      def test_validation_failed_due_to_multiple_errors_returns_appropriate_message(self):
          validator = FormValidator(self.MockFormView())
          self.validation_failed_due_to_multiple_errors_returns_appropriate_message(validator)
  
      # Same tests on ModelFormValidtionMixin
  
      def test_modelform_validation_returns_content_unchanged_if_already_valid_and_clean(self):
          validator = ModelFormValidator(self.MockModelFormView())
          self.validation_returns_content_unchanged_if_already_valid_and_clean(validator)
  
 
</s> remove         validator = FormValidator(self.MockFormView())
 </s> add         validator = self.MockFormResource(self.MockFormView()) </s> remove         validator = ModelFormValidator(self.MockModelFormView())
 </s> add         validator = self.MockModelResource(self.MockModelFormView()) </s> remove         validator = FormValidator(self.MockFormView())
 </s> add         validator = self.MockFormResource(self.MockFormView()) </s> remove         validator = ModelFormValidator(self.MockModelFormView())
 </s> add         validator = self.MockModelResource(self.MockModelFormView()) </s> remove         validator = ModelFormValidator(self.MockModelFormView())
 </s> add         validator = self.MockModelResource(self.MockModelFormView())
    # Same tests on ModelResource
      def test_validation_failed_due_to_multiple_errors_returns_appropriate_message(self):
          validator = FormValidator(self.MockFormView())
          self.validation_failed_due_to_multiple_errors_returns_appropriate_message(validator)
  
    # Same tests on ModelResource
  
      def test_modelform_validation_returns_content_unchanged_if_already_valid_and_clean(self):
          validator = ModelFormValidator(self.MockModelFormView())
          self.validation_returns_content_unchanged_if_already_valid_and_clean(validator)
  
keep keep keep keep replace keep keep keep keep keep
 validators tests -> resources tests 
djangorestframework/tests/validators.py