1 files changed, 6 insertions, 0 deletions
diff --git a/tests/delete/tests.py b/tests/delete/tests.py
index bf6543d735..d269a08b9d 100644
--- a/tests/delete/tests.py
+++ b/tests/delete/tests.py
@@ -280,6 +280,12 @@ class DeletionTests(TestCase):
         with self.assertRaisesMessage(TypeError, msg):
             M.objects.all()[0:5].delete()
 
+    def test_pk_none(self):
+        m = M()
+        msg = "M object can't be deleted because its id attribute is set to None."
+        with self.assertRaisesMessage(ValueError, msg):
+            m.delete()
+
     def test_m2m(self):
         m = M.objects.create()
         r = R.objects.create()