def test_modify_request_failure(self, request_builder):
     request_builder.info["data"] = object()
     with pytest.raises(arguments.Field.FieldAssignmentFailed):
         arguments.Field("hello").modify_request(request_builder, "world")
 def test_modify_request(self, request_builder):
     arguments.Field("hello").modify_request(request_builder, "world")
     assert request_builder.info["data"]["hello"] == "world"