def test_popleft(self):
q = Queue(hub=self.hub)
self.assertEqual(len(q), 0)
q.append('an item')
q.append('another item')
self.assertEqual(len(q), 2)
self.assertEqual(q.popleft(), 'an item')
self.assertEqual(len(q), 1)
self.assertEqual(q.popleft(), 'another item')
self.assertEqual(len(q), 0)
start = time.time()
self.assertRaises(greennet.Timeout,
q.popleft,
IMMEDIATE_THRESHOLD)
self.assert_(time.time() - start < IMMEDIATE_THRESHOLD * 2)
self.assertEqual(len(q), 0)
def test_popleft_wait_for_append(self):
q = Queue(hub=self.hub)
timeout = 0.5
self.hub.call_later(greennet.greenlet(q.append), timeout, 'an item')
start = time.time()
self.assertEqual(q.popleft(), 'an item')
duration = time.time() - start
self.assert_(duration < timeout + IMMEDIATE_THRESHOLD
and duration > timeout - IMMEDIATE_THRESHOLD)
