoomHierarchy(room);
+        const res = await hierarchy.load();
+
+        expect(spy).toHaveBeenCalled();
+        expect(res).toHaveLength(0);
+    });
+
+    describe("itSuggested", () => {
+        it("should return true if a room is suggested", async () => {
+            const spy = fetchMock.getOnce(
+                `https://server/_matrix/client/v1/rooms/${encodeURIComponent(roomId)}/hierarchy?suggested_only=false`,
+                {
+                    rooms: [
+                        {
+                            children_state: [
+                                {
+                                    origin_server_ts: 111,
+                                    content: {
+                                        suggested: true,
+                                        via: ["matrix.org"],
+                                    },
+                                    type: EventType.SpaceChild,
+                                    state_key: "!child_room:server",
+                                },
+                            ],
+                            room_id: roomId,
+                        },
+                    ],
+                },
+                { overwriteRoutes: true },
+            );
+
+            const room = new Room(roomId, client, client.getSafeUserId());
+            const hierarchy = new RoomHierarchy(room);
+            await hierarchy.load();
+
+            expect(spy).toHaveBeenCalled();
+            expect(hierarchy.isSuggested(hierarchy.root.roomId, "!child_room:server")).toBeTruthy();
+        });
+    });
+});
@@ -14,9 +14,19 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */

+import fetchMock from "fetch-mock-jest";
+
 import * as utils from "../test-utils/test-utils";
 import { RoomMember, RoomMemberEvent } from "../../src/models/room-member";
-import { EventType, RoomState } from "../../src";
+import {
+    createClient,
+    EventType,
+    MatrixClient,
+    RoomState,
+    UNSTABLE_MSC2666_MUTUAL_ROOMS,
+    UNSTABLE_MSC2666_QUERY_MUTUAL_ROOMS,
+    UNSTABLE_MSC2666_SHARED_ROOMS,
+} from "../../src";

 describe("RoomMember", function () {
    const roomId = "!foo:bar";
@@ -481,3 +491,125 @@ describe("RoomMember", function () {
        });
    });
 });
+
+describe("MutualRooms", () => {
+    let client: MatrixClient;
+    const HS_URL = "https://example.com";
+    const TEST_USER_ID = "@alice:localhost";
+    const TEST_DEVICE_ID = "xzcvb";
+    const QUERIED_USER = "@user:example.com";
+
+    beforeEach(async () => {
+        // anything that we don't have a specific matcher for silently returns a 404
+        fetchMock.catch(404);
+        fetchMock.config.warnOnFallback = true;
+
+        client = createClient({
+            baseUrl: HS_URL,
+            userId: TEST_USER_ID,
+            accessToken: "akjgkrgjs",
+            deviceId: TEST_DEVICE_ID,
+        });
+    });
+
+    afterEach(async () => {
+        await client.stopClient();
+        fetchMock.mockReset();
+    });
+
+    function enableFeature(feature: string) {
+        const mapping: Record<string, boolean> = {};
+
+        mapping[feature] = true;
+
+        fetchMock.get(`${HS_URL}/_matrix/client/versions`, {
+            unstable_features: mapping,
+            versions: ["v1.1"],
+        });
+    }
+
+    it("supports the initial MSC version (shared rooms)", async () => {
+        enableFeature(UNSTABLE_MSC2666_SHARED_ROOMS);
+
+        fetchMock.get("express:/_matrix/client/unstable/uk.half-shot.msc2666/user/shared_rooms/:user_id", (rawUrl) => {
+            const segments = rawUrl.split("/");
+            const lastSegment = decodeURIComponent(segments[segments.length - 1]);
+
+            expect(lastSegment).toEqual(QUERIED_USER);
+
+            return {
+                joined: ["!test:example.com"],
+            };
+        });
+
+        const rooms = await client._unstable_getSharedRooms(QUERIED_USER);
+
+        expect(rooms).toEqual(["!test:example.com"]);
+    });
+
+    it("supports the renaming MSC version (mutual rooms)", async () => {
+        enableFeature(UNSTABLE_MSC2666_MUTUAL_ROOMS);
+
+        fetchMock.get("express:/_matrix/client/unstable/uk.half-shot.msc2666/user/mutual_rooms/:user_id", (rawUrl) => {
+            const segments = rawUrl.split("/");
+            const lastSegment = decodeURIComponent(segments[segments.length - 1]);
+
+            expect(lastSegment).toEqual(QUERIED_USER);
+
+            return {
+                joined: ["!test2:example.com"],
+            };
+        });
+
+        const rooms = await client._unstable_getSharedRooms(QUERIED_USER);
+
+        expect(rooms).toEqual(["!test2:example.com"]);
+    });
+
+    describe("can work the latest MSC version (query mutual rooms)", () => {
+        beforeEach(() => {
+            enableFeature(UNSTABLE_MSC2666_QUERY_MUTUAL_ROOMS);
+        });
+
+        it("works with a simple response", async () => {
+            fetchMock.get("express:/_matrix/client/unstable/uk.half-shot.msc2666/user/mutual_rooms", (rawUrl) => {
+                const url = new URL(rawUrl);
+
+                expect(url.searchParams.get("user_id")).toEqual(QUERIED_USER);
+
+                return {
+                    joined: ["!test3:example.com"],
+                };
+            });
+
+            const rooms = await client._unstable_getSharedRooms(QUERIED_USER);
+
+            expect(rooms).toEqual(["!test3:example.com"]);
+        });
+
+        it("works with a paginated response", async () => {
+            fetchMock.get("express:/_matrix/client/unstable/uk.half-shot.msc2666/user/mutual_rooms", (rawUrl) => {
+                const url = new URL(rawUrl);
+
+                expect(url.searchParams.get("user_id")).toEqual(QUERIED_USER);
+
+                const token = url.searchParams.get("batch_token");
+
+                if (token == "yahaha") {
+                    return {
+                        joined: ["!korok:example.com"],
+                    };
+                } else {
+                    return {
+                        joined: ["!rock:example.com"],
+                        next_batch_token: "yahaha",
+                    };
+                }
+            });
+
+            const rooms = await client._unstable_getSharedRooms(QUERIED_USER);
+
+            expect(rooms).toEqual(["!rock:example.com", "!korok:example.com"]);
+        });
+    });
+});
@@ -70,9 +70,7 @@ describe("RoomState", function () {
                user: userA,
                room: roomId,
                event: true,
-                content: {
-                    creator: userA,
-                },
+                content: {},
            }),
        ]);
    });
@@ -0,0 +1,87 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { Mocked } from "jest-mock";
+import * as RustSdkCryptoJs from "@matrix-org/matrix-sdk-crypto-wasm";
+
+import { CrossSigningIdentity } from "../../../src/rust-crypto/CrossSigningIdentity";
+import { OutgoingRequestProcessor } from "../../../src/rust-crypto/OutgoingRequestProcessor";
+import { ServerSideSecretStorage } from "../../../src/secret-storage";
+
+describe("CrossSigningIdentity", () => {
+    describe("bootstrapCrossSigning", () => {
+        /** the CrossSigningIdentity implementation under test */
+        let crossSigning: CrossSigningIdentity;
+
+        /** a mocked-up OlmMachine which crossSigning is connected to */
+        let olmMachine: Mocked<RustSdkCryptoJs.OlmMachine>;
+
+        /** A mock OutgoingRequestProcessor which crossSigning is connected to */
+        let outgoingRequestProcessor: Mocked<OutgoingRequestProcessor>;
+
+        /** A mock ServerSideSecretStorage which crossSigning is connected to */
+        let secretStorage: Mocked<ServerSideSecretStorage>;
+
+        beforeEach(async () => {
+            await RustSdkCryptoJs.initAsync();
+
+            olmMachine = {
+                crossSigningStatus: jest.fn(),
+                bootstrapCrossSigning: jest.fn(),
+                close: jest.fn(),
+            } as unknown as Mocked<RustSdkCryptoJs.OlmMachine>;
+
+            outgoingRequestProcessor = {
+                makeOutgoingRequest: jest.fn(),
+            } as unknown as Mocked<OutgoingRequestProcessor>;
+
+            secretStorage = {
+                get: jest.fn(),
+            } as unknown as Mocked<ServerSideSecretStorage>;
+
+            crossSigning = new CrossSigningIdentity(olmMachine, outgoingRequestProcessor, secretStorage);
+        });
+
+        it("should do nothing if keys are present on-device and in secret storage", async () => {
+            olmMachine.crossSigningStatus.mockResolvedValue({
+                hasMaster: true,
+                hasSelfSigning: true,
+                hasUserSigning: true,
+            });
+            // TODO: secret storage
+            await crossSigning.bootstrapCrossSigning({});
+            expect(olmMachine.bootstrapCrossSigning).not.toHaveBeenCalled();
+            expect(outgoingRequestProcessor.makeOutgoingRequest).not.toHaveBeenCalled();
+        });
+
+        it("should call bootstrapCrossSigning if a reset is forced", async () => {
+            olmMachine.bootstrapCrossSigning.mockResolvedValue([]);
+            await crossSigning.bootstrapCrossSigning({ setupNewCrossSigning: true });
+            expect(olmMachine.bootstrapCrossSigning).toHaveBeenCalledWith(true);
+        });
+
+        it("should call bootstrapCrossSigning if we need new keys", async () => {
+            olmMachine.crossSigningStatus.mockResolvedValue({
+                hasMaster: false,
+                hasSelfSigning: false,
+                hasUserSigning: false,
+            });
+            olmMachine.bootstrapCrossSigning.mockResolvedValue([]);
+            await crossSigning.bootstrapCrossSigning({});
+            expect(olmMachine.bootstrapCrossSigning).toHaveBeenCalledWith(true);
+        });
+    });
+});
@@ -14,10 +14,10 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */

-import * as RustSdkCryptoJs from "@matrix-org/matrix-sdk-crypto-js";
+import * as RustSdkCryptoJs from "@matrix-org/matrix-sdk-crypto-wasm";
 import fetchMock from "fetch-mock-jest";
 import { Mocked } from "jest-mock";
-import { KeysClaimRequest, UserId } from "@matrix-org/matrix-sdk-crypto-js";
+import { KeysClaimRequest, UserId } from "@matrix-org/matrix-sdk-crypto-wasm";

 import { OutgoingRequestProcessor } from "../../../src/rust-crypto/OutgoingRequestProcessor";
 import { KeyClaimManager } from "../../../src/rust-crypto/KeyClaimManager";
@@ -16,7 +16,7 @@ limitations under the License.

