def METHOD_NAME(self):
    Serializer.save(self.image1, 'test_serializer_save_no_ext',
                    info={'info':'example'}, key={1:2})
    if 'test_serializer_save_no_ext.pkl' not in os.listdir('.'):
        raise AssertionError('File test_serializer_save_no_ext.pkl not found')