def test_sleeps_for_second_value(self, sleep_mock):
gen = each_interval(5, sleep=sleep_mock)
next(gen)
next(gen)
sleep_mock.assert_called_once()
def tests_sleeps_until_next_interval(self, sleep_mock):
current_time = FakeTime(1)
gen = each_interval(1, current_time=current_time, sleep=sleep_mock)
next(gen)
next(gen)
sleep_mock.assert_called_once_with(1)
def tests_zero_sleep_if_late(self, sleep_mock):
current_time = FakeTime(1)
gen = each_interval(1, current_time=current_time, sleep=sleep_mock)
next(gen)
current_time.set(3)
next(gen)
sleep_mock.assert_called_once_with(0)
def tests_sleeps_after_delay(self, sleep_mock):
current_time = FakeTime(1)
gen = each_interval(1, current_time=current_time, sleep=sleep_mock)
next(gen)
current_time.set(1.5)
next(gen)
sleep_mock.assert_called_once_with(0.5)
def test_does_not_race_to_catch_up(self, sleep_mock):
current_time = FakeTime(1)
gen = each_interval(1, current_time=current_time, sleep=sleep_mock)
next(gen)
current_time.set(3)
next(gen)
next(gen)
sleep_mock.assert_has_calls([mock.call(0), mock.call(1)])
def test_does_not_sleep_for_first_value(self, sleep_mock):
gen = each_interval(1, sleep=sleep_mock)
next(gen)
sleep_mock.assert_not_called()
def test_yields_none_values(self, sleep_mock):
gen = each_interval(1, sleep=sleep_mock)
assert [next(gen), next(gen), next(gen)] == [None, None, None]