 import MockHttpBackend from "matrix-mock-request";
 import { Mocked } from "jest-mock";
-import * as RustSdkCryptoJs from "@matrix-org/matrix-sdk-crypto-js";
+import * as RustSdkCryptoJs from "@matrix-org/matrix-sdk-crypto-wasm";
 import {
    KeysBackupRequest,
    KeysClaimRequest,
@@ -26,11 +26,12 @@ import {
    SignatureUploadRequest,
    SigningKeysUploadRequest,
    ToDeviceRequest,
-} from "@matrix-org/matrix-sdk-crypto-js";
+} from "@matrix-org/matrix-sdk-crypto-wasm";

 import { TypedEventEmitter } from "../../../src/models/typed-event-emitter";
-import { HttpApiEvent, HttpApiEventHandlerMap, MatrixHttpApi, UIAuthCallback } from "../../../src";
+import { HttpApiEvent, HttpApiEventHandlerMap, IHttpOpts, MatrixHttpApi, UIAuthCallback } from "../../../src";
 import { OutgoingRequestProcessor } from "../../../src/rust-crypto/OutgoingRequestProcessor";
+import { defer } from "../../../src/utils";

 describe("OutgoingRequestProcessor", () => {
    /** the OutgoingRequestProcessor implementation under test */
@@ -161,7 +162,7 @@ describe("OutgoingRequestProcessor", () => {
            .when("PUT", "/_matrix")
            .check((req) => {
                expect(req.path).toEqual(
-                    "https://example.com/_matrix/client/v3/room/test%2Froom/send/test%2Ftype/test%2Ftxnid",
+                    "https://example.com/_matrix/client/v3/rooms/test%2Froom/send/test%2Ftype/test%2Ftxnid",
                );
                expect(req.rawData).toEqual(testBody);
                expect(req.headers["Accept"]).toEqual("application/json");
@@ -218,4 +219,40 @@ describe("OutgoingRequestProcessor", () => {
        await Promise.all([processor.makeOutgoingRequest(outgoingRequest), markSentCallPromise]);
        expect(olmMachine.markRequestAsSent).toHaveBeenCalledWith("5678", 987, "");
    });
+
+    it("does not explode if the OlmMachine is stopped while the request is in flight", async () => {
+        // we use a real olm machine for this test
+        const olmMachine = await RustSdkCryptoJs.OlmMachine.initialize(
+            new RustSdkCryptoJs.UserId("@alice:example.com"),
+            new RustSdkCryptoJs.DeviceId("TEST_DEVICE"),
+        );
+
+        const authRequestResultDefer = defer<string>();
+
+        const authRequestCalledPromise = new Promise<void>((resolve) => {
+            const mockHttpApi = {
+                authedRequest: async () => {
+                    resolve();
+                    return await authRequestResultDefer.promise;
+                },
+            } as unknown as Mocked<MatrixHttpApi<IHttpOpts & { onlyData: true }>>;
+            processor = new OutgoingRequestProcessor(olmMachine, mockHttpApi);
+        });
+
+        // build a request
+        const request = olmMachine.queryKeysForUsers([new RustSdkCryptoJs.UserId("@bob:example.com")]);
+        const result = processor.makeOutgoingRequest(request);
+
+        // wait for the HTTP request to be made
+        await authRequestCalledPromise;
+
+        // while the HTTP request is in flight, the OlmMachine gets stopped.
+        olmMachine.close();
+
+        // the HTTP request completes...
+        authRequestResultDefer.resolve("{}");
+
+        // ... and `makeOutgoingRequest` resolves satisfactorily
+        await result;
+    });
 });
@@ -14,42 +14,81 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */

-import "fake-indexeddb/auto";
-import { IDBFactory } from "fake-indexeddb";
-import * as RustSdkCryptoJs from "@matrix-org/matrix-sdk-crypto-js";
-import { KeysQueryRequest, OlmMachine } from "@matrix-org/matrix-sdk-crypto-js";
-import { Mocked } from "jest-mock";
+import * as RustSdkCryptoJs from "@matrix-org/matrix-sdk-crypto-wasm";
+import { KeysQueryRequest, OlmMachine } from "@matrix-org/matrix-sdk-crypto-wasm";
+import { mocked, Mocked } from "jest-mock";
+import fetchMock from "fetch-mock-jest";

 import { RustCrypto } from "../../../src/rust-crypto/rust-crypto";
 import { initRustCrypto } from "../../../src/rust-crypto";
-import { IHttpOpts, IToDeviceEvent, MatrixClient, MatrixHttpApi } from "../../../src";
+import {
+    CryptoEvent,
+    Device,
+    DeviceVerification,
+    HttpApiEvent,
+    HttpApiEventHandlerMap,
+    IHttpOpts,
+    IToDeviceEvent,
+    MatrixClient,
+    MatrixEvent,
+    MatrixHttpApi,
+    TypedEventEmitter,
+} from "../../../src";
 import { mkEvent } from "../../test-utils/test-utils";
 import { CryptoBackend } from "../../../src/common-crypto/CryptoBackend";
 import { IEventDecryptionResult } from "../../../src/@types/crypto";
 import { OutgoingRequestProcessor } from "../../../src/rust-crypto/OutgoingRequestProcessor";
 import { ServerSideSecretStorage } from "../../../src/secret-storage";
-
-afterEach(() => {
-    // reset fake-indexeddb after each test, to make sure we don't leak connections
-    // cf https://github.com/dumbmatter/fakeIndexedDB#wipingresetting-the-indexeddb-for-a-fresh-state
-    // eslint-disable-next-line no-global-assign
-    indexedDB = new IDBFactory();
-});
+import {
+    CryptoCallbacks,
+    EventShieldColour,
+    EventShieldReason,
+    ImportRoomKeysOpts,
+    VerificationRequest,
+} from "../../../src/crypto-api";
+import * as testData from "../../test-utils/test-data";
+import { defer } from "../../../src/utils";

 const TEST_USER = "@alice:example.com";
 const TEST_DEVICE_ID = "TEST_DEVICE";

+afterEach(() => {
+    fetchMock.reset();
+});
+
 describe("RustCrypto", () => {
-    describe(".exportRoomKeys", () => {
+    describe(".importRoomKeys and .exportRoomKeys", () => {
        let rustCrypto: RustCrypto;

-        beforeEach(async () => {
-            rustCrypto = await makeTestRustCrypto();
-        });
+        beforeEach(
+            async () => {
+                rustCrypto = await makeTestRustCrypto();
+            },
+            /* it can take a while to initialise the crypto library on the first pass, so bump up the timeout. */
+            10000,
+        );
+
+        it("should import and export keys", async () => {
+            const someRoomKeys = testData.MEGOLM_SESSION_DATA_ARRAY;
+            let importTotal = 0;
+            const opt: ImportRoomKeysOpts = {
+                progressCallback: (stage) => {
+                    importTotal = stage.total;
+                },
+            };
+            await rustCrypto.importRoomKeys(someRoomKeys, opt);
+
+            expect(importTotal).toBe(someRoomKeys.length);

-        it("should return a list", async () => {
            const keys = await rustCrypto.exportRoomKeys();
            expect(Array.isArray(keys)).toBeTruthy();
+            expect(keys.length).toBe(someRoomKeys.length);
+
+            const aSession = someRoomKeys[0];
+
+            const exportedKey = keys.find((k) => k.session_id == aSession.session_id);
+
+            expect(aSession).toStrictEqual(exportedKey);
        });
    });

@@ -91,21 +130,81 @@ describe("RustCrypto", () => {
            const res = await rustCrypto.preprocessToDeviceMessages(inputs);
            expect(res).toEqual(inputs);
        });
+
+        it("emits VerificationRequestReceived on incoming m.key.verification.request", async () => {
+            const toDeviceEvent = {
+                type: "m.key.verification.request",
+                content: {
+                    from_device: "testDeviceId",
+                    methods: ["m.sas.v1"],
+                    transaction_id: "testTxn",
+                    timestamp: Date.now() - 1000,
+                },
+                sender: "@user:id",
+            };
+
+            const onEvent = jest.fn();
+            rustCrypto.on(CryptoEvent.VerificationRequestReceived, onEvent);
+            await rustCrypto.preprocessToDeviceMessages([toDeviceEvent]);
+            expect(onEvent).toHaveBeenCalledTimes(1);
+
+            const [req]: [VerificationRequest] = onEvent.mock.lastCall;
+            expect(req.transactionId).toEqual("testTxn");
+        });
    });

-    it("isCrossSigningReady", async () => {
-        const rustCrypto = await makeTestRustCrypto();
-        await expect(rustCrypto.isCrossSigningReady()).resolves.toBe(false);
-    });
-
-    it("getCrossSigningKeyId", async () => {
+    it("getCrossSigningKeyId when there is no cross signing keys", async () => {
        const rustCrypto = await makeTestRustCrypto();
        await expect(rustCrypto.getCrossSigningKeyId()).resolves.toBe(null);
    });

-    it("bootstrapCrossSigning", async () => {
+    describe("getCrossSigningStatus", () => {
+        it("returns sensible values on a default client", async () => {
+            const secretStorage = {
+                isStored: jest.fn().mockResolvedValue(null),
+            } as unknown as Mocked<ServerSideSecretStorage>;
+            const rustCrypto = await makeTestRustCrypto(undefined, undefined, undefined, secretStorage);
+
+            const result = await rustCrypto.getCrossSigningStatus();
+
+            expect(secretStorage.isStored).toHaveBeenCalledWith("m.cross_signing.master");
+            expect(result).toEqual({
+                privateKeysCachedLocally: {
+                    masterKey: false,
+                    selfSigningKey: false,
+                    userSigningKey: false,
+                },
+                privateKeysInSecretStorage: false,
+                publicKeysOnDevice: false,
+            });
+        });
+
+        it("throws if `stop` is called mid-call", async () => {
+            const secretStorage = {
+                isStored: jest.fn().mockResolvedValue(null),
+            } as unknown as Mocked<ServerSideSecretStorage>;
+            const rustCrypto = await makeTestRustCrypto(undefined, undefined, undefined, secretStorage);
+
+            // start the call off
+            const result = rustCrypto.getCrossSigningStatus();
+
+            // call `.stop`
+            rustCrypto.stop();
+
+            // getCrossSigningStatus should abort
+            await expect(result).rejects.toEqual(new Error("MatrixClient has been stopped"));
+        });
+    });
+
+    it("bootstrapCrossSigning delegates to CrossSigningIdentity", async () => {
        const rustCrypto = await makeTestRustCrypto();
+        const mockCrossSigningIdentity = {
+            bootstrapCrossSigning: jest.fn().mockResolvedValue(undefined),
+        };
+        // @ts-ignore private property
+        rustCrypto.crossSigningIdentity = mockCrossSigningIdentity;
        await rustCrypto.bootstrapCrossSigning({});
+        expect(mockCrossSigningIdentity.bootstrapCrossSigning).toHaveBeenCalledWith({});
    });

    it("isSecretStorageReady", async () => {
@@ -166,6 +265,7 @@ describe("RustCrypto", () => {
                TEST_USER,
                TEST_DEVICE_ID,
                {} as ServerSideSecretStorage,
+                {} as CryptoCallbacks,
            );
            rustCrypto["outgoingRequestProcessor"] = outgoingRequestProcessor;
        });
@@ -182,6 +282,31 @@ describe("RustCrypto", () => {
            expect(outgoingRequestProcessor.makeOutgoingRequest).toHaveBeenCalledWith(testReq);
        });

