def METHOD_NAME():
    """Test corner-face connectivity."""
    graph = DualUniformRectilinearGraph((3, 4))
    assert_array_equal(
        graph.corners_at_face, [[0, 1], [1, 2], [0, 3], [1, 4], [2, 5], [3, 4], [4, 5]]
    )
    assert_array_equal(graph.corner_at_face_tail, [0, 1, 0, 1, 2, 3, 4])
    assert_array_equal(graph.corner_at_face_head, [1, 2, 3, 4, 5, 4, 5])