Fixed #31527 -- Allowed admindocs index to handle non-string URLconfs.

tests/admin_docs/test_views.py

@@ -2,6 +2,7 @@ import sys
 import unittest
 
 from django.conf import settings
+from django.contrib import admin
 from django.contrib.admindocs import utils, views
 from django.contrib.admindocs.views import get_return_data_type, simplify_regex
 from django.contrib.sites.models import Site
@@ -9,7 +10,8 @@ from django.db import models
 from django.db.models import fields
 from django.test import SimpleTestCase, modify_settings, override_settings
 from django.test.utils import captured_stderr
-from django.urls import reverse
+from django.urls import include, path, reverse
+from django.utils.functional import SimpleLazyObject
 
 from .models import Company, Person
 from .tests import AdminDocsTestCase, TestDataMixin
@@ -136,6 +138,21 @@ class AdminDocViewTests(TestDataMixin, AdminDocsTestCase):
         response = self.client.get(reverse('django-admindocs-views-index'))
         self.assertContains(response, 'View documentation')
 
+    def test_callable_urlconf(self):
+        """
+        Index view should correctly resolve view patterns when ROOT_URLCONF is
+        not a string.
+        """
+        def urlpatterns():
+            return (
+                path('admin/doc/', include('django.contrib.admindocs.urls')),
+                path('admin/', admin.site.urls),
+            )
+
+        with self.settings(ROOT_URLCONF=SimpleLazyObject(urlpatterns)):
+            response = self.client.get(reverse('django-admindocs-views-index'))
+            self.assertEqual(response.status_code, 200)
+
 
 @override_settings(TEMPLATES=[{
     'NAME': 'ONE',