import multiprocessing import os import signal import sys import threading import uuid as uuidlib from datetime import datetime from math import copysign from multiprocessing import Event, Value from time import sleep from typing import Optional import pytest from django.utils import timezone from django_q.brokers import Broker, get_broker from django_q.cluster import Cluster, Sentinel, get_mp_context from django_q.conf import Conf from django_q.humanhash import DEFAULT_WORDLIST, uuid from django_q.models import Success, Task from django_q.monitor import monitor, save_task from django_q.pusher import pusher from django_q.queues import Queue from django_q.signals import ( post_execute, post_execute_in_worker, pre_enqueue, pre_execute, ) from django_q.status import Stat from django_q.tasks import ( async_task, count_group, delete_group, fetch, fetch_group, queue_size, result, result_group, ) from django_q.tests.tasks import TaskError, multiply from django_q.utils import add_months, add_years from django_q.worker import worker myPath = os.path.dirname(os.path.abspath(__file__)) sys.path.insert(0, myPath + "/../") class WordClass: def __init__(self): self.word_list = DEFAULT_WORDLIST def get_words(self): return self.word_list @pytest.fixture def broker(monkeypatch): monkeypatch.setattr(Conf, "DJANGO_REDIS", "default") return get_broker() def test_get_mp_context_prefers_fork_when_available(monkeypatch): monkeypatch.setattr( multiprocessing, "get_all_start_methods", lambda: ["fork", "spawn", "forkserver"], ) calls = [] class DummyContext: def get_start_method(self): return "fork" def fake_get_context(method=None): calls.append(method) return DummyContext() monkeypatch.setattr(multiprocessing, "get_context", fake_get_context) assert get_mp_context().get_start_method() == "fork" assert calls == ["fork"] def test_get_mp_context_falls_back_to_platform_default_without_fork(monkeypatch): """ Regression test: get_mp_context() used to hardcode the unix-only "fork" context, which raises ValueError on platforms (e.g. Windows) that don't support it. It should instead defer to the platform's default context whenever "fork" isn't available. """ monkeypatch.setattr(multiprocessing, "get_all_start_methods", lambda: ["spawn"]) calls = [] real_get_context = multiprocessing.get_context def fake_get_context(method=None): calls.append(method) return real_get_context(method) monkeypatch.setattr(multiprocessing, "get_context", fake_get_context) get_mp_context() # Must ask for the platform default (no explicit method), should never be equal to "fork" assert calls == [None] def test_redis_connection(broker): assert broker.ping() is True @pytest.mark.django_db def test_sync(broker): task = async_task( "django_q.tests.tasks.count_letters", DEFAULT_WORDLIST, broker=broker, sync=True ) assert result(task) == 1506 @pytest.mark.django_db def test_sync_raise_exception(broker): with pytest.raises(TaskError): async_task("django_q.tests.tasks.raise_exception", broker=broker, sync=True) @pytest.mark.django_db def test_cluster_initial(broker): broker.list_key = "initial_test:q" broker.delete_queue() c = Cluster(broker=broker) assert c.sentinel is None assert c.stat.status == Conf.STOPPED assert c.start() > 0 assert c.sentinel.is_alive() is True assert c.is_running assert c.is_stopping is False assert c.is_starting is False sleep(0.5) stat = c.stat assert stat.status == Conf.IDLE assert c.stop() is True assert c.sentinel.is_alive() is False assert c.has_stopped assert c.stop() is False broker.delete_queue() class TestEarlyClusterStop: sentinel_event = Event() test_event = Event() @staticmethod def _fake_ping_for_test_cluster_early_stop(): """ Fake broker ping() method for test_cluster_early_stop() This is called in the sentinel process's start() method and overriding it allows us to synchronize the sentinel process with the main process