@Test
  public void testOnStartCommand_handlesNullAction() {
    JobService service = spy(new ExampleJobService());
    int startId = 7;

    Intent nullActionIntent = new Intent();
    service.onStartCommand(nullActionIntent, 0, startId);

    verify(service).stopSelf(startId);
  }
Tests for the {@link JobService} class.
jobdispatcher/src/test/java/com/firebase/jobdispatcher/JobServiceTest.java