Fixed #30436 -- Added check that on_delete is callable in ForeignKey and OneToOneField.

1 files changed, 7 insertions, 0 deletions

diff --git a/tests/delete/tests.py b/tests/delete/tests.py
index 6b1cd3675b..505fd843d7 100644
--- a/tests/delete/tests.py
+++ b/tests/delete/tests.py
@@ -21,6 +21,13 @@ class OnDeleteTests(TestCase):
         a.auto.delete()
         self.assertFalse(A.objects.filter(name='auto').exists())
 
+    def test_non_callable(self):
+        msg = 'on_delete must be callable.'
+        with self.assertRaisesMessage(TypeError, msg):
+            models.ForeignKey('self', on_delete=None)
+        with self.assertRaisesMessage(TypeError, msg):
+            models.OneToOneField('self', on_delete=None)
+
     def test_auto_nullable(self):
         a = create_a('auto_nullable')
         a.auto_nullable.delete()