What's the correct way to use RequestFactory to test the views?

[dvf]

Any help would be lovely.

[vitalik]

@dvf could you elaborate more on what you trying to do ?

[dvf]

Thanks for the quick response @vitalik (and thanks for the wonderful library!)

I like testing views outside of the middleware because the tests are super fast and very clean. Auth is simple too. Typically this is done with Django's RequestFactory.

I did a short test with a Ninja paginated view and immediately the @paginated decorator generated errors in the request.

So the clearer questions are:

1. Does Django Ninja support testing with RequestFactory?
2. If so, what are some best practices for it (I'll commit a PR to the docs)?

[vitalik]

@dvf

Django Ninja has built-in test client that skips middlewares and focuses only on view functionality for faster tests (like full suit of django-ninja 100% coverage takes 2seconds on M1 mac)

you can check more details here - https://django-ninja.dev/guides/testing/

[dvf]

@vitalik would appreciate your thoughts and best-practices here. We are using pytest.

The project urls.py looks like this:

api = NinjaAPI(
    title="My API",
    version=settings.RELEASE_VERSION,
    auth=JWTAuth(),
    docs=Swagger(settings={"persistAuthorization": True}),
)

api.add_router("auth/", auth_router)
api.add_router("accounts/", accounts_router)


@api.exception_handler(APIError)
def api_error(request: HttpRequest, exc: APIError):
    return JsonResponse(
        {"error_code": exc.error_code},
        status=exc.http_status_code,
    )

urlpatterns = [
    path("v2/", api.urls),
]

Our api_client fixture in /conftest.py is:

import pytest
from ninja.testing import TestClient

from project.urls import api


@pytest.fixture
def api_test_client():
    return TestClient(api)

An example test looks like:

def test_upsert_nutrients_template_with_id(api_test_client):
    res = api_test_client.get("/foo/test/")
    assert res.status_code == 200

Using this fixture in any test results in the following error:

E               ninja.errors.ConfigError: Looks like you created multiple NinjaAPIs or TestClients
E               To let ninja distinguish them you need to set either unique version or urls_namespace
E                - NinjaAPI(..., version='2.0.0')
E                - NinjaAPI(..., urls_namespace='otherapi')
E               Already registered: ['api-?.?.?']