@Test
public void testPercentileSetIsNull() {

  Date fromDate = new Date();
  Date toDate = new Date(fromDate.getTime()+60000000l);
  AuditDbQuery query = new AuditDbQuery(formatter.format(toDate),
      formatter.format(fromDate), "", "TIER,TOPIC,HOSTNAME", null);
  try {
    query.parseAndSetArguments();
  } catch (Exception e) {
    e.printStackTrace();
  }
  Assert.assertTrue(query.percentileSet == null);
}