+        it("should go round the loop again if another sync completes while the first `outgoingRequests` is running", async () => {
+            // the first call to `outgoingMessages` will return a promise which blocks for a while
+            const firstOutgoingRequestsDefer = defer<Array<any>>();
+            mocked(olmMachine.outgoingRequests).mockReturnValueOnce(firstOutgoingRequestsDefer.promise);
+
+            // the second will return a KeysQueryRequest.
+            const testReq = new KeysQueryRequest("1234", "{}");
+            outgoingRequestQueue.push([testReq]);
+
+            // the first sync completes, triggering the first call to `outgoingMessages`
+            rustCrypto.onSyncCompleted({});
+            expect(olmMachine.outgoingRequests).toHaveBeenCalledTimes(1);
+
+            // a second /sync completes before the first call to `outgoingRequests` completes. It shouldn't trigger
+            // a second call immediately, but should queue one up.
+            rustCrypto.onSyncCompleted({});
+            expect(olmMachine.outgoingRequests).toHaveBeenCalledTimes(1);
+
+            // the first call now completes, *with an empty result*, which would normally cause us to exit the loop, but
+            // we should have a second call queued. It should trigger a call to `makeOutgoingRequest`.
+            firstOutgoingRequestsDefer.resolve([]);
+            await awaitCallToMakeOutgoingRequest();
+            expect(olmMachine.outgoingRequests).toHaveBeenCalledTimes(2);
+        });
+
        it("stops looping when stop() is called", async () => {
            for (let i = 0; i < 5; i++) {
                outgoingRequestQueue.push([new KeysQueryRequest("1234", "{}")]);
@@ -255,6 +380,111 @@ describe("RustCrypto", () => {
        });
    });

+    describe(".getEncryptionInfoForEvent", () => {
+        let rustCrypto: RustCrypto;
+        let olmMachine: Mocked<RustSdkCryptoJs.OlmMachine>;
+
+        beforeEach(() => {
+            olmMachine = {
+                getRoomEventEncryptionInfo: jest.fn(),
+            } as unknown as Mocked<RustSdkCryptoJs.OlmMachine>;
+            rustCrypto = new RustCrypto(
+                olmMachine,
+                {} as MatrixClient["http"],
+                TEST_USER,
+                TEST_DEVICE_ID,
+                {} as ServerSideSecretStorage,
+                {} as CryptoCallbacks,
+            );
+        });
+
+        afterEach(() => {
+            jest.restoreAllMocks();
+        });
+
+        async function makeEncryptedEvent(): Promise<MatrixEvent> {
+            const encryptedEvent = mkEvent({
+                event: true,
+                type: "m.room.encrypted",
+                content: { algorithm: "fake_alg" },
+                room: "!room:id",
+            });
+            encryptedEvent.event.event_id = "$event:id";
+            const mockCryptoBackend = {
+                decryptEvent: () =>
+                    ({
+                        clearEvent: { content: { body: "1234" } },
+                    } as unknown as IEventDecryptionResult),
+            } as unknown as CryptoBackend;
+            await encryptedEvent.attemptDecryption(mockCryptoBackend);
+            return encryptedEvent;
+        }
+
+        it("should handle unencrypted events", async () => {
+            const event = mkEvent({ event: true, type: "m.room.message", content: { body: "xyz" } });
+            const res = await rustCrypto.getEncryptionInfoForEvent(event);
+            expect(res).toBe(null);
+            expect(olmMachine.getRoomEventEncryptionInfo).not.toHaveBeenCalled();
+        });
+
+        it("passes the event into the OlmMachine", async () => {
+            const encryptedEvent = await makeEncryptedEvent();
+            const res = await rustCrypto.getEncryptionInfoForEvent(encryptedEvent);
+            expect(res).toBe(null);
+            expect(olmMachine.getRoomEventEncryptionInfo).toHaveBeenCalledTimes(1);
+            const [passedEvent, passedRoom] = olmMachine.getRoomEventEncryptionInfo.mock.calls[0];
+            expect(passedRoom.toString()).toEqual("!room:id");
+            expect(JSON.parse(passedEvent)).toStrictEqual(
+                expect.objectContaining({
+                    event_id: "$event:id",
+                }),
+            );
+        });
+
+        it.each([
+            [RustSdkCryptoJs.ShieldColor.None, EventShieldColour.NONE],
+            [RustSdkCryptoJs.ShieldColor.Grey, EventShieldColour.GREY],
+            [RustSdkCryptoJs.ShieldColor.Red, EventShieldColour.RED],
+        ])("gets the right shield color (%i)", async (rustShield, expectedShield) => {
+            const mockEncryptionInfo = {
+                shieldState: jest.fn().mockReturnValue({ color: rustShield, message: null }),
+            } as unknown as RustSdkCryptoJs.EncryptionInfo;
+            olmMachine.getRoomEventEncryptionInfo.mockResolvedValue(mockEncryptionInfo);
+
+            const res = await rustCrypto.getEncryptionInfoForEvent(await makeEncryptedEvent());
+            expect(mockEncryptionInfo.shieldState).toHaveBeenCalledWith(false);
+            expect(res).not.toBe(null);
+            expect(res!.shieldColour).toEqual(expectedShield);
+        });
+
+        it.each([
+            [null, null],
+            ["Encrypted by an unverified user.", EventShieldReason.UNVERIFIED_IDENTITY],
+            ["Encrypted by a device not verified by its owner.", EventShieldReason.UNSIGNED_DEVICE],
+            [
+                "The authenticity of this encrypted message can't be guaranteed on this device.",
+                EventShieldReason.AUTHENTICITY_NOT_GUARANTEED,
+            ],
+            ["Encrypted by an unknown or deleted device.", EventShieldReason.UNKNOWN_DEVICE],
+            ["bloop", EventShieldReason.UNKNOWN],
+        ])("gets the right shield reason (%s)", async (rustReason, expectedReason) => {
+            // suppress the warning from the unknown shield reason
+            jest.spyOn(console, "warn").mockImplementation(() => {});
+
+            const mockEncryptionInfo = {
+                shieldState: jest
+                    .fn()
+                    .mockReturnValue({ color: RustSdkCryptoJs.ShieldColor.None, message: rustReason }),
+            } as unknown as RustSdkCryptoJs.EncryptionInfo;
+            olmMachine.getRoomEventEncryptionInfo.mockResolvedValue(mockEncryptionInfo);
+
+            const res = await rustCrypto.getEncryptionInfoForEvent(await makeEncryptedEvent());
+            expect(mockEncryptionInfo.shieldState).toHaveBeenCalledWith(false);
+            expect(res).not.toBe(null);
+            expect(res!.shieldReason).toEqual(expectedReason);
+        });
+    });
+
    describe("get|setTrustCrossSignedDevices", () => {
        let rustCrypto: RustCrypto;

@@ -274,6 +504,60 @@ describe("RustCrypto", () => {
        });
    });

+    describe("setDeviceVerified", () => {
+        let rustCrypto: RustCrypto;
+
+        async function getTestDevice(): Promise<Device> {
+            const devices = await rustCrypto.getUserDeviceInfo([testData.TEST_USER_ID]);
+            return devices.get(testData.TEST_USER_ID)!.get(testData.TEST_DEVICE_ID)!;
+        }
+
+        beforeEach(async () => {
+            rustCrypto = await makeTestRustCrypto(
+                new MatrixHttpApi(new TypedEventEmitter<HttpApiEvent, HttpApiEventHandlerMap>(), {
+                    baseUrl: "http://server/",
+                    prefix: "",
+                    onlyData: true,
+                }),
+                testData.TEST_USER_ID,
+            );
+
+            fetchMock.post("path:/_matrix/client/v3/keys/upload", { one_time_key_counts: {} });
+            fetchMock.post("path:/_matrix/client/v3/keys/query", {
+                device_keys: {
+                    [testData.TEST_USER_ID]: {
+                        [testData.TEST_DEVICE_ID]: testData.SIGNED_TEST_DEVICE_DATA,
+                    },
+                },
+            });
+            // call onSyncCompleted to kick off the outgoingRequestLoop and download the device list.
+            rustCrypto.onSyncCompleted({});
+
+            // before the call, the device should be unverified.
+            const device = await getTestDevice();
+            expect(device.verified).toEqual(DeviceVerification.Unverified);
+        });
+
+        it("should throw an error for an unknown device", async () => {
+            await expect(rustCrypto.setDeviceVerified(testData.TEST_USER_ID, "xxy")).rejects.toThrow("Unknown device");
+        });
+
+        it("should mark an unverified device as verified", async () => {
+            await rustCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+
+            // and confirm that the device is now verified
+            expect((await getTestDevice()).verified).toEqual(DeviceVerification.Verified);
+        });
+
+        it("should mark a verified device as unverified", async () => {
+            await rustCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID);
+            expect((await getTestDevice()).verified).toEqual(DeviceVerification.Verified);
+
+            await rustCrypto.setDeviceVerified(testData.TEST_USER_ID, testData.TEST_DEVICE_ID, false);
+            expect((await getTestDevice()).verified).toEqual(DeviceVerification.Unverified);
+        });
+    });
+
    describe("getDeviceVerificationStatus", () => {
        let rustCrypto: RustCrypto;
        let olmMachine: Mocked<RustSdkCryptoJs.OlmMachine>;
@@ -288,6 +572,7 @@ describe("RustCrypto", () => {
                TEST_USER,
                TEST_DEVICE_ID,
                {} as ServerSideSecretStorage,
+                {} as CryptoCallbacks,
            );
        });

