def test_interval_durration():
interval = Interval()
interval.begin()
sleep(1.1)
interval.expire()
assert interval.durration_calc() == 1
def test_interval_expire_before_begin():
interval = Interval()
with pytest.raises(ValueError):
interval.expire()
def test_interval_begin_a_completed_process():
interval = Interval()
interval.begin()
interval.expire()
with pytest.raises(ValueError):
interval.begin()
def test_interval_status_complete():
interval = Interval()
interval.begin()
interval.expire()
assert interval.status == interval_states["COMPLETE"]