assertListImmutable(result);
    assertEquals(ImmutableList.of(-1, 3, 4, 5), result);
  }

  public void testLeastOfIterable_simple_n_withNullElement() {
    List<@Nullable Integer> list = asList(3, 4, 5, null, -1);
    List<@Nullable Integer> result =
        Ordering.<Integer>natural().nullsLast().leastOf(list, list.size());
    assertTrue(result instanceof RandomAccess);
    assertListImmutable(result);

    assertListImmutable(result);
    assertEquals(ImmutableList.of(-1, 3, 4, 5), result);
  }

  public void testLeastOfIterable_simple_n_withNullElement() {
    List<@Nullable Integer> list = asList(3, 4, 5, null, -1);
    List<@Nullable Integer> result =
        Ordering.<Integer>natural().nullsLast().leastOf(list, list.size());
    assertTrue(result instanceof RandomAccess);
    assertListImmutable(result);

    list.set(1, 4);

    List<Integer> first = iterator.next();

    // Changes after are too (unlike Iterables.partition)
    list.set(2, 5);

    assertEquals(asList(3, 4, 5), first);

    // Changes to a sublist also write through to the original list
    first.set(1, 6);
    assertEquals(asList(3, 6, 5), list);
  }

  public void testPartitionSize_1() {

    list.set(1, 4);

    List<Integer> first = iterator.next();

    // Changes after are too (unlike Iterables.partition)
    list.set(2, 5);

    assertEquals(asList(3, 4, 5), first);

    // Changes to a sublist also write through to the original list
    first.set(1, 6);
    assertEquals(asList(3, 6, 5), list);
  }

  public void testPartitionSize_1() {