@@ -311,6 +596,209 @@ describe("RustCrypto", () => {
            expect(res).toBe(null);
        });
    });
+
+    describe("userHasCrossSigningKeys", () => {
+        let rustCrypto: RustCrypto;
+
+        beforeEach(async () => {
+            rustCrypto = await makeTestRustCrypto(
+                new MatrixHttpApi(new TypedEventEmitter<HttpApiEvent, HttpApiEventHandlerMap>(), {
+                    baseUrl: "http://server/",
+                    prefix: "",
+                    onlyData: true,
+                }),
+                testData.TEST_USER_ID,
+            );
+        });
+
+        it("throws an error if the fetch fails", async () => {
+            fetchMock.post("path:/_matrix/client/v3/keys/query", 400);
+            await expect(rustCrypto.userHasCrossSigningKeys()).rejects.toThrow("400 error");
+        });
+
+        it("returns false if the user has no cross-signing keys", async () => {
+            fetchMock.post("path:/_matrix/client/v3/keys/query", {
+                device_keys: {
+                    [testData.TEST_USER_ID]: { [testData.TEST_DEVICE_ID]: testData.SIGNED_TEST_DEVICE_DATA },
+                },
+            });
+
+            await expect(rustCrypto.userHasCrossSigningKeys()).resolves.toBe(false);
+        });
+
+        it("returns true if the user has cross-signing keys", async () => {
+            fetchMock.post("path:/_matrix/client/v3/keys/query", {
+                device_keys: {
+                    [testData.TEST_USER_ID]: { [testData.TEST_DEVICE_ID]: testData.SIGNED_TEST_DEVICE_DATA },
+                },
+                ...testData.SIGNED_CROSS_SIGNING_KEYS_DATA,
+            });
+
+            await expect(rustCrypto.userHasCrossSigningKeys()).resolves.toBe(true);
+        });
+
+        it("returns true if the user is untracked, downloadUncached is set at true and the cross-signing keys are available", async () => {
+            fetchMock.post("path:/_matrix/client/v3/keys/query", {
+                device_keys: {
+                    [testData.BOB_TEST_USER_ID]: {
+                        [testData.BOB_TEST_DEVICE_ID]: testData.BOB_SIGNED_TEST_DEVICE_DATA,
+                    },
+                },
+                ...testData.BOB_SIGNED_CROSS_SIGNING_KEYS_DATA,
+            });
+
+            await expect(rustCrypto.userHasCrossSigningKeys(testData.BOB_TEST_USER_ID, true)).resolves.toBe(true);
+        });
+
+        it("returns false if the user is unknown", async () => {
+            await expect(rustCrypto.userHasCrossSigningKeys(testData.BOB_TEST_USER_ID)).resolves.toBe(false);
+        });
+    });
+
+    describe("createRecoveryKeyFromPassphrase", () => {
+        let rustCrypto: RustCrypto;
+
+        beforeEach(async () => {
+            rustCrypto = await makeTestRustCrypto();
+        });
+
+        it("should create a recovery key without password", async () => {
+            const recoveryKey = await rustCrypto.createRecoveryKeyFromPassphrase();
+
+            // Expected the encoded private key to have 59 chars
+            expect(recoveryKey.encodedPrivateKey?.length).toBe(59);
+            // Expect the private key to be an Uint8Array with a length of 32
+            expect(recoveryKey.privateKey).toBeInstanceOf(Uint8Array);
+            expect(recoveryKey.privateKey.length).toBe(32);
+            // Expect keyInfo to be empty
+            expect(Object.keys(recoveryKey.keyInfo!).length).toBe(0);
+        });
+
+        it("should create a recovery key with password", async () => {
+            const recoveryKey = await rustCrypto.createRecoveryKeyFromPassphrase("my password");
+
+            // Expected the encoded private key to have 59 chars
+            expect(recoveryKey.encodedPrivateKey?.length).toBe(59);
+            // Expect the private key to be an Uint8Array with a length of 32
+            expect(recoveryKey.privateKey).toBeInstanceOf(Uint8Array);
+            expect(recoveryKey.privateKey.length).toBe(32);
+            // Expect keyInfo.passphrase to be filled
+            expect(recoveryKey.keyInfo?.passphrase?.algorithm).toBe("m.pbkdf2");
+            expect(recoveryKey.keyInfo?.passphrase?.iterations).toBe(500000);
+        });
+    });
+
+    it("should wait for a keys/query before returning devices", async () => {
+        jest.useFakeTimers();
+
+        const mockHttpApi = new MatrixHttpApi(new TypedEventEmitter<HttpApiEvent, HttpApiEventHandlerMap>(), {
+            baseUrl: "http://server/",
+            prefix: "",
+            onlyData: true,
+        });
+        fetchMock.post("path:/_matrix/client/v3/keys/upload", { one_time_key_counts: {} });
+        fetchMock.post("path:/_matrix/client/v3/keys/query", {
+            device_keys: {
+                [testData.TEST_USER_ID]: {
+                    [testData.TEST_DEVICE_ID]: testData.SIGNED_TEST_DEVICE_DATA,
+                },
+            },
+        });
+
+        const rustCrypto = await makeTestRustCrypto(mockHttpApi, testData.TEST_USER_ID);
+
+        // an attempt to fetch the device list should block
+        const devicesPromise = rustCrypto.getUserDeviceInfo([testData.TEST_USER_ID]);
+
+        // ... until a /sync completes, and we trigger the outgoingRequests.
+        rustCrypto.onSyncCompleted({});
+
+        const deviceMap = (await devicesPromise).get(testData.TEST_USER_ID)!;
+        expect(deviceMap.has(TEST_DEVICE_ID)).toBe(true);
+        expect(deviceMap.has(testData.TEST_DEVICE_ID)).toBe(true);
+        rustCrypto.stop();
+    });
+
+    describe("requestDeviceVerification", () => {
+        it("throws an error if the device is unknown", async () => {
+            const rustCrypto = await makeTestRustCrypto();
+            await expect(() => rustCrypto.requestDeviceVerification(TEST_USER, "unknown")).rejects.toThrow(
+                "Not a known device",
+            );
+        });
+    });
+
+    describe("get|storeSessionBackupPrivateKey", () => {
+        it("can save and restore a key", async () => {
+            const key = "testtesttesttesttesttesttesttest";
+            const rustCrypto = await makeTestRustCrypto();
+            await rustCrypto.storeSessionBackupPrivateKey(new TextEncoder().encode(key));
+            const fetched = await rustCrypto.getSessionBackupPrivateKey();
+            expect(new TextDecoder().decode(fetched!)).toEqual(key);
+        });
+    });
+
+    describe("getActiveSessionBackupVersion", () => {
+        it("returns null", async () => {
+            const rustCrypto = await makeTestRustCrypto();
+            expect(await rustCrypto.getActiveSessionBackupVersion()).toBeNull();
+        });
+    });
+
+    describe("findVerificationRequestDMInProgress", () => {
+        it("throws an error if the userId is not provided", async () => {
+            const rustCrypto = await makeTestRustCrypto();
+            expect(() => rustCrypto.findVerificationRequestDMInProgress(testData.TEST_ROOM_ID)).toThrow(
+                "missing userId",
+            );
+        });
+    });
+
+    describe("requestVerificationDM", () => {
+        it("send verification request to an unknown user", async () => {
+            const rustCrypto = await makeTestRustCrypto();
+            await expect(() =>
+                rustCrypto.requestVerificationDM("@bob:example.com", testData.TEST_ROOM_ID),
+            ).rejects.toThrow("unknown userId @bob:example.com");
+        });
+    });
+
+    describe("getUserVerificationStatus", () => {
+        let rustCrypto: RustCrypto;
+        let olmMachine: Mocked<RustSdkCryptoJs.OlmMachine>;
+
+        beforeEach(() => {
+            olmMachine = {
+                getIdentity: jest.fn(),
+            } as unknown as Mocked<RustSdkCryptoJs.OlmMachine>;
+            rustCrypto = new RustCrypto(
+                olmMachine,
+                {} as MatrixClient["http"],
+                TEST_USER,
+                TEST_DEVICE_ID,
+                {} as ServerSideSecretStorage,
+                {} as CryptoCallbacks,
+            );
+        });
+
+        it("returns an unverified UserVerificationStatus when there is no UserIdentity", async () => {
+            const userVerificationStatus = await rustCrypto.getUserVerificationStatus(testData.TEST_USER_ID);
+            expect(userVerificationStatus.isVerified()).toBeFalsy();
+            expect(userVerificationStatus.isTofu()).toBeFalsy();
+            expect(userVerificationStatus.isCrossSigningVerified()).toBeFalsy();
+            expect(userVerificationStatus.wasCrossSigningVerified()).toBeFalsy();
+        });
+
+        it("returns a verified UserVerificationStatus when the UserIdentity is verified", async () => {
+            olmMachine.getIdentity.mockResolvedValue({ isVerified: jest.fn().mockReturnValue(true) });
+
+            const userVerificationStatus = await rustCrypto.getUserVerificationStatus(testData.TEST_USER_ID);
+            expect(userVerificationStatus.isVerified()).toBeTruthy();
+            expect(userVerificationStatus.isTofu()).toBeFalsy();
+            expect(userVerificationStatus.isCrossSigningVerified()).toBeTruthy();
+            expect(userVerificationStatus.wasCrossSigningVerified()).toBeFalsy();
+        });
+    });
 });

