def METHOD_NAME(self):
    asset = presences.ActivityAssets(
        application_id=None, large_image=None, large_text=None, small_image=None, small_text=None
    )
    with mock.patch.object(
        presences.ActivityAssets, "make_small_image_url", side_effect=RuntimeError
    ) as make_small_image_url:
        result = asset.small_image_url
    assert result is None
    make_small_image_url.assert_called_once_with()