.containsExactly(exp1, exp2, exp3, exp4)
        .inOrder();
  }

  public void testCartesianProductTooBig() {
    Set<Integer> set = ContiguousSet.create(Range.closed(0, 10000), DiscreteDomain.integers());
    assertThrows(IllegalArgumentException.class, () -> cartesianProduct(set, set, set, set, set));
  }

  public void testCartesianProduct_hashCode() {