self._test_valid(
        weights=np.asarray((
            5, 7, 11, 3, 2, 12, 7, 5, 2, 17, 11, 3,
            2, 17, 11, 3, 5, 7, 11, 3, 2, 12, 7, 5)).reshape((3, 2, 4)),