 /** build a basic RustCrypto instance for testing
@@ -322,6 +810,7 @@ async function makeTestRustCrypto(
    userId: string = TEST_USER,
    deviceId: string = TEST_DEVICE_ID,
    secretStorage: ServerSideSecretStorage = {} as ServerSideSecretStorage,
+    cryptoCallbacks: CryptoCallbacks = {} as CryptoCallbacks,
 ): Promise<RustCrypto> {
-    return await initRustCrypto(http, userId, deviceId, secretStorage);
+    return await initRustCrypto(http, userId, deviceId, secretStorage, cryptoCallbacks, null);
 }
@@ -0,0 +1,69 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { secretStorageContainsCrossSigningKeys } from "../../../src/rust-crypto/secret-storage";
+import { ServerSideSecretStorage } from "../../../src/secret-storage";
+
+describe("secret-storage", () => {
+    describe("secretStorageContainsCrossSigningKeys", () => {
+        it("should return false when the master cross-signing key is not stored in secret storage", async () => {
+            const secretStorage = {
+                isStored: jest.fn().mockReturnValue(false),
+            } as unknown as ServerSideSecretStorage;
+
+            const result = await secretStorageContainsCrossSigningKeys(secretStorage);
+            expect(result).toBeFalsy();
+        });
+
+        it("should return false when there is no shared secret storage key between master, user signing and self signing keys", async () => {
+            const secretStorage = {
+                isStored: (type: string) => {
+                    // Return different storage keys
+                    if (type === "m.cross_signing.master") return { secretStorageKey: {} };
+                    else return { secretStorageKey2: {} };
+                },
+            } as unknown as ServerSideSecretStorage;
+
+            const result = await secretStorageContainsCrossSigningKeys(secretStorage);
+            expect(result).toBeFalsy();
+        });
+
+        it("should return false when the secret storage key for the master key is only shared by the user-signing key", async () => {
+            const secretStorage = {
+                isStored: (type: string) => {
+                    // Return different storage keys
+                    if (type === "m.cross_signing.master" || type === "m.cross_signing.user_signing") {
+                        return { secretStorageKey: {} };
+                    } else {
+                        return { secretStorageKey2: {} };
+                    }
+                },
+            } as unknown as ServerSideSecretStorage;
+
+            const result = await secretStorageContainsCrossSigningKeys(secretStorage);
+            expect(result).toBeFalsy();
+        });
+
+        it("should return true when there is shared secret storage key between master, user signing and self signing keys", async () => {
+            const secretStorage = {
+                isStored: jest.fn().mockReturnValue({ secretStorageKey: {} }),
+            } as unknown as ServerSideSecretStorage;
+
+            const result = await secretStorageContainsCrossSigningKeys(secretStorage);
+            expect(result).toBeTruthy();
+        });
+    });
+});
@@ -0,0 +1,137 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import * as RustSdkCryptoJs from "@matrix-org/matrix-sdk-crypto-wasm";
+import { Mocked } from "jest-mock";
+
+import { isVerificationEvent, RustVerificationRequest } from "../../../src/rust-crypto/verification";
+import { OutgoingRequestProcessor } from "../../../src/rust-crypto/OutgoingRequestProcessor";
+import { EventType, MatrixEvent, MsgType } from "../../../src";
+
+describe("VerificationRequest", () => {
+    describe("pending", () => {
+        let request: RustVerificationRequest;
+        let mockedInner: Mocked<RustSdkCryptoJs.VerificationRequest>;
+
+        beforeEach(() => {
+            mockedInner = makeMockedInner();
+            request = makeTestRequest(mockedInner);
+        });
+
+        it("returns true for a created request", () => {
+            expect(request.pending).toBe(true);
+        });
+
+        it("returns false for passive requests", () => {
+            mockedInner.isPassive.mockReturnValue(true);
+            expect(request.pending).toBe(false);
+        });
+
+        it("returns false for completed requests", () => {
+            mockedInner.phase.mockReturnValue(RustSdkCryptoJs.VerificationRequestPhase.Done);
+            expect(request.pending).toBe(false);
+        });
+
+        it("returns false for cancelled requests", () => {
+            mockedInner.phase.mockReturnValue(RustSdkCryptoJs.VerificationRequestPhase.Cancelled);
+            expect(request.pending).toBe(false);
+        });
+    });
+
+    describe("timeout", () => {
+        it("passes through the result", () => {
+            const mockedInner = makeMockedInner();
+            const request = makeTestRequest(mockedInner);
+            mockedInner.timeRemainingMillis.mockReturnValue(10_000);
+            expect(request.timeout).toEqual(10_000);
+        });
+    });
+
+    describe("startVerification", () => {
+        let request: RustVerificationRequest;
+
+        beforeEach(() => {
+            request = makeTestRequest();
+        });
+
+        it("does not permit methods other than SAS", async () => {
+            await expect(request.startVerification("m.reciprocate.v1")).rejects.toThrow(
+                "Unsupported verification method",
+            );
+        });
+
+        it("raises an error if starting verification does not produce a verifier", async () => {
+            await expect(request.startVerification("m.sas.v1")).rejects.toThrow(
+                "Still no verifier after startSas() call",
+            );
+        });
+    });
+});
+
+describe("isVerificationEvent", () => {
+    it.each([
+        [EventType.KeyVerificationCancel],
+        [EventType.KeyVerificationDone],
+        [EventType.KeyVerificationMac],
+        [EventType.KeyVerificationStart],
+        [EventType.KeyVerificationKey],
+        [EventType.KeyVerificationReady],
+        [EventType.KeyVerificationAccept],
+    ])("should return true with %s event", (eventType) => {
+        const event = new MatrixEvent({
+            type: eventType,
+        });
+        expect(isVerificationEvent(event)).toBe(true);
+    });
+
+    it("should return true with EventType.RoomMessage and MsgType.KeyVerificationRequest", () => {
+        const event = new MatrixEvent({
+            type: EventType.RoomMessage,
+            content: {
+                msgtype: MsgType.KeyVerificationRequest,
+            },
+        });
+        expect(isVerificationEvent(event)).toBe(true);
+    });
+
+    it("should return false with a non verification event", () => {
+        const event = new MatrixEvent({
+            type: EventType.RoomName,
+        });
+        expect(isVerificationEvent(event)).toBe(false);
+    });
+});
+
+/** build a RustVerificationRequest with default parameters */
+function makeTestRequest(
+    inner?: RustSdkCryptoJs.VerificationRequest,
+    outgoingRequestProcessor?: OutgoingRequestProcessor,
+): RustVerificationRequest {
+    inner ??= makeMockedInner();
+    outgoingRequestProcessor ??= {} as OutgoingRequestProcessor;
+    return new RustVerificationRequest(inner, outgoingRequestProcessor, []);
+}
+
+/** Mock up a rust-side VerificationRequest */
+function makeMockedInner(): Mocked<RustSdkCryptoJs.VerificationRequest> {
+    return {
+        registerChangesCallback: jest.fn(),
+        startSas: jest.fn(),
+        phase: jest.fn().mockReturnValue(RustSdkCryptoJs.VerificationRequestPhase.Created),
+        isPassive: jest.fn().mockReturnValue(false),
+        timeRemainingMillis: jest.fn(),
+    } as unknown as Mocked<RustSdkCryptoJs.VerificationRequest>;
+}
@@ -254,4 +254,31 @@ describe("IndexedDBStore", () => {
        });
        await expect(store.startup()).rejects.toThrow("Test");
    });
+
+    it("remote worker should terminate upon destroy call", async () => {
+        const terminate = jest.fn();
+        const worker = new (class MockWorker {
+            private onmessage!: (data: any) => void;
+            postMessage(data: any) {
+                this.onmessage({
+                    data: {
+                        command: "cmd_success",
+                        seq: data.seq,
+                        result: [],
+                    },
+                });
+            }
+            public terminate = terminate;
+        })() as unknown as Worker;
+
+        const store = new IndexedDBStore({
+            indexedDB: indexedDB,
+            dbName: "database",
+            localStorage,
+            workerFactory: () => worker,
+        });
+        await store.startup();
+        await store.destroy();
+        expect(terminate).toHaveBeenCalled();
+    });
 });
@@ -16,8 +16,21 @@ limitations under the License.
 */

 import { ReceiptType } from "../../src/@types/read_receipts";
-import { IJoinedRoom, ISyncResponse, SyncAccumulator } from "../../src/sync-accumulator";
+import {
+    IJoinedRoom,
+    IInvitedRoom,
+    IKnockedRoom,
+    IKnockState,
+    ILeftRoom,
+    IRoomEvent,
+    IStateEvent,
+    IStrippedState,
+    ISyncResponse,
+    SyncAccumulator,
+    IInviteState,
+} from "../../src/sync-accumulator";
 import { IRoomSummary } from "../../src";
+import * as utils from "../test-utils/test-utils";

 // The event body & unsigned object get frozen to assert that they don't get altered
 // by the impl
@@ -95,6 +108,13 @@ describe("SyncAccumulator", function () {
                        },
                    },
                },
+                knock: {
+                    "!knock": {
+                        knock_state: {
+                            events: [member("alice", "knock")],
+                        },
+                    },
+                },
            },
        } as unknown as ISyncResponse;
        sa.accumulate(res);
@@ -287,6 +307,268 @@ describe("SyncAccumulator", function () {
        expect(sa.getJSON().accountData[0]).toEqual(acc2);
    });

+    it("should delete invite room when invite request is rejected", () => {
+        const initInviteState: IInviteState = {
+            events: [
+                {
+                    content: {
+                        membership: "invite",
+                    },
+                    state_key: "bob",
+                    sender: "alice",
+                    type: "m.room.member",
+                },
+            ],
+        };
+
+        sa.accumulate(
+            syncSkeleton(
+                {},
+                {
+                    "!invite:bar": {
+                        invite_state: initInviteState,
+                    },
+                },
+            ),
+        );
+        expect(sa.getJSON().roomsData.invite["!invite:bar"].invite_state).toBe(initInviteState);
+
+        const rejectMemberEvent: IStateEvent = {
+            event_id: "$" + Math.random(),
+            content: {
+                membership: "leave",
+            },
+            origin_server_ts: 123456789,
+            state_key: "bob",
+            sender: "bob",
+            type: "m.room.member",
+            unsigned: {
+                prev_content: {
+                    membership: "invite",
+                },
+            },
+        };
+        const leftRoomState = leftRoomSkeleton([rejectMemberEvent]);
+
+        // bob rejects invite
+        sa.accumulate(
+            syncSkeleton(
+                {},
+                {},
+                {
+                    "!invite:bar": leftRoomState,
+                },
+            ),
+        );
+
+        expect(sa.getJSON().roomsData.invite["!invite:bar"]).toBeUndefined();
+    });
+
+    it("should accumulate knock state", () => {
+        const initKnockState = {
+            events: [member("alice", "knock")],
+        };
+        sa.accumulate(
+            syncSkeleton(
+                {},
+                {},
+                {},
+                {
+                    knock_state: initKnockState,
+                },
+            ),
+        );
+        expect(sa.getJSON().roomsData.knock["!knock:bar"].knock_state).toBe(initKnockState);
+
+        sa.accumulate(
+            syncSkeleton(
+                {},
+                {},
+                {},
+                {
+                    knock_state: {
+                        events: [
+                            utils.mkEvent({
+                                user: "alice",
+                                room: "!knock:bar",
+                                type: "m.room.name",
+                                content: {
+                                    name: "Room 1",
+                                },
+                            }) as IStrippedState,
+                        ],
+                    },
+                },
+            ),
+        );
+
+        expect(
+            sa.getJSON().roomsData.knock["!knock:bar"].knock_state.events.find((e) => e.type === "m.room.name")?.content
+                .name,
+        ).toEqual("Room 1");
+
+        sa.accumulate(
+            syncSkeleton(
+                {},
+                {},
+                {},
+                {
+                    knock_state: {
+                        events: [
+                            utils.mkEvent({
+                                user: "alice",
+                                room: "!knock:bar",
+                                type: "m.room.name",
+                                content: {
+                                    name: "Room 2",
+                                },
+                            }) as IStrippedState,
+                        ],
+                    },
+                },
+            ),
+        );
+
+        expect(
+            sa.getJSON().roomsData.knock["!knock:bar"].knock_state.events.find((e) => e.type === "m.room.name")?.content
+                .name,
+        ).toEqual("Room 2");
+    });
+
+    it("should delete knocked room when knock request is approved", () => {
+        const initKnockState = makeKnockState();
+        sa.accumulate(
+            syncSkeleton(
+                {},
+                {},
+                {},
+                {
+                    knock_state: initKnockState,
+                },
+            ),
+        );
+        expect(sa.getJSON().roomsData.knock["!knock:bar"].knock_state).toBe(initKnockState);
+
+        // alice approves bob's knock request
+        const inviteStateEvents = [
+            {
+                content: {
+                    membership: "invite",
+                },
+                state_key: "bob",
+                sender: "alice",
+                type: "m.room.member",
+            },
+        ];
+        sa.accumulate(
+            syncSkeleton(
+                {},
+                {
+                    "!knock:bar": {
+                        invite_state: {
+                            events: inviteStateEvents,
+                        },
+                    },
+                },
+            ),
+        );
+
+        expect(sa.getJSON().roomsData.knock["!knock:bar"]).toBeUndefined();
+        expect(sa.getJSON().roomsData.invite["!knock:bar"].invite_state.events).toEqual(inviteStateEvents);
+    });
+
+    it("should delete knocked room when knock request is cancelled by user himself", () => {
+        // bob cancels his knock state
+        const memberEvent: IStateEvent = {
+            event_id: "$" + Math.random(),
+            content: {
+                membership: "leave",
+            },
+            origin_server_ts: 123456789,
+            state_key: "bob",
+            sender: "bob",
+            type: "m.room.member",
+            unsigned: {
+                prev_content: {
+                    membership: "knock",
+                },
+            },
+        };
+        const leftRoomState = leftRoomSkeleton([memberEvent]);
+
+        const initKnockState = makeKnockState();
+        sa.accumulate(
+            syncSkeleton(
+                {},
+                {},
+                {},
+                {
+                    knock_state: initKnockState,
+                },
+            ),
+        );
+        expect(sa.getJSON().roomsData.knock["!knock:bar"].knock_state).toBe(initKnockState);
+
+        // bob cancels his knock request
+        sa.accumulate(
+            syncSkeleton(
+                {},
+                {},
+                {
+                    "!knock:bar": leftRoomState,
+                },
+            ),
+        );
+
+        expect(sa.getJSON().roomsData.knock["!knock:bar"]).toBeUndefined();
+    });
+
+    it("should delete knocked room when knock request is denied by another user", () => {
+        // alice denies bob knock state
+        const memberEvent: IStateEvent = {
+            event_id: "$" + Math.random(),
+            content: {
+                membership: "leave",
+            },
+            origin_server_ts: 123456789,
+            state_key: "bob",
+            sender: "alice",
+            type: "m.room.member",
+            unsigned: {
+                prev_content: {
+                    membership: "knock",
+                },
+            },
+        };
+        const leftRoomState = leftRoomSkeleton([memberEvent]);
+
+        const initKnockState = makeKnockState();
+        sa.accumulate(
+            syncSkeleton(
+                {},
+                {},
+                {},
+                {
+                    knock_state: initKnockState,
+                },
+            ),
+        );
+        expect(sa.getJSON().roomsData.knock["!knock:bar"].knock_state).toBe(initKnockState);
+
+        // alice denies bob's knock request
+        sa.accumulate(
+            syncSkeleton(
+                {},
+                {},
+                {
+                    "!knock:bar": leftRoomState,
+                },
+            ),
+        );
+
+        expect(sa.getJSON().roomsData.knock["!knock:bar"]).toBeUndefined();
+    });
+
    it("should accumulate read receipts", () => {
        const receipt1 = {
            type: "m.receipt",
@@ -601,7 +883,12 @@ describe("SyncAccumulator", function () {
    });
 });

