- Add session-scoped event loop fixture to prevent 'Event loop is closed' errors
- Use NullPool for database connections to avoid asyncpg connection caching issues
- Override session.commit with flush in tests to maintain transaction rollback
- Configure pytest-asyncio with session-scoped loop defaults
- Fixes 'coroutine Connection._cancel was never awaited' warnings
- Properly dispose of database engines after each test
Results: 137 tests passing (up from 116), only 8 failures remaining
This addresses the SQLAlchemy 2.0 async session lifecycle issues with asyncpg
Mathieu Virbel
fb5bb39716