list(0, 1, 1),
            list(1, 0, 0),
            list(1, 0, 1),
            list(1, 1, 0),
            list(1, 1, 1))
        .inOrder();
  }

  public void testCartesianProduct_contains() {
    List<List<Integer>> actual = cartesianProduct(list(1, 2), list(3, 4));
    assertTrue(actual.contains(list(1, 3)));
    assertTrue(actual.contains(list(1, 4)));
    assertTrue(actual.contains(list(2, 3)));