# 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 to proper async testing with httpx_ws and threaded server pattern. All 6 tests now pass without event loop errors.

## Changes

- Rewrote all WebSocket tests to use aconnect_ws from httpx_ws
- Added chat_appserver fixture using threaded Uvicorn server (port 1256)
- Tests now use separate event loop in server thread
- Matches existing pattern from test_transcripts_rtc_ws.py

## Tests Passing

All 6 tests now pass:
1. test_chat_websocket_connection_success - validates WebSocket connection and echo behavior
2. test_chat_websocket_nonexistent_transcript - validates error handling for invalid transcript
3. test_chat_websocket_multiple_messages - validates handling multiple sequential messages
4. test_chat_websocket_disconnect_graceful - validates clean disconnection
5. test_chat_websocket_context_generation - validates WebVTT context generation
6. test_chat_websocket_unknown_message_type - validates echo for unknown message types
## Evidence
- Commits: 68df8257
- Tests: test_chat_websocket_connection_success, test_chat_websocket_nonexistent_transcript, test_chat_websocket_multiple_messages, test_chat_websocket_disconnect_graceful, test_chat_websocket_context_generation, test_chat_websocket_unknown_message_type
- PRs: