How do I unit test django urls?

Question

I have achieved 100% test coverage in my application everywhere except my urls.py. Do you have any recommendations for how I could write meaningful unit tests for my URLs?

FWIW This question has arisen as I am experimenting with Test-Driven Development and want failing tests before I write code to fix them.

Answer 1

One way would be to reverse URL names and validate

Example

urlpatterns = [
    url(r'^archive/(\d{4})/$', archive, name="archive"),
    url(r'^archive-summary/(\d{4})/$', archive, name="archive-summary"),
]

Now, in the test

from django.urls import reverse

url = reverse('archive', args=[1988])
assertEqual(url, '/archive/1988/')

url = reverse('archive-summary', args=[1988])
assertEqual(url, '/archive-summary/1988/')

You are probably testing the views anyways.

Now, to test that the URL connect to the right view, you could use resolve

from django.urls import resolve

resolver = resolve('/summary/')
assertEqual(resolver.view_name, 'summary')

Now in the variable resolver (ResolverMatch class instance), you have the following options

 'app_name',
 'app_names',
 'args',
 'func',
 'kwargs',
 'namespace',
 'namespaces',
 'url_name',
 'view_name'

Answer 2

Just complementing the answer from @karthikr (on the basis of his)

-> you may assert that the view in charge of resolve is the one you'd expect using resolver.func.cls

example

from unittest import TestCase
from django.urls import resolve

from foo.api.v1.views import FooView


class TestUrls(TestCase):
    def test_resolution_for_foo(self):
        resolver = resolve('/api/v1/foo')
        self.assertEqual(resolver.func.cls, FooView)