'If there are no settings for subclass and no subclass attributes, pipeline should use
attributes of base class.'

def test_no_custom_settings_for_subclasses(self):

    class UserDefinedImagePipeline(ImagesPipeline, ):
        pass
    user_pipeline = UserDefinedImagePipeline.from_settings(Settings({'IMAGES_STORE': self.tempdir}))
    for (pipe_attr, settings_attr) in self.img_cls_attribute_names:
        custom_value = self.default_pipeline_settings.get(pipe_attr.upper())
        self.assertEqual(getattr(user_pipeline, pipe_attr.lower()), custom_value)