to provide a deterministic ordering of operations for the test. This is implemented as a static method so the patched broker remains pickleable for passing to the sentinel process, in case anyone ever runs the test on platforms like MacOS that use spawn Process start method. """ # let the main process know the sentinel is waiting TestEarlyClusterStop.sentinel_event.set() # wait for the main process to let the sentinel proceed. The timeout prevents # the test from hanging if the main process terminates unexpectedly before # setting the event. assert TestEarlyClusterStop.test_event.wait(10) @pytest.mark.django_db def test_cluster_early_stop(self, broker, monkeypatch): """ Test stopping the cluster before the sentinel has set the cluster's start_event """ def raise_sigterm(): # wait for the sentinel to be blocked in fake_ping(). Periodically check # that the sentinel is alive in case the sentinel dies unexpectedly before # setting the sentinel_event -- prevents the test from hanging if sentinel # dies unexpectedly. while True: if self.sentinel_event.wait(0.5): break if not c.sentinel.is_alive(): break # stop the cluster via SIGTERM os.kill(os.getpid(), signal.SIGTERM) # unblock the sentinel self.test_event.set() monkeypatch.setattr( broker, "ping", self._fake_ping_for_test_cluster_early_stop, ) broker.list_key = "initial_test:q" broker.delete_queue() c = Cluster(broker=broker) assert c.sentinel is None assert c.stat.status == Conf.STOPPED # Use a timer to stop the cluster while it is still starting up. The timer function # is guaranteed to run before c.start() returns, as start() must wait for the # sentinel to set the cluster's start_event, and the sentinel will block on # test_event before setting start_event. threading.Timer(0.5, raise_sigterm).start() c.start() stat = c.stat assert stat.status == Conf.STOPPED assert c.sentinel.is_alive() is False assert c.has_stopped broker.delete_queue() @pytest.mark.django_db def test_cluster_stop_responsive(broker, monkeypatch): """ Ensure that stopping the cluster is responsive and does not wait for a full GUARD_CYCLE. """ timeout_seconds = 5 def timeout(signal, frame): assert 0, f"cluster did not stop after {timeout_seconds}s" broker.list_key = "initial_test:q" broker.delete_queue() # set a long GUARD_CYCLE -- greater than timeout_seconds monkeypatch.setattr(Conf, "GUARD_CYCLE", timeout_seconds * 2) c = Cluster(broker=broker) assert c.sentinel is None assert c.stat.status == Conf.STOPPED assert c.start() > 0 assert c.sentinel.is_alive() is True assert c.is_running assert c.is_stopping is False assert c.is_starting is False sleep(0.5) stat = c.stat assert stat.status == Conf.IDLE prev_handler = signal.signal(signal.SIGALRM, timeout) try: signal.alarm(timeout_seconds) assert c.stop() is True finally: signal.alarm(0) # cancel the alarm signal.signal(signal.SIGALRM, prev_handler) assert c.sentinel.is_alive() is False assert c.has_stopped assert c.stop() is False broker.delete_queue() @pytest.mark.django_db def test_sentinel(): start_event = Event() stop_event = Event() stop_event.set() cluster_id = uuidlib.uuid4() s = Sentinel( stop_event, start_event, cluster_id=cluster_id, broker=get_broker("sentinel_test:q"), ) assert start_event.is_set() assert s.status() == Conf.STOPPED @pytest.mark.django_db def test_cluster(broker): broker.list_key = "cluster_test:q" broker.delete_queue() task = async_task( "django_q.tests.tasks.count_letters", DEFAULT_WORDLIST, broker=broker ) assert broker.queue_size() == 1 task_queue = Queue() assert task_queue.qsize() == 0 result_queue = Queue() assert result_queue.qsize() == 0 event = Event() event.set() # Test push pusher(task_queue, event, broker=broker) assert task_queue.qsize() == 1 assert queue_size(broker=broker) == 0 # Test work task_queue.put("STOP") worker(task_queue, result_queue, Value("f", -1)) assert task_queue.qsize() == 