1 files changed, 13 insertions, 1 deletions
diff --git a/tests/contenttypes_tests/test_models.py b/tests/contenttypes_tests/test_models.py
index 12010ac781..7644a8ea30 100644
--- a/tests/contenttypes_tests/test_models.py
+++ b/tests/contenttypes_tests/test_models.py
@@ -1,6 +1,6 @@
 from __future__ import unicode_literals
 
-from django.contrib.contenttypes.models import ContentType
+from django.contrib.contenttypes.models import ContentType, ContentTypeManager
 from django.contrib.contenttypes.views import shortcut
 from django.contrib.sites.shortcuts import get_current_site
 from django.db.utils import IntegrityError, OperationalError, ProgrammingError
@@ -168,6 +168,18 @@ class ContentTypesTests(TestCase):
             DeferredProxyModel: proxy_model_ct,
         })
 
+    def test_cache_not_shared_between_managers(self):
+        with self.assertNumQueries(1):
+            ContentType.objects.get_for_model(ContentType)
+        with self.assertNumQueries(0):
+            ContentType.objects.get_for_model(ContentType)
+        other_manager = ContentTypeManager()
+        other_manager.model = ContentType
+        with self.assertNumQueries(1):
+            other_manager.get_for_model(ContentType)
+        with self.assertNumQueries(0):
+            other_manager.get_for_model(ContentType)
+
     @override_settings(ALLOWED_HOSTS=['example.com'])
     def test_shortcut_view(self):
         """