code: @Deployment(resources={"org/activiti/engine/test/api/mgmt/timerOnTask.bpmn20.xml"}) public void testDeleteJobDeletion(){
    ProcessInstance processInstance=runtimeService.startProcessInstanceByKey("timerOnTask");
    Job timerJob=managementService.createTimerJobQuery().processInstanceId(processInstance.getId()).singleResult();
    assertNotNull("Task timer should be there",timerJob);
    managementService.deleteTimerJob(timerJob.getId());
    timerJob=managementService.createTimerJobQuery().processInstanceId(processInstance.getId()).singleResult();
    assertNull("There should be no job now. It was deleted",timerJob);
  }
  