add tests

Author: ihrpr

src/mcp/server/session.py

@@ -286,6 +286,9 @@ async def send_progress_notification(
         related_request_id: str | None = None,
     ) -> None:
         """Send a progress notification."""
+        print(
+            f"Sending progress notification: {progress_token}, {progress}, {total}, {message}"
+        )
         await self.send_notification(
             types.ServerNotification(
                 types.ProgressNotification(