refactor: remove excessive comments from test code

- Simplified docstrings to be more concise
- Removed obvious line comments that explain basic operations
- Kept only essential comments for complex logic
- Maintained comments that explain algorithms or non-obvious behavior

Based on research, the teardown errors are a known issue with pytest-asyncio
and SQLAlchemy async sessions. The recommended approach is to use session-scoped
event loops with NullPool, which we already have. The teardown errors don't
affect test results and are cosmetic issues related to event loop cleanup.

server/tests/test_attendee_parsing_bug.py

@@ -16,7 +16,6 @@ async def test_attendee_parsing_bug(session):
     The bug manifests as getting 29 attendees with emails like "M", "A", "I", etc.
     instead of properly parsed email addresses.
     """
-    # Create a test room
     room = await rooms_controller.add(
         session,
         name="test-room",
@@ -32,11 +31,8 @@ async def test_attendee_parsing_bug(session):
         ics_url="http://test.com/test.ics",
         ics_enabled=True,
     )
-
-    # Force flush to make room visible to other sessions
     await session.flush()
 
-    # Read the test ICS file that reproduces the bug and update it with current time
     from datetime import datetime, timedelta, timezone
 
     test_ics_path = os.path.join(
@@ -45,25 +41,19 @@ async def test_attendee_parsing_bug(session):
     with open(test_ics_path, "r") as f:
         ics_content = f.read()
 
-    # Replace the dates with current time + 1 hour to ensure it's within the 24h window
     now = datetime.now(timezone.utc)
     future_time = now + timedelta(hours=1)
     end_time = future_time + timedelta(hours=1)
 
-    # Format dates for ICS format
     dtstart = future_time.strftime("%Y%m%dT%H%M%SZ")
     dtend = end_time.strftime("%Y%m%dT%H%M%SZ")
     dtstamp = now.strftime("%Y%m%dT%H%M%SZ")
 
-    # Update the ICS content with current dates
     ics_content = ics_content.replace("20250910T180000Z", dtstart)
     ics_content = ics_content.replace("20250910T190000Z", dtend)
     ics_content = ics_content.replace("20250910T174000Z", dtstamp)
 
-    # Create sync service and mock the fetch
     sync_service = ICSSyncService()
-
-    # Mock the session factory to use our test session
     from contextlib import asynccontextmanager
     from unittest.mock import AsyncMock
 
@@ -71,7 +61,6 @@ async def test_attendee_parsing_bug(session):
     async def mock_session_context():
         yield session
 
-    # Create a mock sessionmaker that behaves like async_sessionmaker
     class MockSessionMaker:
         def __call__(self):
             return mock_session_context()
@@ -86,7 +75,6 @@ async def test_attendee_parsing_bug(session):
         ) as mock_fetch:
             mock_fetch.return_value = ics_content
 
-            # Debug: Parse the ICS content directly to examine attendee parsing
             calendar = sync_service.fetch_service.parse_ics(ics_content)
             from reflector.settings import settings
 
@@ -102,33 +90,23 @@ async def test_attendee_parsing_bug(session):
             print(f"Total events in calendar: {total_events}")
             print(f"Events matching room: {len(events)}")
 
-            # Perform the sync
             result = await sync_service.sync_room_calendar(room)
 
-            # Check that the sync succeeded
             assert result.get("status") == "success"
-            assert result.get("events_found", 0) >= 0  # Allow for debugging
+            assert result.get("events_found", 0) >= 0
 
-            # We already have the matching events from the debug code above
             assert len(events) == 1
             event = events[0]
 
-        # This is where the bug manifests - check the attendees
         attendees = event["attendees"]
 
-        # Debug output to see what's happening
         print(f"Number of attendees: {len(attendees)}")
         for i, attendee in enumerate(attendees):
             print(f"Attendee {i}: {attendee}")
 
-        # The comma-separated attendees should be parsed as individual attendees
-        # We expect 29 attendees from the comma-separated list + 1 organizer = 30 total
         assert len(attendees) == 30, f"Expected 30 attendees, got {len(attendees)}"
 
-        # Verify the attendees have correct email addresses (not single characters)
-        # Check that the first few attendees match what's in the ICS file
         assert attendees[0]["email"] == "alice@example.com"
         assert attendees[1]["email"] == "bob@example.com"
         assert attendees[2]["email"] == "charlie@example.com"
-        # The organizer should also be in the list
         assert any(att["email"] == "organizer@example.com" for att in attendees)