supabase/apps/studio/lib/api/generate-v4.test.ts

import { safeSql } from '@supabase/pg-meta'
import { UIMessage } from 'ai'
import { expect, test, vi } from 'vitest'

import generateV4 from '../../pages/api/ai/sql/generate-v4'
import { getTools } from '@/lib/ai/tools'
import { sanitizeMessagePart } from '@/lib/ai/tools/tool-sanitizer'

vi.mock('@/lib/ai/tools/tool-sanitizer', () => ({
  sanitizeMessagePart: vi.fn((part) => part),
}))

vi.mock('@/lib/ai/ai-details', () => ({
  getAIDetails: vi.fn().mockResolvedValue({
    aiOptInLevel: 'schema_and_log_and_data',
    hasAccessToAdvanceModel: true,
    hasHipaaAddon: false,
    region: 'us-east-1',
    isSensitive: false,
  }),
}))

vi.mock('@/lib/ai/model', () => ({
  getModel: vi.fn().mockResolvedValue({
    modelParams: { model: {} },
    systemProviderOptions: {},
  }),
}))

vi.mock('@/data/sql/execute-sql-mutation', () => ({
  executeSql: vi.fn().mockResolvedValue({ result: [] }),
}))

vi.mock('@/lib/ai/tools', () => ({
  getTools: vi.fn().mockResolvedValue({}),
}))

vi.mock('ai', async () => {
  const actual = await vi.importActual('ai')
  return {
    ...actual,
    streamText: vi.fn().mockReturnValue({
      pipeUIMessageStreamToResponse: vi.fn(),
    }),
  }
})

test('generateV4 calls the tool sanitizer', async () => {
  const mockReq = {
    method: 'POST',
    headers: {
      authorization: 'Bearer test-token',
    },
    body: {
      messages: [
        {
          id: 'test-msg-id',
          role: 'assistant',
          parts: [
            {
              type: 'tool-execute_sql',
              state: 'output-available',
              toolCallId: 'test-tool-call-id',
              input: { sql: safeSql`SELECT * FROM users` },
              output: [{ id: 1, name: 'test-output' }],
            },
          ],
        },
      ] satisfies UIMessage[],
      projectRef: 'test-project',
      connectionString: 'test-connection',
      orgSlug: 'test-org',
      supportMode: true,
    },
    on: vi.fn(),
  }

  const mockRes = {
    status: vi.fn(() => mockRes),
    json: vi.fn(() => mockRes),
    setHeader: vi.fn(() => mockRes),
    on: vi.fn(),
  }

  await generateV4(mockReq as any, mockRes as any)

  expect(sanitizeMessagePart).toHaveBeenCalled()
  expect(getTools).toHaveBeenCalledWith(
    expect.objectContaining({
      supportMode: true,
    })
  )
  // The response 'close' event must be wired up so the remote MCP connection
  // opened in getTools is torn down when the stream finishes or the client drops
  expect(mockRes.on).toHaveBeenCalledWith('close', expect.any(Function))
})