def test_iter_wait_progress_adv_timeout():
with pytest.raises(TimeoutException) as exc:
for state in iter_wait_progress(lambda: 100,
advance_timeout=.1,
sleep=.05,
total_timeout=1):
pass
assert exc.value.message.startswith("did not advance")
assert float(exc.value.duration) == pytest.approx(0.1, 0.05)
def test_iter_wait_progress_total_timeout():
data = Bunch(a=1000)
def get():
data.a -= 1
return data.a
with pytest.raises(TimeoutException) as exc:
for state in iter_wait_progress(get,
advance_timeout=1,
sleep=.05,
total_timeout=.1):
pass
assert exc.value.message.startswith("advanced but failed to finish")
def test_iter_wait_progress_inbetween_sleep():
data = Bunch(a=3)
def get():
data.a -= 1
return data.a
sleep = .1
g = iter_wait_progress(get, advance_timeout=10, sleep=sleep)
# first iteration should be immediate
t = Timer()
next(g)
assert t.duration < sleep
# subsequent iteration should be at least 'sleep' long
next(g)
assert t.duration >= sleep
for state in g:
pass
assert state.finished is True