Fixed #21871 -- Fixed Apps.is_installed() for apps with custom label.

Thanks Aymeric for design discussion.

2 files changed, 2 insertions, 0 deletions

diff --git a/tests/apps/apps.py b/tests/apps/apps.py
index a2c49fcbff..7faa63e435 100644
--- a/tests/apps/apps.py
+++ b/tests/apps/apps.py
@@ -10,6 +10,7 @@ class MyAdmin(AppConfig):
 
 class MyAuth(AppConfig):
     name = 'django.contrib.auth'
+    label = 'myauth'
     verbose_name = "All your password are belong to us."
 
 
diff --git a/tests/apps/tests.py b/tests/apps/tests.py
index ad5fd0d609..139bc06a66 100644
--- a/tests/apps/tests.py
+++ b/tests/apps/tests.py
@@ -109,6 +109,7 @@ class AppsTests(TestCase):
     @override_settings(INSTALLED_APPS=SOME_INSTALLED_APPS)
     def test_is_installed(self):
         self.assertTrue(apps.is_installed('django.contrib.admin'))
+        self.assertTrue(apps.is_installed('django.contrib.auth'))
         self.assertTrue(apps.is_installed('django.contrib.staticfiles'))
         self.assertFalse(apps.is_installed('django.contrib.webdesign'))