}

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

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

  public void testRepeat() {
    String input = "20";