def test__time_forward(sleep):
with patch("zettarepl.scheduler.clock.datetime") as datetime_:
clock = Clock()
clock.now = datetime(2018, 8, 31, 13, 20, 50)
datetime_.utcnow.return_value = datetime(2018, 8, 31, 13, 21, 1, 2)
assert clock._tick() == datetime(2018, 8, 31, 13, 21, 1, 2)
sleep.assert_not_called()
assert clock.now == datetime(2018, 8, 31, 13, 21, 1, 2)
def test__sleep_max_10s(sleep):
with patch("zettarepl.scheduler.clock.datetime") as datetime_:
clock = Clock()
clock.now = datetime(2018, 8, 31, 13, 20, 25)
datetime_.utcnow.return_value = datetime(2018, 8, 31, 13, 20, 35)
assert clock._tick() is None
sleep.assert_called_once_with(10)
assert clock.now == datetime(2018, 8, 31, 13, 20, 35)
def test__sleep_at_the_end_of_the_minute(sleep):
with patch("zettarepl.scheduler.clock.datetime") as datetime_:
clock = Clock()
clock.now = datetime(2018, 8, 31, 13, 20, 45)
datetime_.utcnow.return_value = datetime(2018, 8, 31, 13, 20, 55,
500000)
assert clock._tick() is None
sleep.assert_called_once_with(4.5)
assert clock.now == datetime(2018, 8, 31, 13, 20, 55, 500000)
