def METHOD_NAME(self):
    res = unique_coords_nd(8, 3)
    self.assertTrue(
        np.allclose(
            res["r_unique"],
            [
                0.0,
                0.25,
                0.35355,
                0.43301,
                0.5,
                0.55902,
                0.61237,
                0.70711,
                0.75,
                0.79057,
                0.82916,
                0.86603,
                0.90139,
                0.93541,
                1.0,
            ],
        )
    )
    self.assertEqual(res["ang_unique"].shape, (2, 218))