[1.11.x] Fixed #27850 -- Made RelatedFieldWidgetWrapper call render() of the wrapped widget.

Backport of fb7e0e01af5364987de7fc95ae4d66e22130f2bc from master

1 files changed, 16 insertions, 0 deletions

diff --git a/tests/admin_widgets/tests.py b/tests/admin_widgets/tests.py
index b74df4e251..8c05fa4331 100644
--- a/tests/admin_widgets/tests.py
+++ b/tests/admin_widgets/tests.py
@@ -599,6 +599,7 @@ class ManyToManyRawIdWidgetTest(TestCase):
         )
 
 
+@override_settings(ROOT_URLCONF='admin_widgets.urls')
 class RelatedFieldWidgetWrapperTests(SimpleTestCase):
     def test_no_can_add_related(self):
         rel = Individual._meta.get_field('parent').remote_field
@@ -633,6 +634,21 @@ class RelatedFieldWidgetWrapperTests(SimpleTestCase):
         self.assertTrue(wrapper.can_change_related)
         self.assertFalse(wrapper.can_delete_related)
 
+    def test_custom_widget_render(self):
+        class CustomWidget(forms.Select):
+            def render(self, *args, **kwargs):
+                return 'custom render output'
+        rel = Album._meta.get_field('band').remote_field
+        widget = CustomWidget()
+        wrapper = widgets.RelatedFieldWidgetWrapper(
+            widget, rel, widget_admin_site,
+            can_add_related=True,
+            can_change_related=True,
+            can_delete_related=True,
+        )
+        output = wrapper.render('name', 'value')
+        self.assertIn('custom render output', output)
+
 
 @override_settings(ROOT_URLCONF='admin_widgets.urls')
 class AdminWidgetSeleniumTestCase(AdminSeleniumTestCase):