0 assert result_queue.qsize() == 1 # Test monitor result_queue.put("STOP") monitor(result_queue) assert result_queue.qsize() == 0 # check result assert result(task) == 1506 broker.delete_queue() @pytest.mark.django_db def test_results(broker): broker.list_key = "cluster_test:q" broker.delete_queue() a = async_task( "django_q.tests.tasks.return_falsy_value", broker=broker, ) task_queue = Queue() stop_event = Event() stop_event.set() pusher(task_queue, stop_event, broker=broker) task_queue.put("STOP") result_queue = Queue() worker(task_queue, result_queue, Value("f", -1)) result_queue.put("STOP") monitor(result_queue) # should not loop indefinitely when a real value is returned value = result(a, wait=-1) assert value == [] @pytest.mark.django_db def test_enqueue(broker, admin_user): broker.list_key = "cluster_test:q" broker.delete_queue() a = async_task( "django_q.tests.tasks.count_letters", DEFAULT_WORDLIST, hook="django_q.tests.test_cluster.assert_result", broker=broker, ) b = async_task( "django_q.tests.tasks.count_letters2", WordClass(), hook="django_q.tests.test_cluster.assert_result", broker=broker, ) # unknown argument c = async_task( "django_q.tests.tasks.count_letters", DEFAULT_WORDLIST, "oneargumentoomany", hook="django_q.tests.test_cluster.assert_bad_result", broker=broker, ) # unknown function d = async_task( "django_q.tests.tasks.does_not_exist", WordClass(), hook="django_q.tests.test_cluster.assert_bad_result", broker=broker, ) # function without result e = async_task("django_q.tests.tasks.countdown", 100000, broker=broker) # function as instance f = async_task(multiply, 753, 2, hook=assert_result, broker=broker) # model as argument g = async_task( "django_q.tests.tasks.get_task_name", Task(name="John"), broker=broker ) # args,kwargs, group and broken hook h = async_task( "django_q.tests.tasks.word_multiply", 2, word="django", hook="fail.me", broker=broker, ) # args unpickle test j = async_task( "django_q.tests.tasks.get_user_id", admin_user, broker=broker, group="test_j" ) # q_options and save opt_out test k = async_task( "django_q.tests.tasks.get_user_id", admin_user, q_options={"broker": broker, "group": "test_k", "save": False, "timeout": 90}, ) # test unicode assert Task(name="Amalia").__str__() == "Amalia" # check if everything has a task id assert isinstance(a, str) assert isinstance(b, str) assert isinstance(c, str) assert isinstance(d, str) assert isinstance(e, str) assert isinstance(f, str) assert isinstance(g, str) assert isinstance(h, str) assert isinstance(j, str) assert isinstance(k, str) # run the cluster to execute the tasks task_count = 10 assert broker.queue_size() == task_count task_queue = Queue() stop_event = Event() stop_event.set() # push the tasks for _ in range(task_count): pusher(task_queue, stop_event, broker=broker) assert broker.queue_size() == 0 assert task_queue.qsize() == task_count task_queue.put("STOP") # test wait timeout assert result(j, wait=10) is None assert fetch(j, wait=10) is None assert result_group("test_j", wait=10) is None assert result_group("test_j", count=2, wait=10) is None assert fetch_group("test_j", wait=10) is None assert fetch_group("test_j", count=2, wait=10) is None # let a worker handle them result_queue = Queue() worker(task_queue, result_queue, Value("f", -1)) assert result_queue.qsize() == task_count result_queue.put("STOP") # store the results monitor(result_queue) assert result_queue.qsize() == 0 # Check the results # task a result_a = fetch(a) assert result_a is not None assert result_a.success is True assert result(a) == 1506 # task b result_b = fetch(b) assert result_b is not None assert result_b.success is True assert result(b) == 1506 # task c result_c = fetch(c) assert result_c is not None assert result_c.success is False # task d result_d = fetch(d) assert result_d is not None assert result_d.success