'Verify that list_cached() method handles a case when no images are
cached without errors.'

@mock.patch.object(glance.image_cache.client.CacheClient, 'get_cached_images')
def test_list_cached_images_empty(self, mock_images):

    mock_images.return_value = []
    self.assertEqual(cache_manage.SUCCESS, cache_manage.list_cached(mock.Mock(), ''))
