APIRequestFactory missing query_params

[PedroDaumas]

Hey everyone, I've been using Django DRF and I'm facing some issues creating unit tests to make sure my pagination is working properly.

I tried using the RequestFactory and the Client to generate a request to pass to the pagination function but the requests created don't come with a query_params making the unit-tests fail.

from django.test import TestCase
from django.test.client import Client
from django.contrib.sessions.middleware import SessionMiddleware
from rest_framework.test import APIRequestFactory, APIClient
from rest_framework.authtoken.models import Token


from trends.common.pagination import StandardPagination

class StandardPaginationTestCase(TestCase):
    def setUp(self):
        self.pagination = StandardPagination()
        self.factory = APIRequestFactory()

    def test_pagination(self):
        # Create a request

        request = self.factory.get("/query", data={"page": 1, "page_size": 10})

        # Create a dummy queryset
        queryset = [
            "item1",
            "item2",
            "item3",
            "item4",
            "item5",
            "item6",
            "item7",
            "item8",
            "item9",
            "item10",
        ]

        # Paginate the queryset
        paginated_queryset = self.pagination.paginate_queryset(queryset, request)

        # Check if pagination is working correctly
        self.assertEqual(len(paginated_queryset), 10)
        self.assertEqual(paginated_queryset[0], "item1")

Error:

Traceback (most recent call last):
  File "/var/lib/trends_backend/tests/common/test_pagination.py", line 37, in test_pagination
    paginated_queryset = self.pagination.paginate_queryset(queryset, request)
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/rest_framework/pagination.py", line 204, in paginate_queryset
    page_size = self.get_page_size(request)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/rest_framework/pagination.py", line 270, in get_page_size
    request.query_params[self.page_size_query_param],
    ^^^^^^^^^^^^^^^^^^^^
AttributeError: 'WSGIRequest' object has no attribute 'query_params'

Pagination:

from rest_framework.pagination import PageNumberPagination


class StandardPagination(PageNumberPagination):
    page_size_query_param = "page_size"
    max_page_size = 100
    page_size = 10

I tried a bunch of different things adding a Session Middleware, and using the default Client and RequestFactory functions instead of DRF ones but nothing worked