Update tests/server/events/test_inmemory_queue_manager.py

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: HelloJowet

tests/server/events/test_inmemory_queue_manager.py

@@ -36,7 +36,7 @@ async def test_init(self, queue_manager: InMemoryQueueManager) -> None:
     @pytest.mark.asyncio
     async def test_add_new_queue(
         self, queue_manager: InMemoryQueueManager, event_queue: MagicMock
-    ):
+    ) -> None:
         """Test adding a new queue to the manager."""
         task_id = 'test_task_id'
         await queue_manager.add(task_id, event_queue)