def test_no_sleep(self, sleep_mock, random_mock):
# Any call that executes properly the first time shouldn't sleep
random_mock.return_value = 1
func = mock.Mock()
# func.side_effect
func.side_effect = loopingcall.LoopingCallDone(retvalue='return value')
retvalue = backoff.BackOffLoopingCall(func).start().wait()
self.assertFalse(sleep_mock.called)
self.assertTrue(retvalue, 'return value')
def lookup_node(self, hardware_info, timeout, starting_interval):
timer = backoff.BackOffLoopingCall(self._do_lookup,
hardware_info=hardware_info)
try:
node_content = timer.start(starting_interval=starting_interval,
timeout=timeout).wait()
except backoff.LoopingCallTimeOut:
raise errors.LookupNodeError('Could not look up node info. Check '
'logs for details.')
return node_content
def test_no_backoff(self, sleep_mock, random_mock):
random_mock.return_value = 1
func = mock.Mock()
# func.side_effect
func.side_effect = [True, True, True, loopingcall.LoopingCallDone(
retvalue='return value')]
retvalue = backoff.BackOffLoopingCall(func).start().wait()
expected_times = [mock.call(1), mock.call(1), mock.call(1)]
self.assertEqual(expected_times, sleep_mock.call_args_list)
self.assertTrue(retvalue, 'return value')
def test_exponential_backoff(self, sleep_mock, random_mock):
def false():
return False
random_mock.return_value = .8
self.assertRaises(backoff.LoopingCallTimeOut,
backoff.BackOffLoopingCall(false).start()
.wait)
expected_times = [mock.call(1.6000000000000001),
mock.call(2.5600000000000005),
mock.call(4.096000000000001),
mock.call(6.5536000000000021),
mock.call(10.485760000000004),
mock.call(16.777216000000006),
mock.call(26.843545600000013),
mock.call(42.949672960000022),
mock.call(68.719476736000033),
mock.call(109.95116277760006)]
self.assertEqual(expected_times, sleep_mock.call_args_list)
def test_max_interval(self, sleep_mock, random_mock):
def false():
return False
random_mock.return_value = .8
self.assertRaises(backoff.LoopingCallTimeOut,
backoff.BackOffLoopingCall(false).start(
max_interval=60)
.wait)
expected_times = [mock.call(1.6000000000000001),
mock.call(2.5600000000000005),
mock.call(4.096000000000001),
mock.call(6.5536000000000021),
mock.call(10.485760000000004),
mock.call(16.777216000000006),
mock.call(26.843545600000013),
mock.call(42.949672960000022),
mock.call(60),
mock.call(60),
mock.call(60)]
self.assertEqual(expected_times, sleep_mock.call_args_list)