}

  public void testMinMaxNatural() {
    assertThat(Comparators.min(1, 2)).isEqualTo(1);
    assertThat(Comparators.min(2, 1)).isEqualTo(1);
    assertThat(Comparators.max(1, 2)).isEqualTo(2);
    assertThat(Comparators.max(2, 1)).isEqualTo(2);
  }

  public void testMinMaxNatural_equalInstances() {
    Foo a = new Foo(1);
    Foo b = new Foo(1);

    assertThat(findLast(IntStream.of())).isEqualTo(OptionalInt.empty());
    assertThat(findLast(IntStream.of(1, 2, 3, 4, 5))).isEqualTo(OptionalInt.of(5));

    // test with a large, not-subsized Spliterator
    List<Integer> list =
        IntStream.rangeClosed(0, 10000).boxed().collect(Collectors.toCollection(LinkedList::new));
    assertThat(findLast(list.stream().mapToInt(i -> i))).isEqualTo(OptionalInt.of(10000));

    comparator = Comparators.emptiesLast(naturalOrder());
  }

  public void testMinMaxNatural() {
    assertThat(Comparators.min(1, 2)).isEqualTo(1);
    assertThat(Comparators.min(2, 1)).isEqualTo(1);
    assertThat(Comparators.max(1, 2)).isEqualTo(2);
    assertThat(Comparators.max(2, 1)).isEqualTo(2);
  }

  public void testMinMaxNatural_equalInstances() {
    Foo a = new Foo(1);
    Foo b = new Foo(1);

    try {
      Iterators.getOnlyElement(iterator);
      fail();
    } catch (IllegalArgumentException expected) {
      assertThat(expected).hasMessageThat().isEqualTo("expected one element but was: <one, two>");
    }
  }

  public void testGetOnlyElement_noDefault_fiveElements() {
    Iterator<String> iterator = asList("one", "two", "three", "four", "five").iterator();

    assertThat(actual.lastIndexOf(list(1, 2))).isEqualTo(2);
    assertThat(actual.lastIndexOf(list(1, 3))).isEqualTo(3);
    assertThat(actual.lastIndexOf(list(1, 1))).isEqualTo(-1);

    assertThat(actual.lastIndexOf(list(1))).isEqualTo(-1);
    assertThat(actual.lastIndexOf(list(1, 1, 1))).isEqualTo(-1);
  }

  public void testCartesianProduct_unrelatedTypes() {

      fail("Expected NoSuchElementException");
    } catch (NoSuchElementException expected) {
    }
  }

  public void testOnlyElementSingleton() {
    assertThat(Stream.of(1).collect(MoreCollectors.onlyElement())).isEqualTo(1);
  }

  public void testOnlyElementNull() {
    assertThat(Stream.<@Nullable Object>of((Object) null).collect(MoreCollectors.onlyElement()))
        .isNull();
  }

  public void testOnlyElementMultiple() {

        .isEqualTo(new File("/c:\\Documents ~ Settings, or not\\11-12 12:05"));
    assertThat(ClassPath.toFile(new URL("file:///C:\\Program Files\\Apache Software Foundation")))
        .isEqualTo(new File("/C:\\Program Files\\Apache Software Foundation/"));
    assertThat(ClassPath.toFile(new URL("file:///C:\\\u20320 \u22909"))) // Chinese Ni Hao
        .isEqualTo(new File("/C:\\\u20320 \u22909"));
  }

     */
    TopKSelector<Integer> top = TopKSelector.least(7);
    top.offerAll(Ints.asList(5, 7, 6, 2, 4, 3, 1, 0, 0, 0, 0, 0, 0, 0));
    assertThat(top.topK()).isEqualTo(Ints.asList(0, 0, 0, 0, 0, 0, 0));
  }

    assertThat(actual.lastIndexOf(list(1, 2))).isEqualTo(2);
    assertThat(actual.lastIndexOf(list(1, 3))).isEqualTo(3);
    assertThat(actual.lastIndexOf(list(1, 1))).isEqualTo(-1);

    assertThat(actual.lastIndexOf(list(1))).isEqualTo(-1);
    assertThat(actual.lastIndexOf(list(1, 1, 1))).isEqualTo(-1);
  }

  public void testCartesianProduct_unrelatedTypes() {

     */
    TopKSelector<Integer> top = TopKSelector.least(7);
    top.offerAll(Ints.asList(5, 7, 6, 2, 4, 3, 1, 0, 0, 0, 0, 0, 0, 0));
    assertThat(top.topK()).isEqualTo(Ints.asList(0, 0, 0, 0, 0, 0, 0));
  }