code: public void testQueryByDuedateHigherThan(){
    JobQuery query=managementService.createJobQuery().duedateHigherThan(testStartTime);
    verifyQueryResults(query,0);
    query=managementService.createJobQuery();
    verifyQueryResults(query,1);
    TimerJobQuery timerQuery=managementService.createTimerJobQuery().duedateHigherThan(testStartTime);
    verifyQueryResults(timerQuery,3);
    query=managementService.createJobQuery().duedateHigherThan(timerOneFireTime);
    verifyQueryResults(query,0);
    timerQuery=managementService.createTimerJobQuery().duedateHigherThan(timerOneFireTime);
    verifyQueryResults(timerQuery,2);
    timerQuery=managementService.createTimerJobQuery().duedateHigherThan(timerTwoFireTime);
    verifyQueryResults(timerQuery,1);
    timerQuery=managementService.createTimerJobQuery().duedateHigherThan(timerThreeFireTime);
    verifyQueryResults(timerQuery,0);
  }
  