Completely drop RootModel from types module (#1910)

tests/client/test_resource_cleanup.py

@@ -3,6 +3,7 @@ from unittest.mock import patch
 
 import anyio
 import pytest
+from pydantic import TypeAdapter
 
 from mcp.shared.message import SessionMessage
 from mcp.shared.session import BaseSession, RequestId, SendResultT
@@ -23,20 +24,23 @@ async def test_send_request_stream_cleanup():
         ) -> None:  # pragma: no cover
             pass
 
+        @property
+        def _receive_request_adapter(self) -> TypeAdapter[Any]:
+            return TypeAdapter(object)  # pragma: no cover
+
+        @property
+        def _receive_notification_adapter(self) -> TypeAdapter[Any]:
+            return TypeAdapter(object)  # pragma: no cover
+
     # Create streams
     write_stream_send, write_stream_receive = anyio.create_memory_object_stream[SessionMessage](1)
     read_stream_send, read_stream_receive = anyio.create_memory_object_stream[SessionMessage](1)
 
     # Create the session
-    session = TestSession(
-        read_stream_receive,
-        write_stream_send,
-        object,  # Request type doesn't matter for this test
-        object,  # Notification type doesn't matter for this test
-    )
+    session = TestSession(read_stream_receive, write_stream_send)
 
     # Create a test request
-    request = ClientRequest(PingRequest())
+    request = PingRequest()
 
     # Patch the _write_stream.send method to raise an exception
     async def mock_send(*args: Any, **kwargs: Any):