@Test public void testRandom() throws IOException {
  StringSerializer serializer=StringSerializer.INSTANCE;
  for (int i=0; i < 100; i++) {
    String str=RandomStringUtils.random(i);
    byte[] serialized=serializer.serialize(str);
    String deserialized=(String)serializer.deserialize(serialized);
    assertEquals(str,deserialized);
  }
}