-function syncSkeleton(joinObj: Partial<IJoinedRoom>): ISyncResponse {
+function syncSkeleton(
+    joinObj: Partial<IJoinedRoom>,
+    invite?: Record<string, IInvitedRoom>,
+    leave?: Record<string, ILeftRoom>,
+    knockObj?: Partial<IKnockedRoom>,
+): ISyncResponse {
    joinObj = joinObj || {};
    return {
        next_batch: "abc",
@@ -609,10 +896,48 @@ function syncSkeleton(joinObj: Partial<IJoinedRoom>): ISyncResponse {
            join: {
                "!foo:bar": joinObj,
            },
+            invite,
+            leave,
+            knock: knockObj
+                ? {
+                      "!knock:bar": knockObj,
+                  }
+                : undefined,
        },
    } as unknown as ISyncResponse;
 }

+function leftRoomSkeleton(timelineEvents: Array<IRoomEvent | IStateEvent> = []): ILeftRoom {
+    return {
+        state: {
+            events: [],
+        },
+        timeline: {
+            events: timelineEvents,
+            prev_batch: "something",
+        },
+        account_data: {
+            events: [],
+        },
+    };
+}
+
+function makeKnockState(): IKnockState {
+    return {
+        events: [
+            utils.mkEvent({
+                user: "alice",
+                room: "!knock:bar",
+                type: "m.room.name",
+                content: {
+                    name: "Room",
+                },
+            }) as IStrippedState,
+            member("bob", "knock"),
+        ],
+    };
+}
+
 function msg(localpart: string, text: string) {
    return {
        event_id: "$" + Math.random(),
@@ -30,14 +30,14 @@ import {
    sortEventsByLatestContentTimestamp,
    safeSet,
    MapWithDefault,
+    globToRegexp,
+    escapeRegExp,
 } from "../../src/utils";
 import { logger } from "../../src/logger";
 import { mkMessage } from "../test-utils/test-utils";
 import { makeBeaconEvent } from "../test-utils/beacon";
 import { ReceiptType } from "../../src/@types/read_receipts";

-// TODO: Fix types throughout
-
 describe("utils", function () {
    describe("encodeParams", function () {
        it("should url encode and concat with &s", function () {
@@ -725,4 +725,19 @@ describe("utils", function () {
            await utils.immediate();
        });
    });
+
+    describe("escapeRegExp", () => {
+        it("should escape XYZ", () => {
+            expect(escapeRegExp("[FIT-Connect Zustelldienst \\(Testumgebung\\)]")).toMatchInlineSnapshot(
+                `"\\[FIT-Connect Zustelldienst \\\\\\(Testumgebung\\\\\\)\\]"`,
+            );
+        });
+    });
+
+    describe("globToRegexp", () => {
+        it("should not explode when given regexes as globs", () => {
+            const result = globToRegexp("[FIT-Connect Zustelldienst \\(Testumgebung\\)]");
+            expect(result).toMatchInlineSnapshot(`"\\[FIT-Connect Zustelldienst \\\\\\(Testumgebung\\\\\\)\\]"`);
+        });
+    });
 });
@@ -47,6 +47,7 @@ import {
 } from "../../test-utils/webrtc";
 import { CallFeed } from "../../../src/webrtc/callFeed";
 import { EventType, IContent, ISendEventResponse, MatrixEvent, Room } from "../../../src";
+import { emitPromise } from "../../test-utils/test-utils";

 const FAKE_ROOM_ID = "!foo:bar";
 const CALL_LIFETIME = 60000;
@@ -1054,14 +1055,7 @@ describe("Call", function () {

            mockSendEvent.mockReset();

-            let caught = false;
-            try {
-                call.reject();
-            } catch (e) {
-                caught = true;
-            }
-
-            expect(caught).toEqual(true);
+            expect(() => call.reject()).toThrow();
            expect(client.client.sendEvent).not.toHaveBeenCalled();

            call.hangup(CallErrorCode.UserHangup, true);
@@ -1614,7 +1608,7 @@ describe("Call", function () {
    it("throws when there is no error listener", async () => {
        call.off(CallEvent.Error, errorListener);

-        expect(call.placeVoiceCall()).rejects.toThrow();
+        await expect(call.placeVoiceCall()).rejects.toThrow();
    });

    describe("hasPeerConnection()", () => {
@@ -1819,4 +1813,30 @@ describe("Call", function () {
            expect(call.peerConn?.setRemoteDescription).toHaveBeenCalled();
        });
    });
+
+    it("should emit IceFailed error on the successor call if RTCPeerConnection throws", async () => {
+        // @ts-ignore - writing to window as we are simulating browser edge-cases
+        global.window = {};
+        Object.defineProperty(global.window, "RTCPeerConnection", {
+            get: () => {
+                throw Error("Secure mode, naaah!");
+            },
+        });
+
+        const call = new MatrixCall({
+            client: client.client,
+            roomId: "!room_id",
+        });
+        const successor = new MatrixCall({
+            client: client.client,
+            roomId: "!room_id",
+        });
+        call.replacedBy(successor);
+
+        const prom = emitPromise(successor, CallEvent.Error);
+        call.placeCall(true, true);
+
+        const err = await prom;
+        expect(err.code).toBe(CallErrorCode.IceFailed);
+    });
 });
@@ -18,25 +18,25 @@ import { mocked } from "jest-mock";

 import { EventType, GroupCallIntent, GroupCallType, MatrixCall, MatrixEvent, Room, RoomMember } from "../../../src";
 import { RoomStateEvent } from "../../../src/models/room-state";
-import { GroupCall, GroupCallEvent, GroupCallState } from "../../../src/webrtc/groupCall";
+import { GroupCall, GroupCallEvent, GroupCallState, GroupCallStatsReportEvent } from "../../../src/webrtc/groupCall";
 import { IMyDevice, MatrixClient } from "../../../src/client";
 import {
+    FAKE_CONF_ID,
+    FAKE_DEVICE_ID_1,
+    FAKE_DEVICE_ID_2,
+    FAKE_ROOM_ID,
+    FAKE_SESSION_ID_1,
+    FAKE_SESSION_ID_2,
+    FAKE_USER_ID_1,
+    FAKE_USER_ID_2,
+    FAKE_USER_ID_3,
    installWebRTCMocks,
    MockCallFeed,
    MockCallMatrixClient,
+    MockMatrixCall,
    MockMediaStream,
    MockMediaStreamTrack,
    MockRTCPeerConnection,
-    MockMatrixCall,
-    FAKE_ROOM_ID,
-    FAKE_USER_ID_1,
-    FAKE_CONF_ID,
-    FAKE_DEVICE_ID_2,
-    FAKE_SESSION_ID_2,
-    FAKE_USER_ID_2,
-    FAKE_DEVICE_ID_1,
-    FAKE_SESSION_ID_1,
-    FAKE_USER_ID_3,
 } from "../../test-utils/webrtc";
 import { SDPStreamMetadataKey, SDPStreamMetadataPurpose } from "../../../src/webrtc/callEventTypes";
 import { sleep } from "../../../src/utils";
@@ -44,6 +44,9 @@ import { CallEventHandlerEvent } from "../../../src/webrtc/callEventHandler";
 import { CallFeed } from "../../../src/webrtc/callFeed";
 import { CallEvent, CallState } from "../../../src/webrtc/call";
 import { flushPromises } from "../../test-utils/flushPromises";
+import { CallFeedReport } from "../../../src/webrtc/stats/statsReport";
+import { CallFeedStatsReporter } from "../../../src/webrtc/stats/callFeedStatsReporter";
+import { StatsReportEmitter } from "../../../src/webrtc/stats/statsReportEmitter";

 const FAKE_STATE_EVENTS = [
    {
@@ -186,10 +189,7 @@ describe("Group Call", function () {
        it("sets state to local call feed uninitialized when getUserMedia() fails", async () => {
            jest.spyOn(mockClient.getMediaHandler(), "getUserMediaStream").mockRejectedValue("Error");

-            try {
-                await groupCall.initLocalCallFeed();
-            } catch (e) {}
-
+            await expect(groupCall.initLocalCallFeed()).rejects.toBeTruthy();
            expect(groupCall.state).toBe(GroupCallState.LocalCallFeedUninitialized);
        });

