Ticket #17565: test-1to1-backref-cache.patch

tests/regressiontests/one_to_one_regress/tests.py

@@ -132 +132 @@
                 Target.objects.exclude(pointer2=None),
                 []
         )
+
+    def test_one_to_one_backref_cache(self):
+        """
+        Test that when an object is fetched through a 1-to-1 relation,
+        the back-reference is cached on the newly fetched object
+        """
+        # Look up the objects again so that we get "fresh" objects
+        r = Restaurant.objects.get(pk = self.r1.pk)
+        p = r.place
+        r2 = p.restaurant
+        self.assertIs(r, r2)
+
+    def test_one_to_one_reverse_backref_cache(self):
+        """
+        Test that when an object is fetched through the reverse of a 1-to-1 relation,
+        the reverse back-reference (really, forward-reference) is cached
+        on the newly fetched object
+        """
+        # Look up the objects again so that we get "fresh" objects
+        p = Place.objects.get(name="Demon Dogs")
+        r = p.restaurant
+        p2 = r.place
+        self.assertIs(p, p2)