Django 测试如何断言重定向

Question

使用以下代码我得到了错误的结果：nose.proxy.AssertionError: 302 != 200 : 无法检索重定向页面 '/mes_dossiers/': 响应代码为 302（预期为 200）

我的代码有什么问题？

#test.py
from django.test import TestCase, RequestFactory, Client
from ..models import *
from ..views import *
from django.core.management import call_command

class Cas(TestCase):

    def setUp(self):
        call_command('loaddata', 'fixture_users.json', verbosity=1)
        call_command('loaddata', 'xxxxx_tests_xxxx.yaml', 
        verbosity=1)

    def test_dossier_duplicate(self) :
        request = self.factory.get('/dossier/3/copier/', follow = True)
        request.user = User.objects.get(id=3)
        pk = 3
        response = dossier_duplicate(request, pk)
        response.client = Client()
        self.assertRedirects(response,'/mes_dossiers/',status_code=302, 
        target_status_code=200)

#urls.py
urlpatterns = [    
url(r'^dossier/(?P<pk>[0-9]+)/copier/$',views.dossier_duplicate),  

]

#views.py
@login_required(login_url="/accounts/login/")
def dossier_duplicate(request, pk):

    dossier = get_object_or_404(Dossier, pk=pk)
    groupe = dossier.createdBy.groups.all()[0].name

    if not in_group(request.user, groupe) :
        return HttpResponseForbidden('Vous ne pouvez pas accéder à ce 
        dossier')

    else :

        #code to duplicate the "dossier" instance and child contents
        #
        #

        return redirect('/mes_dossiers/')

Answer 1

要测试重定向，您应该使用测试客户端而不是 RequestFactory。

The API for the RequestFactory is a slightly restricted subset of the test client API:

It only has access to the HTTP methods get(), post(), put(), delete(), head(), options(), and trace().

These methods accept all the same arguments except for follows. Since this is just a factory for producing requests, it’s up to you to handle the response.

https://docs.djangoproject.com/en/1.11/topics/testing/advanced/#the-request-factory

尝试将 self.factory.get 更改为 self.client.get

    response = self.client.get('/dossier/3/copier/', follow = True)

Answer 2

我在那里找到了更多示例：

Django : Testing if the page has redirected to the desired url

https://docs.djangoproject.com/en/3.0/topics/testing/tools/#django.test.SimpleTestCase.assertRedirects

这有效：

class Cas(TestCase):

    def setUp(self):
        call_command('loaddata', 'fixture_users.json', verbosity=1)
        call_command('loaddata', 'xxx_tests_xxxx.yaml', 
        verbosity=1)

    def test_dossier_duplicate(self) :
        request = self.client.get('/dossier/3/copier/', follow = True)
        request.user = User.objects.get(id=3)
        pk = 3
        response = dossier_duplicate(request, pk)
        response.client = Client()
        response.client.login(username='xxxx', password='xxxxx')

        self.assertRedirects(response, '/mes_dossiers/', status_code=302, 
        target_status_code=200, fetch_redirect_response=True)

Answer 3

我通过 google 遇到了这个问题，我在测试重定向时遇到了类似的问题。

但我的 Django 是 v2.2，接受的答案引用了不再支持的 v1.7

然后我 google 又在 https://docs.djangoproject.com/en/2.2/topics/testing/tools/#django.test.SimpleTestCase.settings

找到了这个代码块

from django.test import TestCase

class LoginTestCase(TestCase):

    def test_login(self):

        # First check for the default behavior
        response = self.client.get('/sekrit/')
        self.assertRedirects(response, '/accounts/login/?next=/sekrit/')

我自己修改了，效果很好。

对于 OP 案例，这是我认为应该工作的方式如果 OP 使用 2.2

def test_dossier_duplicate(self) :
    response = self.client.get('/dossier/3/copier/')
    self.assertRedirects(response, '/mes_dossiers/')

我把它留在这里。如果未来的读者有类似的问题，但有 Django v2.2

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