Iterator<Integer> iterator = singleton(0).iterator();
    assertEquals(1, Iterators.size(iterator));
  }

  public void testSize_partiallyConsumed() {
    Iterator<Integer> iterator = asList(1, 2, 3, 4, 5).iterator();
    iterator.next();
    iterator.next();
    assertEquals(3, Iterators.size(iterator));
  }

  public void test_contains_nonnull_yes() {

        .scheme("http")
        .build()
        .port,
    ).isEqualTo(80)
    assertThat(
      parse("https://example.com:1234")
        .newBuilder()
        .scheme("http")
        .build()
        .port,
    ).isEqualTo(1234)
  }

  @Test
  fun composeEncodesWhitespace() {
    val url =
      HttpUrl
        .Builder()
        .scheme("http")