在django unitest中设置后，登录会话不再有效

Question

我有以下问题。我正在学习一些教程来了解Django，现在我想做一个视图测试：

view.py

class OwnerListView(LoginRequiredMixin, generic.ListView):
    model = Owner
    paginate_by = 10    

model.py

class Owner(models.Model):

    username = models.TextField(max_length=100)
    
    first_name = models.TextField(null=True, max_length=100)
    
    last_name = models.TextField(null=True, max_length=100)
    
    email = models.EmailField(null=True)
    
    def __str__(self):
        """String for representing the Model object."""
        return self.username
    
    def get_absolute_url(self):
        """Returns the url to access a particular instance of the model."""
        return reverse('owner', args=[int(self.pk)])
    class Meta:
        ordering = ['-username']

url.py (适用于应用程序)：

from django.urls import path

from . import views


urlpatterns = [
    path('owners', views.OwnerListView.as_view(), name='owners'), 
]

我的问题来了。我想测试需要用户登录的视图。但我想在测试开始时这样做，然后再做我想做的所有测试，因为我认为这样会更有时间/代码/处理效率。

因此，我创建了以下代码：tests/test_views.py

from django.test import TestCase, Client
from django.urls import reverse
from django.contrib.auth.models import User

from inventory_items.models import Owner

class OwnerListViewTest(TestCase):
    @classmethod
    def setUpTestData(self):
        # Create 13 authors for pagination tests
        number_of_owners = 13

        for owner_id in range(number_of_owners):
            Owner.objects.create(
                first_name=f'FirstName {owner_id}',
                last_name=f'LastName {owner_id}',
                username=f'Username {owner_id}',
            )
        
        # Login
        User.objects.create_user('john', 'lennon@thebeatles.com', 'johnpassword')
        self.client = Client()
        self.client.login(username='john', password='johnpassword')


    def test_view_url_accessible_by_name(self):
        self.client.login(username='john', password='johnpassword')
        response = self.client.get(reverse('owners'))
        self.assertEqual(response.status_code, 200)


    def test_pagination_is_ten(self):
        # self.client.login(username='john', password='johnpassword')
        response = self.client.get(reverse('owners'))
        self.assertEqual(response.status_code, 200)
        self.assertTrue('is_paginated' in response.context)
        self.assertTrue(response.context['is_paginated'] == True)
        self.assertTrue(len(response.context['owner_list']) == 10)

所以第一个测试运行正常，因为我在测试用例中进行测试，但在第二个测试中，我注释了这一行，因为我希望在设置中完成登录，但它返回302，因为它重定向到登录。

如果我在setup函数中设置会话，为什么没有保留会话？

Answer 1

实际上，我会做一个改变，用setUpClass代替setUpTestData，因为第二个是非常特别的，有关于它的好文章

https://medium.com/an-engineer-a-reader-a-guy/django-test-fixture-setup-setupclass-and-setuptestdata-72b6d944cdef

此外，如果不测试身份验证，则应该使用force_login

https://docs.djangoproject.com/en/3.1/topics/testing/tools/#django.test.Client.force_login