Django 测试视图 - 出现错误 - DiscoverRunner.run_tests() 需要 2 个位置参数，但给出了 3 个

Question

我使用 Django 框架创建基本的 Web 应用程序。我开始为我的观点编写测试。我遵循 django 文档并解决了一些问题。但现在我陷入了困境 - 即使在搜索答案 30 分钟后我也不知道为什么会收到此错误。

    C:\Osobni\realityAuctionClient\venv\Scripts\python.exe "C:/Program Files/JetBrains/PyCharm 2022.3.3/plugins/python/helpers/pycharm/django_test_manage.py" test realityAuctionClientWeb.test_views.TestViews.test_start_view C:\Osobni\realityAuctionClient 
Testing started at 7:41 ...
Traceback (most recent call last):
  File "C:\Program Files\JetBrains\PyCharm 2022.3.3\plugins\python\helpers\pycharm\django_test_manage.py", line 168, in <module>
    utility.execute()
  File "C:\Program Files\JetBrains\PyCharm 2022.3.3\plugins\python\helpers\pycharm\django_test_manage.py", line 142, in execute
    _create_command().run_from_argv(self.argv)
  File "C:\Osobni\realityAuctionClient\venv\Lib\site-packages\django\core\management\commands\test.py", line 24, in run_from_argv
    super().run_from_argv(argv)
  File "C:\Osobni\realityAuctionClient\venv\Lib\site-packages\django\core\management\base.py", line 412, in run_from_argv
    self.execute(*args, **cmd_options)
  File "C:\Osobni\realityAuctionClient\venv\Lib\site-packages\django\core\management\base.py", line 458, in execute
    output = self.handle(*args, **options)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Program Files\JetBrains\PyCharm 2022.3.3\plugins\python\helpers\pycharm\django_test_manage.py", line 104, in handle
    failures = TestRunner(test_labels, **options)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Program Files\JetBrains\PyCharm 2022.3.3\plugins\python\helpers\pycharm\django_test_runner.py", line 254, in run_tests
    return DjangoTeamcityTestRunner(**options).run_tests(test_labels,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Program Files\JetBrains\PyCharm 2022.3.3\plugins\python\helpers\pycharm\django_test_runner.py", line 156, in run_tests
    return super(DjangoTeamcityTestRunner, self).run_tests(test_labels, extra_tests, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: DiscoverRunner.run_tests() takes 2 positional arguments but 3 were given

Process finished with exit code 1

Empty suite

---

我的测试.py 看起来像这样：

 import django
from django.test import TestCase
from django.urls import reverse


class TestViews(TestCase):

    def test_start_view(self):
        """
        Test that the start view returns a 200 response and uses the correct template
        """
        django.setup()
        url = reverse("start")
        resp = self.client.get(url)

        self.assertEqual(resp.status_code, 200)

我使用 python 3.11 和 django 5.0a1。有人有线索吗？我认为它与设置有某种联系，但我不知道如何。

Answer 1

Django 在 Django 5.0 中删除了参数

extra_tests

，并且

PyCharm

的测试运行程序仍然提供它。

参见 django 的发行说明：

DiscoverRunner.build_suite() 和 DiscoverRunner.run_tests() 的 extra_tests 参数已删除。

您可以降级到 django 4.2，直到此问题得到解决。

存在与此弃用相关的 Pycharm 问题，请参阅 PY-53355。