@Test
public void testTrimQueueNamesEmpty() throws Exception {

  assertNull(trimQueueName(null));
  final String spaces = "\u2002\u3000\r\u0085\u200A\u2005\u2000\u3000"
      + "\u2029\u000B\u3000\u2008\u2003\u205F\u3000\u1680"
      + "\u0009\u0020\u2006\u2001\u202F\u00A0\u000C\u2009"
      + "\u3000\u2004\u3000\u3000\u2028\n\u2007\u3000";
  assertTrue(trimQueueName(spaces).isEmpty());
}