          """
          Ensure that valid values return the expected validated data.
          """
          for input_value, expected_output in get_items(self.valid_inputs):
              assert self.field.run_validation(input_value) == expected_output
  
      def test_invalid_inputs(self):
          """
          Ensure that invalid values raise the expected validation error.
          """
 
</s> remove             assert self.field.to_representation(output_value) == expected_output
 </s> add             assert self.field.to_representation(output_value) == expected_output, \
                'output value: {}'.format(repr(output_value)) </s> remove             assert exc_info.value.detail == expected_failure
 </s> add             assert exc_info.value.detail == expected_failure, \
                'input value: {}'.format(repr(input_value))
            assert self.field.run_validation(input_value) == expected_output, \
                'input value: {}'.format(repr(input_value))
          """
          Ensure that valid values return the expected validated data.
          """
          for input_value, expected_output in get_items(self.valid_inputs):
            assert self.field.run_validation(input_value) == expected_output, \
                'input value: {}'.format(repr(input_value))
  
      def test_invalid_inputs(self):
          """
          Ensure that invalid values raise the expected validation error.
          """
keep keep keep keep replace keep keep keep keep keep
 Add repr(value) to the assert msg in FieldValues 
tests/test_fields.py