def METHOD_NAME(self):
    p = np.array([[0, 1, 0, 1], [0, 0, 1, 1], [0, 1, 0, 1]])
    center = np.array([[0.5], [0.5], [0]])
    sp = sort_points.sort_point_plane(p, center)
    known_ordering = np.array([0, 1, 3, 2])
    self.assertTrue(test_utils.compare_arrays(sp, known_ordering))