Access basket from view called with unit test in Django Oscar - django

Question

How do I attach a Django Oscar basket that has been created in a unit test to the request object?
# views.py
from django.contrib.auth.mixins import LoginRequiredMixin
from rest_framework.response import Response
from rest_framework.views import APIView
class BasketAPIAddView(LoginRequiredMixin, APIView):
"""
Update basket via REST API.
"""
def delete(self, request, format=None):
#
# cannot access `request.basket` here
#
return Response({})
# tests.py
from django.contrib.auth import get_user_model
from django.urls import reverse
from oscar.test.factories import create_basket
from rest_framework.test import APITestCase
User = get_user_model()
class BasketAPITests(APITestCase):
"""
Basket view test cases.
"""
def test_remove_basket_line(self):
basket = create_basket()
basket.owner = User.objects.create_user('user', password='pass')
basket.save()
self.client.login(username='user', password='password')
self.client.delete(reverse('delete-basket'))

Answer 1

You can do something like:
from django.contrib.auth import get_user_model
from rest_framework import status
from rest_framework.test import APIRequestFactory
from oscar.test.factories import create_basket
User = get_user_model()
class BasketAPITests(APITestCase):
def test_remove_basket_line(self):
"""Check the method BasketAPIAddView.delete works as should."""
# Create the request, note the .delete which is the operation (BasketAPIAddView.delete)
request = APIRequestFactory().delete(reverse('<your url name>'))
# Create the basket
basket = create_basket()
basket.owner = User.objects.create_user('user', password='pass')
basket.save()
# Attach the basket to the request obj
request.basket = create_basket()
# Call the endpoint, with the proper request obj
response = BasketAPIAddView.as_view()(request)
# Some verifications
...
self.assertEqual(response.status_code, status.HTTP_204_NO_CONTENT)
...
The key is to use a request factory and have the object at your will (adding what you need).
For more details you can take a look to https://www.django-rest-framework.org/api-guide/testing/

Answer 2

For normal requests oscar.apps.basket.middleware.BasketMiddleware adds the basket to the request, so it is possible you need to check the settings.MIDDLEWARE that your test project is using, or that the client provided by APITestCase is running middleware.
If you're developing an API you might also want to look at the way django-oscar-api handles session management and middleware.