Agfdhyk

I am creating a web application which has a POST endpoint, that does two things:

1. Saves the POSTed data (a university review) in the database.


2. Redirects the user to an overview page.

Here is the code for it:

if request.method == 'POST':

    review = Review(university=university,

                    user=User.objects.get(pk=1),

                    summary=request.POST['summary'])



    review.save()



    return HttpResponseRedirect(reverse('university_overview', args=(university_id,)))

I haven't yet implemented passing the user data to the endpoint, and that's why I'm saving everything under the user with pk=1.

My test is as follows:

class UniversityAddReviewTestCase(TestCase):

    def setUp(self):

        user = User.objects.create(username="username", password="password", email="email")

        university = University.objects.create(name="Oxford University", country="UK", info="Meh", rating="9")

        Review.objects.create(university=university, summary="Very nice", user_id=user.id)

        Review.objects.create(university=university, summary="Very bad", user_id=user.id)



        new_review = {

            'summary': 'It was okay.'

        }



        self.response = Client().post('/%s/reviews/add' % university.id, new_review)



    def test_database_updated(self):

        self.assertEqual(len(Review.objects.all()), 3)

The result is this:

  File ".../core/views.py", line 20, in detail

    user=User.objects.get(pk=1),

  File ".../ENV/lib/python3.6/site-packages/django/db/models/manager.py", line 82, in manager_method

    return getattr(self.get_queryset(), name)(*args, **kwargs)

  File ".../ENV/lib/python3.6/site-packages/django/db/models/query.py", line 403, in get

    self.model._meta.object_name

django.contrib.auth.models.DoesNotExist: User matching query does not exist.

Why is this happening? I know the user I'm creating has a pk=1, as when I actually print it during the test it's 1.

pk is defined by the database. Something could make it not equal to 1 in your test.

Try this in your setUp method

user = User.objects.create_user(

    username="username",

    password="password",

    email="test@example.com",

    id=1

)

assert user.pk == 1

Take advantage of using self and then you can try this instead:

class UniversityAddReviewTestCase(TestCase):

    def setUp(self):

        self.user = User.objects.create(

            username="username", 

            password="password", 

            email="email")



        ....

and then

if request.method == 'POST':

    review = Review(

        university=university,

        user=self.user,

        summary=request.POST['summary'])



review.save()