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用django芹菜进行单元测试?

celery unit-testing django python

Jason Webb · 技术社区 · 14 年前

我正在尝试为我们的 django-celery 项目。我读过 documentation ,但这并没有给我一个好主意。我不担心在实际的守护进程中测试任务,只担心代码。我主要想知道:

我们如何绕过 task.delay() 在测试中(我试着设置 CELERY_ALWAYS_EAGER = True 但没什么区别?
我们如何使用推荐的测试设置(如果这是最好的方法),而不实际更改我们的设置.py?
我们还能用吗 manage.py test

总的来说,任何提示或芹菜测试技巧都会非常有用。

5 回复 | 直到 14 年前

Community CDub 8 年前

尝试设置:

BROKER_BACKEND = 'memory'

(感谢 asksol 的评论。)

Martin Geisler 9 年前

from django.test import TestCase
from django.test.utils import override_settings
from myapp.tasks import mytask

class AddTestCase(TestCase):

    @override_settings(CELERY_EAGER_PROPAGATES_EXCEPTIONS=True,
                       CELERY_ALWAYS_EAGER=True,
                       BROKER_BACKEND='memory')
    def test_mytask(self):
        result = mytask.delay()
        self.assertTrue(result.successful())

如果要将此应用于所有测试,可以使用芹菜测试运行器,如中所述 http://docs.celeryproject.org/en/2.5/django/unit-testing.html 基本上设置了相同的设置,除了( BROKER_BACKEND = 'memory' ).

TEST_RUNNER = 'djcelery.contrib.test_runner.CeleryTestSuiteRunner'

看看芹菜SuiteRunner的来源,很清楚发生了什么。

Benjamin Sam Dolan 11 年前

下面是我的测试基类的一个摘录 apply_async 方法并记录对它的调用(包括 Task.delay )有点恶心,但在过去的几个月里我一直在用它来满足我的需要。

from django.test import TestCase
from celery.task.base import Task
# For recent versions, Task has been moved to celery.task.app:
# from celery.app.task import Task
# See http://docs.celeryproject.org/en/latest/reference/celery.app.task.html

class CeleryTestCaseBase(TestCase):

    def setUp(self):
        super(CeleryTestCaseBase, self).setUp()
        self.applied_tasks = []

        self.task_apply_async_orig = Task.apply_async

        @classmethod
        def new_apply_async(task_class, args=None, kwargs=None, **options):
            self.handle_apply_async(task_class, args, kwargs, **options)

        # monkey patch the regular apply_sync with our method
        Task.apply_async = new_apply_async

    def tearDown(self):
        super(CeleryTestCaseBase, self).tearDown()

        # Reset the monkey patch to the original method
        Task.apply_async = self.task_apply_async_orig

    def handle_apply_async(self, task_class, args=None, kwargs=None, **options):
        self.applied_tasks.append((task_class, tuple(args), kwargs))

    def assert_task_sent(self, task_class, *args, **kwargs):
        was_sent = any(task_class == task[0] and args == task[1] and kwargs == task[2]
                       for task in self.applied_tasks)
        self.assertTrue(was_sent, 'Task not called w/class %s and args %s' % (task_class, args))

    def assert_task_not_sent(self, task_class):
        was_sent = any(task_class == task[0] for task in self.applied_tasks)
        self.assertFalse(was_sent, 'Task was not expected to be called, but was.  Applied tasks: %s' %                 self.applied_tasks)

下面是一个“从头开始”的例子,说明如何在测试用例中使用它:

mymodule.py

from my_tasks import SomeTask

def run_some_task(should_run):
    if should_run:
        SomeTask.delay(1, some_kwarg=2)

test_mymodule.py

class RunSomeTaskTest(CeleryTestCaseBase):
    def test_should_run(self):
        run_some_task(should_run=True)
        self.assert_task_sent(SomeTask, 1, some_kwarg=2)

    def test_should_not_run(self):
        run_some_task(should_run=False)
        self.assert_task_not_sent(SomeTask)

dorkforce 10 年前

因为我仍然在搜索结果中看到这个,设置覆盖

TEST_RUNNER = 'djcelery.contrib.test_runner.CeleryTestSuiteRunner'

为我工作 Celery Docs

Sibirsky 6 年前

对于2019年来这里的每个人:结帐 this article

Marco Frattallone 6 年前

我就是这么做的

在myapp.tasks.py中,我有:

from celery import shared_task

@shared_task()
def add(a, b):
    return a + b

from django.test import TestCase, override_settings
from myapp.tasks import add


class TasksTestCase(TestCase):

    def setUp(self):
        ...

    @override_settings(CELERY_TASK_ALWAYS_EAGER=True,CELERY_TASK_EAGER_PROPOGATES=True)
    def test_create_sections(self):
        result= add.delay(1,2)
        assert result.successful() == True
        assert result.get() == 3