PytestDeprecation在测试安装时警告：funcargnames属性是灯具名称的别名

问题描述

在上的教程之后，我创建了一个websocket测试来测试我的websocket连接：

Following tutorial on https://testdriven.io/, I have created a websocket test for testing my websocket connection:

# tests/test_websockets.py

from django.contrib.auth import get_user_model
from django.contrib.auth.models import Group
from django.test import Client
from channels.db import database_sync_to_async
from channels.layers import get_channel_layer
from channels.testing import WebsocketCommunicator
from nose.tools import assert_equal, assert_is_none, assert_is_not_none, assert_true
import pytest

from dc_wb.routing import application
from posts.models import Trip

TEST_CHANNEL_LAYERS = {
    'default': {
        'BACKEND': 'channels.layers.InMemoryChannelLayer',
    },
}


@database_sync_to_async
def create_user(*,username='[email protected]',password='pAssw0rd!',group='rider'):
    # Create user.
    user = get_user_model().objects.create_user(
        username=username,
        password=password
    )

    # Create user group.
    user_group, _ = Group.objects.get_or_create(name=group)
    user.groups.add(user_group)
    user.save()
    return user


@pytest.mark.asyncio
@pytest.mark.django_db(transaction=True)
class TestWebsockets:
    async def test_authorized_user_can_connect(self, settings):
        # Use in-memory channel layers for testing.
        settings.CHANNEL_LAYERS = TEST_CHANNEL_LAYERS
        print(settings.CHANNEL_LAYERS)

        # Force authentication to get session ID.
        client = Client()
        user = await create_user()
        client.force_login(user=user)

        # Pass session ID in headers to authenticate.
        communicator = WebsocketCommunicator(
            application=application,
            path='/taxi/',
            headers=[(
                b'cookie',
                f'sessionid={client.cookies["sessionid"].value}'.encode('ascii')
            )]
        )
        connected, _ = await communicator.connect()
        assert_true(connected)
        await communicator.disconnect()

我创建了 pytest.ini ：

[pytest]
DJANGO_SETTINGS_MODULE = dc_wb.settings
python_files = test_websockets.py

但是每当我运行 pytest ，我刚遇到这个错误：

but whenever I run pytest, I just got this error:

collected 1 item                                                                                                                                                                                                  

trips/tests/test_websockets.py E                                                                                                                                                                            [100%]

===================================================================================================== ERRORS ======================================================================================================
________________________________________________________________________ ERROR at setup of TestWebsockets.test_authorized_user_can_connect ________________________________________________________________________

request = <SubRequest '_django_db_marker' for <Function test_authorized_user_can_connect>>

    @pytest.fixture(autouse=True)
    def _django_db_marker(request):
        """Implement the django_db marker, internal to pytest-django.

        This will dynamically request the ``db``, ``transactional_db`` or
        ``django_db_reset_sequences`` fixtures as required by the django_db marker.
        """
        marker = request.node.get_closest_marker("django_db")
        if marker:
            transaction, reset_sequences = validate_django_db(marker)
            if reset_sequences:
                request.getfixturevalue("django_db_reset_sequences")
            elif transaction:
>               request.getfixturevalue("transactional_db")

../env/lib/python3.7/site-packages/pytest_django/plugin.py:483: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

request = <SubRequest 'transactional_db' for <Function test_authorized_user_can_connect>>, django_db_setup = None, django_db_blocker = <pytest_django.plugin._DatabaseBlocker object at 0x7f743c9e09e8>

    @pytest.fixture(scope="function")
    def transactional_db(request, django_db_setup, django_db_blocker):
        """Require a django test database with transaction support.

        This will re-initialise the django database for each test and is
        thus slower than the normal ``db`` fixture.

        If you want to use the database with transactions you must request
        this resource.

        If multiple database fixtures are requested, they take precedence
        over each other in the following order (the last one wins): ``db``,
        ``transactional_db``, ``django_db_reset_sequences``.
        """
>       if "django_db_reset_sequences" in request.funcargnames:
E       pytest.PytestDeprecationWarning: The `funcargnames` attribute was an alias for `fixturenames`, since pytest 2.3 - use the newer attribute instead.

../env/lib/python3.7/site-packages/pytest_django/fixtures.py:199: PytestDeprecationWarning
================================================================================================ warnings summary =================================================================================================
/tmp/taxi-app/server/env/lib/python3.7/site-packages/nose/importer.py:12
  /tmp/taxi-app/server/env/lib/python3.7/site-packages/nose/importer.py:12: DeprecationWarning: the imp module is deprecated in favour of importlib; see the module's documentation for alternative uses
    from imp import find_module, load_module, acquire_lock, release_lock

-- Docs: https://docs.pytest.org/en/latest/warnings.html
======================================================================================= 1 warnings, 1 error in 0.32 seconds =======================================================================================

我对测试和所有事物都是全新的；我什至不知道它是如何工作的，我尝试了一些研究，但是不了解这些概念，没有什么特别的东西可以解决这个问题。

I'm complete new to testing and all; I'm not even sure how it works, I have tried researching a bit but didn't understand the concepts and there is no particular thing which sorts this out.

推荐答案

该教程建议安装 pytest-django （3.4.8与 pytest =不兼容= 5 ）。通过

The tutorial suggests to install an outdated version of pytest-django (3.4.8 which is incompatible with pytest==5). Upgrade the package via

$ pip install --upgrade "pytest-django>=3.5"

，错误应消失。原因是 pytest-django == 3.4.8 使用 request.funcargnames 来获取灯具名称列表，在 pytest == 5 中已弃用。新版本使用 request.fixturenames 属性，不会引发弃用错误。

and the error should disappear. The reason is that pytest-django==3.4.8 uses request.funcargnames to get the list of fixture names, which was deprecated in pytest==5. The new version uses the request.fixturenames attribute, not raising the deprecation error.

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