@@ -1729,4 +1729,89 @@ describe("Group Call", function () {
            expect(start).toHaveBeenCalled();
        });
    });
+
+    describe("as stats event listener and a CallFeedReport was triggered", () => {
+        let groupCall: GroupCall;
+        let reportEmitter: StatsReportEmitter;
+        const report: CallFeedReport = {} as CallFeedReport;
+        beforeEach(async () => {
+            CallFeedStatsReporter.expandCallFeedReport = jest.fn().mockReturnValue(report);
+            const typedMockClient = new MockCallMatrixClient(FAKE_USER_ID_1, FAKE_DEVICE_ID_1, FAKE_SESSION_ID_1);
+            const mockClient = typedMockClient.typed();
+            const room = new Room(FAKE_ROOM_ID, mockClient, FAKE_USER_ID_1);
+            room.currentState.members[FAKE_USER_ID_1] = {
+                userId: FAKE_USER_ID_1,
+                membership: "join",
+            } as unknown as RoomMember;
+            room.currentState.members[FAKE_USER_ID_2] = {
+                userId: FAKE_USER_ID_2,
+                membership: "join",
+            } as unknown as RoomMember;
+            room.currentState.getStateEvents = jest.fn().mockImplementation(mockGetStateEvents());
+            groupCall = await createAndEnterGroupCall(mockClient, room);
+            reportEmitter = groupCall.getGroupCallStats().reports;
+        });
+
+        it("should not extends with feed stats if no call exists", async () => {
+            const testPromise = new Promise<void>((done) => {
+                groupCall.on(GroupCallStatsReportEvent.CallFeedStats, () => {
+                    expect(CallFeedStatsReporter.expandCallFeedReport).toHaveBeenCalledWith({}, [], "from-call-feed");
+                    done();
+                });
+            });
+            const report: CallFeedReport = {} as CallFeedReport;
+            reportEmitter.emitCallFeedReport(report);
+            await testPromise;
+        });
+
+        it("and a CallFeedReport was triggered then it should extends with local feed", async () => {
+            const localCallFeed = {} as CallFeed;
+            groupCall.localCallFeed = localCallFeed;
+
+            const testPromise = new Promise<void>((done) => {
+                groupCall.on(GroupCallStatsReportEvent.CallFeedStats, () => {
+                    expect(CallFeedStatsReporter.expandCallFeedReport).toHaveBeenCalledWith(
+                        report,
+                        [localCallFeed],
+                        "from-local-feed",
+                    );
+                    expect(CallFeedStatsReporter.expandCallFeedReport).toHaveBeenCalledWith(
+                        report,
+                        [],
+                        "from-call-feed",
+                    );
+                    done();
+                });
+            });
+            const report: CallFeedReport = {} as CallFeedReport;
+            reportEmitter.emitCallFeedReport(report);
+            await testPromise;
+        });
+
+        it("and a CallFeedReport was triggered then it should extends with remote feed", async () => {
+            const localCallFeed = {} as CallFeed;
+            groupCall.localCallFeed = localCallFeed;
+            // @ts-ignore Suppress error because access to private property
+            const call = groupCall.calls.get(FAKE_USER_ID_2)!.get(FAKE_DEVICE_ID_2)!;
+            report.callId = call.callId;
+            const feeds = call.getFeeds();
+            const testPromise = new Promise<void>((done) => {
+                groupCall.on(GroupCallStatsReportEvent.CallFeedStats, () => {
+                    expect(CallFeedStatsReporter.expandCallFeedReport).toHaveBeenCalledWith(
+                        report,
+                        [localCallFeed],
+                        "from-local-feed",
+                    );
+                    expect(CallFeedStatsReporter.expandCallFeedReport).toHaveBeenCalledWith(
+                        report,
+                        feeds,
+                        "from-call-feed",
+                    );
+                    done();
+                });
+            });
+            reportEmitter.emitCallFeedReport(report);
+            await testPromise;
+        });
+    });
 });
@@ -71,7 +71,8 @@ describe("Group Call Event Handler", function () {
            getMember: (userId: string) => (userId === FAKE_USER_ID ? mockMember : null),
        } as unknown as Room;

-        (mockClient as any).getRoom = jest.fn().mockReturnValue(mockRoom);
+        mockClient.getRoom = jest.fn().mockReturnValue(mockRoom);
+        mockClient.getFoci.mockReturnValue([{}]);
    });

