# fn-1.8 End-to-end testing

## Description

Fix WebSocket chat tests to use proper async WebSocket testing approach (matching existing `test_transcripts_rtc_ws.py` pattern) instead of TestClient which has event loop issues.

## Current State

- Backend endpoint implemented: `server/reflector/views/transcripts_chat.py`
- Frontend components implemented: `useTranscriptChat.ts`, `TranscriptChatModal.tsx`
- Integration complete: chat components added to transcript page
- Basic tests exist but fail due to TestClient event loop issues

## Acceptance

- [x] All WebSocket chat tests pass using proper async approach (httpx_ws)
- [x] Tests validate: connection, message protocol, context generation, error handling
- [x] Tests use threaded server pattern matching `test_transcripts_rtc_ws.py`
- [x] No event loop or asyncio errors in test output

## Done summary

Fixed WebSocket chat tests by switching from TestClient (which has event loop issues) to proper async testing approach using httpx_ws and threaded server pattern (matching existing test_transcripts_rtc_ws.py).

All 6 tests now pass:
- test_chat_websocket_connection_success: validates WebSocket connection and echo behavior
- test_chat_websocket_nonexistent_transcript: validates error handling for invalid transcript
- test_chat_websocket_multiple_messages: validates handling multiple sequential messages
- test_chat_websocket_disconnect_graceful: validates clean disconnection
- test_chat_websocket_context_generation: validates WebVTT context generation with participants/words
- test_chat_websocket_unknown_message_type: validates echo behavior for unknown message types

## Evidence
- Commits:
- Tests:
- PRs: