def test_unstick(self):
# Simulate a broken batch job with a database footprint
create_stuck_batch_job()
self.assertTrue(BatchJob.get())
self.assertTrue(Student.get_all_id_numbers())
# Queue and fire the unstick task
driver.queue_unstick()
tasks = self.taskqueue_stub.get_filtered_tasks()
self.assertEqual(len(tasks), 1)
result = deferred.run(tasks[0].payload)
# Ensure relevant DB tables have been cleared
self.assertFalse(BatchJob.get())
self.assertFalse(Student.get_all_id_numbers())
