}

  public void testPadStart_negativeMinLength() {
    assertSame("x", Strings.padStart("x", -1, '-'));
  }

  // TODO: could remove if we got NPT working in GWT somehow
  public void testPadStart_null() {
    try {
      Strings.padStart(null, 5, '0');
      fail();
    } catch (NullPointerException expected) {
    }
  }

  public void testPadEnd_noPadding() {