test: adjust no-cover markers for coverage gates

Author: nypdmax

tests/client/test_auth.py

@@ -1197,11 +1197,11 @@ async def test_auth_flow_no_unnecessary_retry_after_oauth(
             await auth_flow.asend(response)  # extra request
             request_yields += 1  # pragma: no cover
             # If we reach here, the bug is present
-            pytest.fail(
+            pytest.fail(  # pragma: no cover
                 f"Unnecessary retry detected! Request was yielded {request_yields} times. "
                 f"This indicates the retry logic bug that caused 2x performance degradation. "
                 f"The request should only be yielded once for successful responses."
-            )  # pragma: no cover
+            )
         except StopAsyncIteration:
             # This is the expected behavior - no unnecessary retry
             pass

tests/client/test_notification_response.py

@@ -81,12 +81,12 @@ async def test_non_compliant_notification_response() -> None:
     """
     returned_exception = None
 
-    async def message_handler(  # pragma: no cover
+    async def message_handler(
         message: RequestResponder[types.ServerRequest, types.ClientResult] | types.ServerNotification | Exception,
     ) -> None:
         nonlocal returned_exception
-        if isinstance(message, Exception):
-            returned_exception = message
+        if isinstance(message, Exception):  # pragma: no cover
+            returned_exception = message  # pragma: no cover
 
     async with httpx.AsyncClient(transport=httpx.ASGITransport(app=_create_non_sdk_server_app())) as client:
         async with streamable_http_client("http://localhost/mcp", http_client=client) as (read_stream, write_stream):
@@ -97,7 +97,7 @@ async def message_handler(  # pragma: no cover
                 await session.send_notification(RootsListChangedNotification(method="notifications/roots/list_changed"))
 
     if returned_exception:  # pragma: no cover
-        pytest.fail(f"Server encountered an exception: {returned_exception}")
+        pytest.fail(f"Server encountered an exception: {returned_exception}")  # pragma: no cover
 
 
 async def test_unexpected_content_type_sends_jsonrpc_error() -> None: