def test_InfiniteProcess__pause_and_resume_work_while_running():
test_queue = SimpleMultiprocessingQueue()
error_queue = multiprocessing.Queue()
p = InfiniteProcessThatPopulatesQueue(test_queue, error_queue)
p.start()
seconds_to_sleep_while_queue_populating = 2 # Eli (12/14/20): in GitHub Windows containers, 0.05 seconds was too short, so just bumping up to 1 second # Tanner (1/31/21): bumping to 2 seconds after another CI issue
time.sleep(
seconds_to_sleep_while_queue_populating) # let the queue populate
p.pause()
items_in_queue_at_pause = []
while test_queue.empty() is False:
items_in_queue_at_pause.append(test_queue.get())
time.sleep(
SECONDS_TO_SLEEP_BETWEEN_CHECKING_QUEUE_SIZE
) # don't relentlessly poll the queue # Eli (2/10/21): There was an odd hanging that occurred once during CI in a windows container...possibly due to relentlessly checking empty/get of the queue(?) https://github.com/CuriBio/stdlib-utils/pull/87/checks?check_run_id=1856410303
assert len(items_in_queue_at_pause) > 0
last_item_in_queue_at_pause = items_in_queue_at_pause[-1]
time.sleep(seconds_to_sleep_while_queue_populating
) # give the queue time to populate if pause was unsuccessful
assert test_queue.empty() is True
p.resume()
time.sleep(seconds_to_sleep_while_queue_populating
) # give the queue time to populate
hard_stop_results = p.hard_stop()
p.join()
assert len(hard_stop_results["fatal_error_reporter"]) == 0
items_in_queue_at_stop = []
while test_queue.empty() is False:
items_in_queue_at_stop.append(test_queue.get())
time.sleep(
SECONDS_TO_SLEEP_BETWEEN_CHECKING_QUEUE_SIZE
) # don't relentlessly poll the queue # Eli (2/10/21): There was an odd hanging that occurred once during CI in a windows container...possibly due to relentlessly checking empty/get of the queue(?) https://github.com/CuriBio/stdlib-utils/pull/87/checks?check_run_id=1856410303
assert len(items_in_queue_at_stop) > 0
assert items_in_queue_at_stop[0] - 1 == last_item_in_queue_at_pause
def test_InfiniteProcess__queue_is_populated_with_error_occuring_during_run__and_stop_is_called(
mocker, ):
expected_error = ValueError("test message")
error_queue = SimpleMultiprocessingQueue()
p = InfiniteProcessThatRaisesError(error_queue)
mocker.patch("builtins.print",
autospec=True) # don't print the error message to stdout
spied_stop = mocker.spy(p, "stop")
p.run()
assert error_queue.empty() is False
assert spied_stop.call_count == 1
actual_error, _ = error_queue.get()
assert isinstance(actual_error, type(expected_error))
assert str(actual_error) == str(expected_error)
def test_InfiniteProcess__queue_is_populated_with_error_occuring_during_live_spawned_run(
mocker, ):
# spied_print_exception = mocker.spy(
# parallelism_framework, "print_exception"
# ) # Eli (3/13/20) can't figure out why this isn't working (call count never gets to 1), so just asserting about print instead
mocker.patch("builtins.print",
autospec=True) # don't print the error message to stdout
expected_error = ValueError("test message")
error_queue = SimpleMultiprocessingQueue()
p = InfiniteProcessThatRaisesError(error_queue)
p.start()
p.join()
assert error_queue.empty() is False
actual_error, actual_stack_trace = error_queue.get()
# assert spied_print_exception.call_count == 1
# assert mocked_print.call_count==1
assert isinstance(actual_error, type(expected_error))
assert str(actual_error) == str(expected_error)
assert p.exitcode == 0 # When errors are handled, the error code is 0
# assert actual_error == expected_error # Eli (12/24/19): for some reason this asserting doesn't pass...not sure why....so testing class type and str instead
assert 'raise ValueError("test message")' in actual_stack_trace