Ticket #23370: 23370-test.diff

tests/model_inheritance/tests.py

@@ -255 +255 @@
             1, lambda: ItalianRestaurant.objects.select_related("chef")[0].chef
         )
 
+    def test_select_related_defer(self):
+        r = Restaurant.objects.create(
+            name="Demon Dogs",
+            address="944 W. Fullerton",
+            serves_hot_dogs=True,
+            serves_pizza=False,
+            rating=2
+        )
+        ir = ItalianRestaurant.objects.create(
+            name="Ristorante Miron",
+            address="1234 W. Ash",
+            serves_hot_dogs=False,
+            serves_pizza=False,
+            serves_gnocchi=True,
+            rating=4,
+        )
+        list(Restaurant.objects.select_related("italianrestaurant").defer("italianrestaurant__serves_gnocchi"))
+
     def test_mixin_init(self):
         m = MixinModel()
         self.assertEqual(m.other_attr, 1)