django - Django LiveServerTestCase - 无法在多个测试中强制登录

Question

版本

• Django 版本： 1.9
• 蟒蛇： 3.5
• Django 休息框架： 3.5.4

观察到的错误：

Error
Traceback (most recent call last):
  File "/Users/ds/git/some_repo/integration/test_multiple_login.py", line 32, in test_two
    self.client.force_login(self.user)
  File "/Users/ds/.pyenv/versions/3.5.7/envs/work_env/lib/python3.5/site-packages/django/test/client.py", line 608, in force_login
    self._login(user)
  File "/Users/ds/.pyenv/versions/3.5.7/envs/work_env/lib/python3.5/site-packages/django/test/client.py", line 621, in _login
    login(request, user)
  File "/Users/ds/.pyenv/versions/3.5.7/envs/work_env/lib/python3.5/site-packages/django/contrib/auth/__init__.py", line 117, in login
    user_logged_in.send(sender=user.__class__, request=request, user=user)
  File "/Users/ds/.pyenv/versions/3.5.7/envs/work_env/lib/python3.5/site-packages/django/dispatch/dispatcher.py", line 192, in send
    response = receiver(signal=self, sender=sender, **named)
  File "/Users/ds/.pyenv/versions/3.5.7/envs/work_env/lib/python3.5/site-packages/django/contrib/auth/models.py", line 23, in update_last_login
    user.save(update_fields=['last_login'])
  File "/Users/ds/.pyenv/versions/3.5.7/envs/work_env/lib/python3.5/site-packages/django/contrib/auth/base_user.py", line 74, in save
    super(AbstractBaseUser, self).save(*args, **kwargs)
  File "/Users/ds/.pyenv/versions/3.5.7/envs/work_env/lib/python3.5/site-packages/django/db/models/base.py", line 708, in save
    force_update=force_update, update_fields=update_fields)
  File "/Users/ds/.pyenv/versions/3.5.7/envs/work_env/lib/python3.5/site-packages/django/db/models/base.py", line 736, in save_base
    updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
  File "/Users/ds/.pyenv/versions/3.5.7/envs/work_env/lib/python3.5/site-packages/django/db/models/base.py", line 805, in _save_table
    raise DatabaseError("Save with update_fields did not affect any rows.")
django.db.utils.DatabaseError: Save with update_fields did not affect any rows.

重现此的示例代码：

from django.test import TestCase, LiveServerTestCase

from paths.factories import UserFactory


class ATestClass(LiveServerTestCase):

    @classmethod
    def setUpClass(cls):
        """
        Test Data common across all tests
        """

        super().setUpClass()

        cls.user = UserFactory(is_staff=False, is_superuser=False)

    def test_one(self):
        """
        Login and then do some actions
        """
        self.client.force_login(self.user)

        # do something
        self.assertTrue(True)

    def test_two(self):
        """
        Login and do some actions
        """

        self.client.force_login(self.user)

        # do something
        self.assertFalse(False)

什么有效？

• 如果我用它替换LiveServerTestCase它TestCase会按预期工作。但是，由于我需要访问，live_server_url我需要从LiveServerTestCase我的用例继承

为什么LiveServerTestCase？

• 我的测试类需要访问live_server_url.

我尝试了什么？

• 我试图将force_login语句移动到setUp方法而不是在测试方法中进行登录 - 没有帮助
• 我尝试断开update_last_login信号user_logged_in.disconnect(update_last_login)- 当信号断开时，这允许测试继续进行（即force_login第二个测试中的语句通过没有任何运行时错误，但实际登录失败并且我正在测试的 API，返回 403 禁止
• 我尝试在声明之前将对象的last_login属性设置为- 没有帮助。self.userNoneforce_login

但是 Django 版本很旧

• 我知道，但由于我无法控制的原因，我无法升级 Django 版本。我正在我自己的测试中寻找一些可行的补丁，我可以用它来让我的用例工作。

标签： djangopython-3.5django-1.9liveservertestcase