is False # task e result_e = fetch(e) assert result_e is not None assert result_e.success is True assert result(e) is None # task f result_f = fetch(f) assert result_f is not None assert result_f.success is True assert result(f) == 1506 # task g result_g = fetch(g) assert result_g is not None assert result_g.success is True assert result(g) == "John" # task h result_h = fetch(h) assert result_h is not None assert result_h.success is True assert result(h) == 12 # task j result_j = fetch(j) assert result_j is not None assert result_j.success is True assert result_j.result == result_j.args[0].id # check fetch, result by name assert fetch(result_j.name) == result_j assert result(result_j.name) == result_j.result # groups assert result_group("test_j")[0] == result_j.result assert result_j.group_result()[0] == result_j.result assert result_group("test_j", failures=True)[0] == result_j.result assert result_j.group_result(failures=True)[0] == result_j.result assert fetch_group("test_j")[0].id == [result_j][0].id assert fetch_group("test_j", failures=False)[0].id == [result_j][0].id assert count_group("test_j") == 1 assert result_j.group_count() == 1 assert count_group("test_j", failures=True) == 0 assert result_j.group_count(failures=True) == 0 assert delete_group("test_j") == 1 assert result_j.group_delete() == 0 deleted_group = delete_group("test_j", tasks=True) assert deleted_group is None or deleted_group[0] == 0 # Django 1.9 deleted_group = result_j.group_delete(tasks=True) assert deleted_group is None or deleted_group[0] == 0 # Django 1.9 # task k should not have been saved assert fetch(k) is None assert fetch(k, 100) is None assert result(k, 100) is None broker.delete_queue() @pytest.mark.django_db @pytest.mark.parametrize( "cluster_config_timeout, async_task_kwargs", ( (1, {}), (10, {"timeout": 1}), (None, {"timeout": 1}), ), ) def test_timeout(broker, cluster_config_timeout, async_task_kwargs): # set up the Sentinel broker.list_key = "timeout_test:q" broker.purge_queue() async_task("time.sleep", 5, broker=broker, **async_task_kwargs) start_event = Event() stop_event = Event() cluster_id = uuidlib.uuid4() # Set a timer to stop the Sentinel threading.Timer(3, stop_event.set).start() s = Sentinel( stop_event, start_event, cluster_id=cluster_id, broker=broker, timeout=cluster_config_timeout, ) assert start_event.is_set() assert s.status() == Conf.STOPPED assert s.reincarnations == 1 broker.delete_queue() @pytest.mark.django_db @pytest.mark.parametrize( "cluster_config_timeout, async_task_kwargs", ( (5, {}), (10, {"timeout": 5}), (1, {"timeout": 5}), (None, {"timeout": 5}), ), ) def test_timeout_task_finishes(broker, cluster_config_timeout, async_task_kwargs): # set up the Sentinel broker.list_key = "timeout_test:q" broker.purge_queue() async_task("time.sleep", 3, broker=broker, **async_task_kwargs) start_event = Event() stop_event = Event() cluster_id = uuidlib.uuid4() # Set a timer to stop the Sentinel threading.Timer(6, stop_event.set).start() s = Sentinel( stop_event, start_event, cluster_id=cluster_id, broker=broker, timeout=cluster_config_timeout, ) assert start_event.is_set() assert s.status() == Conf.STOPPED assert s.reincarnations == 0 broker.delete_queue() @pytest.mark.django_db def test_recycle(broker, monkeypatch, django_assert_num_queries): # set up the Sentinel broker.list_key = "test_recycle_test:q" async_task("django_q.tests.tasks.multiply", 2, 2, broker=broker) async_task("django_q.tests.tasks.multiply", 2, 2, broker=broker) async_task("django_q.tests.tasks.multiply", 2, 2, broker=broker) start_event = Event() stop_event = Event() cluster_id = uuidlib.uuid4() # override settings monkeypatch.setattr(Conf, "RECYCLE", 2) monkeypatch.setattr(Conf, "WORKERS", 1) # set a timer to stop the Sentinel threading.Timer(3, stop_event.set).start() s = Sentinel(stop_event, start_event, cluster_id=cluster_id, broker=broker) assert