[1.10.x] Fixed #24931 -- Made namespaced RegexURLResolvers populate callback strings.

Fixed a regression in 2f16ff5a6cbd71fc6c50e88e4087f3657222e90e.

Thanks Tim Graham for the review.

Backport of 625b8e9295d79650208bfb3fca8bf9e6aaf578e4 from master

2 files changed, 20 insertions, 0 deletions

diff --git a/tests/admin_docs/namespace_urls.py b/tests/admin_docs/namespace_urls.py
new file mode 100644
index 0000000000..d05922c33e
--- /dev/null
+++ b/tests/admin_docs/namespace_urls.py
@@ -0,0 +1,14 @@
+from django.conf.urls import include, url
+from django.contrib import admin
+
+from . import views
+
+backend_urls = ([
+    url(r'^something/$', views.XViewClass.as_view(), name='something'),
+], 'backend')
+
+urlpatterns = [
+    url(r'^admin/doc/', include('django.contrib.admindocs.urls')),
+    url(r'^admin/', admin.site.urls),
+    url(r'^api/backend/', include(backend_urls, namespace='backend')),
+]
diff --git a/tests/admin_docs/tests.py b/tests/admin_docs/tests.py
index ec35f92627..e3091738a8 100644
--- a/tests/admin_docs/tests.py
+++ b/tests/admin_docs/tests.py
@@ -88,6 +88,12 @@ class AdminDocViewTests(TestDataMixin, AdminDocsTestCase):
         # View docstring
         self.assertContains(response, 'Base view for admindocs views.')
 
+    @override_settings(ROOT_URLCONF='admin_docs.namespace_urls')
+    def test_namespaced_view_detail(self):
+        url = reverse('django-admindocs-views-detail', args=['admin_docs.views.XViewClass'])
+        response = self.client.get(url)
+        self.assertContains(response, '<h1>admin_docs.views.XViewClass</h1>')
+
     def test_view_detail_illegal_import(self):
         """
         #23601 - Ensure the view exists in the URLconf.