}

  public void testEncloseAll_empty() {
    assertThrows(NoSuchElementException.class, () -> Range.encloseAll(ImmutableSet.<Integer>of()));
  }

  public void testEncloseAll_nullValue() {
    List<@Nullable Integer> nullFirst = Lists.newArrayList(null, 0);
    assertThrows(NullPointerException.class, () -> Range.encloseAll((List<Integer>) nullFirst));