assertSame("", Strings.padEnd("", 0, '-'));
    assertSame("x", Strings.padEnd("x", 0, '-'));
    assertSame("x", Strings.padEnd("x", 1, '-'));
    assertSame("xx", Strings.padEnd("xx", 0, '-'));
    assertSame("xx", Strings.padEnd("xx", 2, '-'));
  }

  public void testPadEnd_somePadding() {
    assertEquals("-", Strings.padEnd("", 1, '-'));
    assertEquals("--", Strings.padEnd("", 2, '-'));

   * with as many copies of {@code padChar} as are necessary to reach that length. For example,
   *
   * <ul>
   *   <li>{@code padEnd("4.", 5, '0')} returns {@code "4.000"}
   *   <li>{@code padEnd("2010", 3, '!')} returns {@code "2010"}
   * </ul>
   *
   * <p>See {@link java.util.Formatter} for a richer set of formatting capabilities.
   *