start_event.is_set() assert s.status() == Conf.STOPPED assert s.reincarnations == 1 async_task("django_q.tests.tasks.multiply", 2, 2, broker=broker) async_task("django_q.tests.tasks.multiply", 2, 2, broker=broker) task_queue = Queue() result_queue = Queue() # push two tasks pusher(task_queue, stop_event, broker=broker) pusher(task_queue, stop_event, broker=broker) # worker should exit on recycle worker(task_queue, result_queue, Value("f", -1)) # check if the work has been done assert result_queue.qsize() == 2 # save_limit test monkeypatch.setattr(Conf, "SAVE_LIMIT", 1) result_queue.put("STOP") # run monitor with django_assert_num_queries(12): monitor(result_queue) assert Success.objects.count() == Conf.SAVE_LIMIT broker.delete_queue() @pytest.mark.django_db def test_save_limit_per_func(broker, monkeypatch): # set up the Sentinel broker.list_key = "test_recycle_test:q" async_task("django_q.tests.tasks.hello", broker=broker) async_task("django_q.tests.tasks.countdown", 2, broker=broker) async_task("django_q.tests.tasks.multiply", 2, 2, broker=broker) start_event = Event() stop_event = Event() cluster_id = uuidlib.uuid4() task_queue = Queue() result_queue = Queue() # override settings monkeypatch.setattr(Conf, "RECYCLE", 3) monkeypatch.setattr(Conf, "WORKERS", 1) # set a timer to stop the Sentinel threading.Timer(3, stop_event.set).start() for i in range(3): pusher(task_queue, stop_event, broker=broker) worker(task_queue, result_queue, Value("f", -1)) s = Sentinel(stop_event, start_event, cluster_id=cluster_id, broker=broker) assert start_event.is_set() assert s.status() == Conf.STOPPED # worker should exit on recycle # check if the work has been done assert result_queue.qsize() == 3 # save_limit test monkeypatch.setattr(Conf, "SAVE_LIMIT", 1) monkeypatch.setattr(Conf, "SAVE_LIMIT_PER", "func") result_queue.put("STOP") # run monitor monitor(result_queue) assert Success.objects.count() == 3 assert set(Success.objects.filter().values_list("func", flat=True)) == { "django_q.tests.tasks.countdown", "django_q.tests.tasks.hello", "django_q.tests.tasks.multiply", } broker.delete_queue() @pytest.mark.django_db def test_max_rss(broker, monkeypatch): # set up the Sentinel broker.list_key = "test_max_rss_test:q" async_task("django_q.tests.tasks.multiply", 2, 2, broker=broker) start_event = Event() stop_event = Event() cluster_id = uuidlib.uuid4() # override settings monkeypatch.setattr(Conf, "MAX_RSS", 20000) monkeypatch.setattr(Conf, "WORKERS", 1) # set a timer to stop the Sentinel threading.Timer(3, stop_event.set).start() s = Sentinel(stop_event, start_event, cluster_id=cluster_id, broker=broker) assert start_event.is_set() assert s.status() == Conf.STOPPED assert s.reincarnations == 1 async_task("django_q.tests.tasks.multiply", 2, 2, broker=broker) task_queue = Queue() result_queue = Queue() # push the task pusher(task_queue, stop_event, broker=broker) # worker should exit on recycle worker(task_queue, result_queue, Value("f", -1)) # check if the work has been done assert result_queue.qsize() == 1 # save_limit test monkeypatch.setattr(Conf, "SAVE_LIMIT", 1) result_queue.put("STOP") # run monitor monitor(result_queue) assert Success.objects.count() == Conf.SAVE_LIMIT broker.delete_queue() @pytest.mark.django_db def test_bad_secret(broker, monkeypatch): broker.list_key = "test_bad_secret:q" async_task("math.copysign", 1, -1, broker=broker) stop_event = Event() stop_event.set() start_event = Event() cluster_id = uuidlib.uuid4() s = Sentinel( stop_event, start_event, cluster_id=cluster_id, broker=broker, start=False ) Stat(s).save() # change the SECRET monkeypatch.setattr(Conf, "SECRET_KEY", "OOPS") stat = Stat.get_all() assert len(stat) == 0 assert Stat.get(pid=s.parent_pid, cluster_id=cluster_id) is None task_queue = Queue() pusher(task_queue, stop_event, broker=broker) result_queue = Queue() task_queue.put("STOP") worker( task_queue, result_queue, Value("f", -1), ) assert result_queue.qsize() == 0 broker.delete_queue() @pytest.mark.django_db def test_attempt_count(broker, monkeypatch): monkeypatch.setattr(Conf, "MAX_ATTEMPTS", 3) tag = uuid() task = { "id": tag[1], "name": tag[0], "func": "math.copysign", "args": (1, -1), "kwargs": {}, "started": timezone.now(), "stopped": timezone.now(), "success": False, "result": None, } # initial save - no success save_task(task, broker) assert Task.objects.filter(id=task["id"]).exists() saved_task = Task.objects.get(id=task["id"]) assert saved_task.attempt_count == 1 sleep(0.5) # second save task["stopped"] = timezone.now() save_task(task, broker) saved_task = Task.objects.get(id=task["id"]) assert saved_task.attempt_count == 2 # third save - task["stopped"] = timezone.now() save_task(task, broker) saved_task = Task.objects.get(id=task["id"]) assert saved_task.attempt_count == 3 # task should be removed from queue assert broker.queue_size() == 0 @pytest.mark.django_db def test_update_failed(broker): tag = uuid() task = { "id": tag[1], "name": tag[0], "func": "math.copysign", "args": (1, -1), "kwargs": {}, "started": timezone.now(), "stopped": timezone.now(), "success": False, "result": None, } # initial save - no success save_task(task, broker) assert Task.objects.filter(id=task["id"]).exists() saved_task = Task.objects.get(id=task["id"]) assert saved_task.success is False sleep(0.5) # second save - no success old_stopped = task["stopped"] task["stopped"] = timezone.now() save_task(task, broker) saved_task = Task.objects.get(id=task["id"]) assert saved_task.stopped > old_stopped # third save - success task["stopped"] = timezone.now() task["result"] = "result" task["success"] = True save_task(task, broker) saved_task = Task.objects.get(id=task["id"]) assert saved_task.success is True # fourth save - no success task["result"] = None task["success"] = False task["stopped"] = old_stopped save_task(task, broker) # should not overwrite success saved_task = Task.objects.get(id=task["id"]) assert saved_task.success is True assert saved_task.result == "result" @pytest.mark.django_db def test_acknowledge_failure_override(): class VerifyAckMockBroker(Broker): def __init__(self, *args, **kwargs): super(VerifyAckMockBroker, self).__init__(*args, **kwargs) self.acknowledgements = {} def acknowledge(self, task_id): count = self.acknowledgements.get(task_id, 0) self.acknowledgements[task_id] = count + 1 tag = uuid() task_fail_ack = { "id": tag[1], "name": tag[0], "ack_id": "test_fail_ack_id", "ack_failure": True, "func": "math.copysign", "args": (1, -1), "kwargs": {}, "started": timezone.now(), "stopped": timezone.now(), "success": False, "result": None, } tag = uuid() task_fail_no_ack = task_fail_ack.copy() task_fail_no_ack.update( {"id": tag[1], "name": tag[0], "ack_id": "test_fail_no_ack_id"} ) del task_fail_no_ack["ack_failure"] tag = uuid() task_success_ack = task_fail_ack.copy() task_success_ack.update( { "id": tag[1], "name": tag[0], "ack_id": "test_success_ack_id", "success": True, } ) del task_success_ack["ack_failure"] result_queue = Queue() result_queue.put(task_fail_ack) result_queue.put(task_fail_no_ack) result_queue.put(task_success_ack) result_queue.put("STOP") broker = VerifyAckMockBroker(list_key="key") monitor(result_queue, broker) assert broker.acknowledgements.get("test_fail_ack_id") == 1 assert broker.acknowledgements.get("test_fail_no_ack_id") is None assert broker.acknowledgements.get("test_success_ack_id") == 1 class TestSignals: @pytest.mark.django_db def test_pre_enqueue_signal(self, broker): broker.list_key = "pre_enqueue_test:q" broker.delete_queue() self.signal_was_called: bool = False self.task: Optional[dict] = None def handler(sender, task, **kwargs): self.signal_was_called = True self.task = task