Test script quality of life improvement

tests/conftest.py

@@ -66,7 +66,7 @@ def query(self, request: Optional[str], endl: str = '\n') -> str:
         """
         # Assert that we have not run out of responses
         # and that the request is the next one we expect
-        assert self.request_index < len(self.responses)
+        assert self.request_index < len(self.responses), f"Unexpected request: {request}"
         assert request == self.responses[self.request_index][0]
 
         # Fetch the response and increment the request index