Suppress warning in test suite

Author: LucaButBoring

tests/server/test_session_tasks.py

@@ -12,6 +12,13 @@
 from mcp.shared.memory import create_client_server_memory_streams
 from mcp.shared.message import SessionMessage
 
+# Mark all tests in this module to ignore memory stream cleanup warnings
+# These occur with tg.cancel_scope.cancel() pattern, same as SDK's own
+# create_connected_server_and_client_session in src/mcp/shared/memory.py
+pytestmark = pytest.mark.filterwarnings(
+    "ignore:Exception ignored.*MemoryObject.*Stream:pytest.PytestUnraisableExceptionWarning"
+)
+
 
 @pytest.mark.anyio
 async def test_get_task_success_with_task_store():