include missing field specifier

Author: Jibola

tests/lookup_/tests.py

@@ -123,7 +123,7 @@ def _test_with_raw_data(self, model, test_function):
 
             for op, predicate in self._OPERATOR_PREDICATE_MAP.items():
                 with self.subTest(op=op):
-                    test_function(op, predicate)
+                    test_function(op, predicate, "title")
 
         finally:
             collection.delete_one({"_id": self.unique_id})