Django unittest WSGI.py

Question

I am creating unittests for Django and using coverage and the wsgi.py file sticks out like a sore thumb with 0% coverage.

When creating unittests, should I create one for the wsgi.py file?

What would be the best way to do this using the standard Django test facility?

wsgi.py code:

import os

from django.core.wsgi import get_wsgi_application
from django.contrib.staticfiles.handlers import StaticFilesHandler

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "ebdjango.settings")

application = StaticFilesHandler(get_wsgi_application())

Steve Mapes · Accepted Answer · 2020-03-03 10:55:31Z

3

Generally speaking you don't create tests for that file as it's created by Django itself so there's little point and it's more of a functional test than a unit test. I tend to add it to the .coveragerc file to ignore it from the reports if you are chasing that 100% file and code coverage - https://coverage.readthedocs.io/en/v4.5.x/config.html.

answered Mar 3, 2020 at 10:55

Steve Mapes

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2 Comments

MarkyMark1000 Over a year ago

Thanks for the advice - that's great.

Steve Mapes Over a year ago

@MarkyMark1000 No problem. It you found my answer useful would you mind clicking the up vote to indicate it for anyone in searching in the future who finds your question.

Martin Janeček · Accepted Answer · 2021-02-26 15:43:00Z

3

Since the wsgi.py's responsibility is to provide an application that handles requests, the test should verify that it does so.

While it's true that the file is generated by Django, you can still edit the file and cause the app to break, so testing it definitely could have some value (even though it's not unit test).

This is my approach for testing wsgi.py using pytest:

import pytest
from django.test import RequestFactory
from django.urls import Resolver404

from myapp.wsgi import application


def test_handles_request(rf: RequestFactory):
    with pytest.raises(Resolver404):
        application.resolve_request(rf.get("/"))

Since you wrap the wsgi application in StaticFilesHandler, it would make sense to also test a request for static file (or whatever middleware you wrap the app in).

answered Feb 26, 2021 at 15:43

Martin Janeček

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1 Comment

MarkyMark1000 Over a year ago

Thanks for the comment.

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