assertEquals(
        Integer.MAX_VALUE,
        Collections2.orderedPermutations(concat(nCopies(21, 1), nCopies(14, 2))).size());
  }

  public void testOrderedPermutationSetContains() {
    List<Integer> list = newArrayList(3, 2, 1);
    Collection<List<Integer>> permutationSet = Collections2.orderedPermutations(list);

    assertTrue(permutationSet.contains(newArrayList(1, 2, 3)));