    describe("reacts to state changes", () => {
@@ -0,0 +1,110 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`CallFeedStatsReporter should builds CallFeedReport 1`] = `
+{
+  "callFeeds": [],
+  "callId": "CALL_ID",
+  "opponentMemberId": "USER_ID",
+  "transceiver": [
+    {
+      "currentDirection": "sendonly",
+      "direction": "sendrecv",
+      "mid": "0",
+      "receiver": {
+        "constrainDeviceId": "constrainDeviceId-receiver_audio_0",
+        "enabled": true,
+        "id": "receiver_audio_0",
+        "kind": "audio",
+        "label": "receiver",
+        "muted": false,
+        "readyState": "live",
+        "settingDeviceId": "settingDeviceId-receiver_audio_0",
+      },
+      "sender": {
+        "constrainDeviceId": "constrainDeviceId-sender_audio_0",
+        "enabled": true,
+        "id": "sender_audio_0",
+        "kind": "audio",
+        "label": "sender",
+        "muted": false,
+        "readyState": "live",
+        "settingDeviceId": "settingDeviceId-sender_audio_0",
+      },
+    },
+    {
+      "currentDirection": "sendrecv",
+      "direction": "recvonly",
+      "mid": "1",
+      "receiver": {
+        "constrainDeviceId": "constrainDeviceId-receiver_video_1",
+        "enabled": true,
+        "id": "receiver_video_1",
+        "kind": "video",
+        "label": "receiver",
+        "muted": false,
+        "readyState": "live",
+        "settingDeviceId": "settingDeviceId-receiver_video_1",
+      },
+      "sender": {
+        "constrainDeviceId": "constrainDeviceId-sender_video_1",
+        "enabled": true,
+        "id": "sender_video_1",
+        "kind": "video",
+        "label": "sender",
+        "muted": false,
+        "readyState": "live",
+        "settingDeviceId": "settingDeviceId-sender_video_1",
+      },
+    },
+    {
+      "currentDirection": "recvonly",
+      "direction": "recvonly",
+      "mid": "2",
+      "receiver": {
+        "constrainDeviceId": "constrainDeviceId-receiver_video_2",
+        "enabled": true,
+        "id": "receiver_video_2",
+        "kind": "video",
+        "label": "receiver",
+        "muted": false,
+        "readyState": "live",
+        "settingDeviceId": "settingDeviceId-receiver_video_2",
+      },
+      "sender": null,
+    },
+  ],
+}
+`;
+
+exports[`CallFeedStatsReporter should extends CallFeedReport with call feeds 1`] = `
+[
+  {
+    "audio": {
+      "constrainDeviceId": "constrainDeviceId-video-1",
+      "enabled": true,
+      "id": "video-1",
+      "kind": "video",
+      "label": "--",
+      "muted": false,
+      "readyState": "live",
+      "settingDeviceId": "settingDeviceId-video-1",
+    },
+    "isAudioMuted": true,
+    "isVideoMuted": false,
+    "prefix": "unknown",
+    "purpose": undefined,
+    "stream": "stream-1",
+    "type": "local",
+    "video": {
+      "constrainDeviceId": "constrainDeviceId-audio-1",
+      "enabled": true,
+      "id": "audio-1",
+      "kind": "audio",
+      "label": "--",
+      "muted": false,
+      "readyState": "live",
+      "settingDeviceId": "settingDeviceId-audio-1",
+    },
+  },
+]
+`;
@@ -0,0 +1,117 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+import { CallFeedStatsReporter } from "../../../../src/webrtc/stats/callFeedStatsReporter";
+import { CallFeedReport } from "../../../../src/webrtc/stats/statsReport";
+import { CallFeed } from "../../../../src/webrtc/callFeed";
+
+const CALL_ID = "CALL_ID";
+const USER_ID = "USER_ID";
+describe("CallFeedStatsReporter", () => {
+    let rtcSpy: RTCPeerConnection;
+    beforeEach(() => {
+        rtcSpy = {} as RTCPeerConnection;
+        rtcSpy.getTransceivers = jest.fn().mockReturnValue(buildTransceiverMocks());
+    });
+
+    describe("should", () => {
+        it("builds CallFeedReport", async () => {
+            expect(CallFeedStatsReporter.buildCallFeedReport(CALL_ID, USER_ID, rtcSpy)).toMatchSnapshot();
+        });
+
+        it("extends CallFeedReport with call feeds", async () => {
+            const feed = buildCallFeedMock("1");
+            const callFeedList: CallFeed[] = [feed];
+            const report = {
+                callId: "callId",
+                opponentMemberId: "opponentMemberId",
+                transceiver: [],
+                callFeeds: [],
+            } as CallFeedReport;
+
+            expect(CallFeedStatsReporter.expandCallFeedReport(report, callFeedList).callFeeds).toMatchSnapshot();
+        });
+    });
+
+    const buildTransceiverMocks = (): RTCRtpTransceiver[] => {
+        const trans1 = {
+            mid: "0",
+            direction: "sendrecv",
+            currentDirection: "sendonly",
+            sender: buildSenderMock("sender_audio_0", "audio"),
+            receiver: buildReceiverMock("receiver_audio_0", "audio"),
+        } as RTCRtpTransceiver;
+        const trans2 = {
+            mid: "1",
+            direction: "recvonly",
+            currentDirection: "sendrecv",
+            sender: buildSenderMock("sender_video_1", "video"),
+            receiver: buildReceiverMock("receiver_video_1", "video"),
+        } as RTCRtpTransceiver;
+        const trans3 = {
+            mid: "2",
+            direction: "recvonly",
+            currentDirection: "recvonly",
+            sender: { track: null } as RTCRtpSender,
+            receiver: buildReceiverMock("receiver_video_2", "video"),
+        } as RTCRtpTransceiver;
+        return [trans1, trans2, trans3];
+    };
+
+    const buildSenderMock = (id: string, kind: "audio" | "video"): RTCRtpSender => {
+        const track = buildTrackMock(id, kind);
+        return {
+            track,
+        } as RTCRtpSender;
+    };
+
+    const buildReceiverMock = (id: string, kind: "audio" | "video"): RTCRtpReceiver => {
+        const track = buildTrackMock(id, kind);
+        return {
+            track,
+        } as RTCRtpReceiver;
+    };
+
+    const buildTrackMock = (id: string, kind: "audio" | "video"): MediaStreamTrack => {
+        return {
+            id,
+            kind,
+            enabled: true,
+            label: "--",
+            muted: false,
+            readyState: "live",
+            getSettings: () => ({ deviceId: `settingDeviceId-${id}` }),
+            getConstraints: () => ({ deviceId: `constrainDeviceId-${id}` }),
+        } as MediaStreamTrack;
+    };
+
+    const buildCallFeedMock = (id: string, isLocal = true): CallFeed => {
+        const stream = {
+            id: `stream-${id}`,
+            getAudioTracks(): MediaStreamTrack[] {
+                return [buildTrackMock(`video-${id}`, "video")];
+            },
+            getVideoTracks(): MediaStreamTrack[] {
+                return [buildTrackMock(`audio-${id}`, "audio")];
+            },
+        } as MediaStream;
+        return {
+            stream,
+            isLocal: () => isLocal,
+            isVideoMuted: () => false,
+            isAudioMuted: () => true,
+        } as CallFeed;
+    };
+});
@@ -0,0 +1,256 @@
+/*
+Copyright 2023 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { CallStatsReportGatherer } from "../../../../src/webrtc/stats/callStatsReportGatherer";
+import { StatsReportEmitter } from "../../../../src/webrtc/stats/statsReportEmitter";
+import { MediaSsrcHandler } from "../../../../src/webrtc/stats/media/mediaSsrcHandler";
+import { currentChromeReport, prevChromeReport } from "../../../test-utils/webrtcReports";
+import { MockRTCPeerConnection } from "../../../test-utils/webrtc";
+
+const CALL_ID = "CALL_ID";
+const USER_ID = "USER_ID";
+
+describe("CallStatsReportGatherer", () => {
+    let collector: CallStatsReportGatherer;
+    let rtcSpy: RTCPeerConnection;
+    let emitter: StatsReportEmitter;
+    beforeEach(() => {
+        rtcSpy = { getStats: () => new Promise<RTCStatsReport>(() => null) } as RTCPeerConnection;
+        rtcSpy.addEventListener = jest.fn();
+        rtcSpy.getTransceivers = jest.fn().mockReturnValue([]);
+        emitter = new StatsReportEmitter();
+        collector = new CallStatsReportGatherer(CALL_ID, USER_ID, rtcSpy, emitter);
+    });
+
+    describe("on process stats", () => {
+        it("if active calculate stats reports", async () => {
+            const getStats = jest.spyOn(rtcSpy, "getStats");
+            const report = {} as RTCStatsReport;
+            report.forEach = jest.fn().mockReturnValue([]);
+            getStats.mockResolvedValue(report);
+            const actual = await collector.processStats("GROUP_CALL_ID", "LOCAL_USER_ID");
+            expect(getStats).toHaveBeenCalled();
+            expect(actual).toEqual({
+                isFirstCollection: true,
+                receivedMedia: 0,
+                receivedAudioMedia: 0,
+                receivedVideoMedia: 0,
+                audioTrackSummary: {
+                    count: 0,
+                    muted: 0,
+                    maxJitter: 0,
+                    maxPacketLoss: 0,
+                    concealedAudio: 0,
+                    totalAudio: 0,
+                },
+                videoTrackSummary: {
+                    count: 0,
+                    muted: 0,
+                    maxJitter: 0,
+                    maxPacketLoss: 0,
+                    concealedAudio: 0,
+                    totalAudio: 0,
+                },
+            });
+            expect(collector.getActive()).toBeTruthy();
+        });
+
+        it("if not active do not calculate stats reports", async () => {
+            collector.setActive(false);
+            const getStats = jest.spyOn(rtcSpy, "getStats");
+            await collector.processStats("GROUP_CALL_ID", "LOCAL_USER_ID");
+            expect(getStats).not.toHaveBeenCalled();
+        });
+
+        it("if get reports fails, the collector becomes inactive", async () => {
+            expect(collector.getActive()).toBeTruthy();
+            const getStats = jest.spyOn(rtcSpy, "getStats");
+            getStats.mockRejectedValue(new Error("unknown"));
+            await collector.processStats("GROUP_CALL_ID", "LOCAL_USER_ID");
+            expect(getStats).toHaveBeenCalled();
+            expect(collector.getActive()).toBeFalsy();
+        });
+
+        it("if active and getStats returns not an RTCStatsReport inside a promise the collector fails and becomes inactive", async () => {
+            const getStats = jest.spyOn(rtcSpy, "getStats");
+            // @ts-ignore
+            getStats.mockReturnValue({});
+            const actual = await collector.processStats("GROUP_CALL_ID", "LOCAL_USER_ID");
+            expect(actual).toEqual({
+                isFirstCollection: true,
+                receivedMedia: 0,
+                receivedAudioMedia: 0,
+                receivedVideoMedia: 0,
+                audioTrackSummary: {
+                    count: 0,
+                    muted: 0,
+                    maxJitter: 0,
+                    maxPacketLoss: 0,
+                    concealedAudio: 0,
+                    totalAudio: 0,
+                },
+                videoTrackSummary: {
+                    count: 0,
+                    muted: 0,
+                    maxJitter: 0,
+                    maxPacketLoss: 0,
+                    concealedAudio: 0,
+                    totalAudio: 0,
+                },
+            });
+            expect(getStats).toHaveBeenCalled();
+            expect(collector.getActive()).toBeFalsy();
+        });
+
+        it("if active and the collector runs not the first time the Summery Stats is marked as not fits collection", async () => {
+            const getStats = jest.spyOn(rtcSpy, "getStats");
+            // @ts-ignore
+            collector.previousStatsReport = {} as RTCStatsReport;
+            const report = {} as RTCStatsReport;
+            report.forEach = jest.fn().mockReturnValue([]);
+            getStats.mockResolvedValue(report);
+            const actual = await collector.processStats("GROUP_CALL_ID", "LOCAL_USER_ID");
+            expect(getStats).toHaveBeenCalled();
+            expect(actual).toEqual({
+                isFirstCollection: false,
+                receivedMedia: 0,
+                receivedAudioMedia: 0,
+                receivedVideoMedia: 0,
+                audioTrackSummary: {
+                    count: 0,
+                    muted: 0,
+                    maxJitter: 0,
+                    maxPacketLoss: 0,
+                    concealedAudio: 0,
+                    totalAudio: 0,
+                },
+                videoTrackSummary: {
+                    count: 0,
+                    muted: 0,
+                    maxJitter: 0,
+                    maxPacketLoss: 0,
+                    concealedAudio: 0,
+                    totalAudio: 0,
+                },
+            });
+            expect(collector.getActive()).toBeTruthy();
+        });
+
+        describe("should not only produce a call summary stat but also", () => {
+            const wantedSummaryReport = {
+                isFirstCollection: false,
+                audioTrackSummary: {
+                    concealedAudio: 0,
+                    count: 0,
+                    maxJitter: 0,
+                    maxPacketLoss: 0,
+                    muted: 0,
+                    totalAudio: 0,
+                },
+                receivedAudioMedia: 0,
+                receivedMedia: 0,
+                receivedVideoMedia: 0,
+                videoTrackSummary: {
+                    concealedAudio: 0,
+                    count: 0,
+                    maxJitter: 0,
+                    maxPacketLoss: 0,
+                    muted: 0,
+                    totalAudio: 0,
+                },
+            };
+            beforeEach(() => {
+                rtcSpy = new MockRTCPeerConnection() as unknown as RTCPeerConnection;
+                collector = new CallStatsReportGatherer(CALL_ID, USER_ID, rtcSpy, emitter);
+                const getStats = jest.spyOn(rtcSpy, "getStats");
+
+                const previous = prevChromeReport as unknown as RTCStatsReport;
+                previous.get = (id: string) => {
+                    return prevChromeReport.find((data) => data.id === id);
+                };
+                // @ts-ignore
+                collector.previousStatsReport = previous;
+
+                const current = currentChromeReport as unknown as RTCStatsReport;
+                current.get = (id: string) => {
+                    return currentChromeReport.find((data) => data.id === id);
+                };
+
+                // @ts-ignore
+                getStats.mockResolvedValue(current);
+            });
+
+            it("emit byteSentStatsReport", async () => {
+                const emitByteSendReport = jest.spyOn(emitter, "emitByteSendReport");
+                const actual = await collector.processStats("GROUP_CALL_ID", "LOCAL_USER_ID");
+                expect(actual).toEqual(wantedSummaryReport);
+                expect(emitByteSendReport).toHaveBeenCalled();
+            });
+            it("emit emitConnectionStatsReport", async () => {
+                const emitConnectionStatsReport = jest.spyOn(emitter, "emitConnectionStatsReport");
+                const actual = await collector.processStats("GROUP_CALL_ID", "LOCAL_USER_ID");
+                expect(actual).toEqual(wantedSummaryReport);
+                expect(emitConnectionStatsReport).toHaveBeenCalled();
+            });
+            it("emit callFeedStatsReport", async () => {
+                const emitCallFeedReport = jest.spyOn(emitter, "emitCallFeedReport");
+                const actual = await collector.processStats("GROUP_CALL_ID", "LOCAL_USER_ID");
+                expect(actual).toEqual(wantedSummaryReport);
+                expect(emitCallFeedReport).toHaveBeenCalled();
+            });
+        });
+    });
+
+    describe("on signal state change event", () => {
+        let events: { [key: string]: any };
+        beforeEach(() => {
+            events = [];
+            // Define the addEventListener method with a Jest mock function
+            rtcSpy.addEventListener = jest.fn((event: any, callback: any) => {
+                events[event] = callback;
+            });
+
+            collector = new CallStatsReportGatherer(CALL_ID, USER_ID, rtcSpy, emitter);
+        });
+        it("in case of stable, parse remote and local description", () => {
+            // @ts-ignore
+            const mediaSsrcHandler = {
+                parse: jest.fn(),
+                ssrcToMid: jest.fn(),
+                findMidBySsrc: jest.fn(),
+                getSsrcToMidMap: jest.fn(),
+            } as MediaSsrcHandler;
+
+            const remoteSDP = "sdp";
+            const localSDP = "sdp";
+
+            // @ts-ignore
+            rtcSpy.signalingState = "stable";
+
+            // @ts-ignore
+            rtcSpy.currentRemoteDescription = <RTCSessionDescription>{ sdp: remoteSDP };
+            // @ts-ignore
+            rtcSpy.currentLocalDescription = <RTCSessionDescription>{ sdp: localSDP };
+
+            // @ts-ignore
+            collector.trackStats.mediaSsrcHandler = mediaSsrcHandler;
+
+            events["signalingstatechange"]();
+            expect(mediaSsrcHandler.parse).toHaveBeenCalledWith(remoteSDP, "remote");
+            expect(mediaSsrcHandler.parse).toHaveBeenCalledWith(localSDP, "local");
+        });
+    });
+});
@@ -16,7 +16,7 @@ limitations under the License.

 import { TrackID } from "../../../../src/webrtc/stats/statsReport";
 import { MediaTrackStats } from "../../../../src/webrtc/stats/media/mediaTrackStats";
-import { StatsReportBuilder } from "../../../../src/webrtc/stats/statsReportBuilder";
+import { ConnectionStatsReportBuilder } from "../../../../src/webrtc/stats/connectionStatsReportBuilder";

 describe("StatsReportBuilder", () => {
    const LOCAL_VIDEO_TRACK_ID = "LOCAL_VIDEO_TRACK_ID";
@@ -39,7 +39,7 @@ describe("StatsReportBuilder", () => {

    describe("should build stats", () => {
        it("by media track stats.", async () => {
-            expect(StatsReportBuilder.build(stats)).toEqual({
+            expect(ConnectionStatsReportBuilder.build(stats)).toEqual({
                bitrate: {
                    audio: {
                        download: 4000,
--- a/Show More
+++ b/Show More