pre_enqueue.connect(handler) task_id = async_task("math.copysign", 1, -1, broker=broker) assert self.signal_was_called is True assert self.task.get("id") == task_id pre_enqueue.disconnect(handler) broker.delete_queue() @pytest.mark.django_db def test_pre_execute_signal(self, broker): broker.list_key = "pre_execute_test:q" broker.delete_queue() self.signal_was_called: bool = False self.task: Optional[dict] = None self.func = None def handler(sender, task, func, **kwargs): self.signal_was_called = True self.task = task self.func = func pre_execute.connect(handler) task_id = async_task("math.copysign", 1, -1, broker=broker) task_queue = Queue() result_queue = Queue() event = Event() event.set() pusher(task_queue, event, broker=broker) task_queue.put("STOP") worker(task_queue, result_queue, Value("f", -1)) result_queue.put("STOP") monitor(result_queue, broker) broker.delete_queue() assert self.signal_was_called is True assert self.task.get("id") == task_id assert self.func == copysign pre_execute.disconnect(handler) @pytest.mark.django_db def test_post_execute_signal(self, broker): broker.list_key = "post_execute_test:q" broker.delete_queue() self.signal_was_called: bool = False self.task: Optional[dict] = None self.func = None def handler(sender, task, **kwargs): self.signal_was_called = True self.task = task post_execute.connect(handler) task_id = async_task("math.copysign", 1, -1, broker=broker) task_queue = Queue() result_queue = Queue() event = Event() event.set() pusher(task_queue, event, broker=broker) task_queue.put("STOP") worker(task_queue, result_queue, Value("f", -1)) result_queue.put("STOP") monitor(result_queue, broker) broker.delete_queue() assert self.signal_was_called is True assert self.task.get("id") == task_id assert self.task.get("result") == -1 post_execute.disconnect(handler) @pytest.mark.django_db def test_post_execute_in_worker_signal(self, broker): broker.list_key = "post_execute_in_worker_test:q" broker.delete_queue() self.signal_was_called: bool = False self.task: Optional[dict] = None self.func = None def handler(sender, task, **kwargs): self.signal_was_called = True self.task = task post_execute_in_worker.connect(handler) task_id = async_task("math.copysign", 1, -1, broker=broker) task_queue = Queue() result_queue = Queue() event = Event() event.set() pusher(task_queue, event, broker=broker) task_queue.put("STOP") worker(task_queue, result_queue, Value("f", -1)) result_queue.put("STOP") monitor(result_queue, broker) broker.delete_queue() assert self.signal_was_called is True assert self.task.get("id") == task_id assert self.task.get("result") == -1 post_execute_in_worker.disconnect(handler) @pytest.mark.django_db def assert_result(task): assert task is not None assert task.success is True assert task.result == 1506 @pytest.mark.django_db def assert_bad_result(task): assert task is not None assert task.success is False @pytest.mark.django_db def test_add_months(): # add some months initial_date = datetime(2020, 2, 2) new_date = add_months(initial_date, 3) assert new_date.year == 2020 assert new_date.month == 5 assert new_date.day == 2 # push to next year initial_date = datetime(2020, 11, 2) new_date = add_months(initial_date, 3) assert new_date.year == 2021 assert new_date.month == 2 assert new_date.day == 2 # last day of the month initial_date = datetime(2020, 1, 31) new_date = add_months(initial_date, 1) assert new_date.year == 2020 assert new_date.month == 2 assert new_date.day == 29 @pytest.mark.django_db def test_add_years(): # add some months initial_date = datetime(2020, 2, 2) new_date = add_years(initial_date, 1) assert new_date.year == 2021 assert new_date.month == 2 assert new_date.day == 2 # test leap year initial_date = datetime(2020, 2, 29) new_date = add_years(initial_date, 1) assert new_date.year == 2021 assert new_date.month == 2 assert new_date.day == 28