Ticket #17876: better_test.diff

tests/modeltests/defer/tests.py

@@ -147 +147 @@
 
     def test_defer_proxy(self):
         # using select related and only should not result in Exception
-        for obj in ChildProxy.objects.all().select_related().only('id'):
-            continue
+        related = Secondary.objects.create(first='x1', second='x2')
+        ChildProxy.objects.create(name='p1', value='xx', related=related)
+        
+        children = ChildProxy.objects.all().select_related().only('id')
+        
+        # This is different than direct evaluation to list
+        for obj in children:
+            self.assert_delayed(obj, 2)
+            self.assertEqual(obj.name, 'p1')
+            self.assertEqual(obj.value, 'xx')
+            
+        self.assertEqual(len(children), 1)
+