test: Test that the skip_auth option works correctly

crates/matrix-sdk/tests/integration/client.rs

@@ -1527,6 +1527,46 @@ async fn test_server_vendor_info() {
     assert_eq!(server_info.version, "1.70.0");
 }
 
+#[async_test]
+async fn test_server_version_without_auth() {
+    let server = MatrixMockServer::new().await;
+    let client = server.client_builder().build().await;
+
+    // If we provide an access token, we encounter a failure, likely because the
+    // token has expired.
+    Mock::given(method("GET"))
+        .and(path_regex(r"^/_matrix/client/versions"))
+        .and(header("authorization", "Bearer 1234"))
+        .respond_with(ResponseTemplate::new(401))
+        .mount(server.server())
+        .await;
+
+    // If we do not provide an access token, all is fine as the endpoint does not
+    // require one.
+    Mock::given(method("GET"))
+        .and(path_regex(r"^/_matrix/client/versions"))
+        .respond_with(ResponseTemplate::new(200).set_body_json(json!({
+            "versions": [
+                "r0.0.1",
+                "v1.1"
+            ]
+        })))
+        .mount(server.server())
+        .await;
+
+    let request_config = RequestConfig::new().disable_retry();
+    client
+        .fetch_server_versions(Some(request_config))
+        .await
+        .expect_err("We should fail here since we provided an auth token.");
+
+    let request_config = RequestConfig::new().disable_retry().skip_auth();
+    client
+        .fetch_server_versions(Some(request_config))
+        .await
+        .expect("We should not fail here since we did not provide an auth token.");
+}
+
 #[async_test]
 async fn test_server_vendor_info_with_missing_fields() {
     let server = MatrixMockServer::new().await;