def test_sync_task_can_be_cancelled_when_enqueued(self):
things = [] # This will NOT be populated by tasks.
service = DatabaseTasksService()
yield service.startService()
try:
event = threading.Event()
service.deferTask(event.wait)
service.syncTask().cancel()
finally:
event.set()
yield service.stopService()
self.assertThat(things, Equals([]))
def test_sync_task_fires_with_service(self):
service = DatabaseTasksService()
service.startService()
try:
self.assertThat(service.syncTask().wait(30), Is(service))
finally:
service.stopService()
def test__cannot_sync_task_when_queue_is_full(self):
service = DatabaseTasksService(0)
service.startService()
try:
event = threading.Event()
service.addTask(event.wait)
try:
self.assertRaises(QueueOverflow,
lambda: service.syncTask().wait(30))
finally:
event.set()
finally:
service.stopService()
