Added unit tests to verify OneToOne deletion works

git-svn-id: http://code.djangoproject.com/svn/django/trunk@1325 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/testapp/models/one_to_one.py

@@ -74,4 +74,7 @@ Demon Dogs the restaurant
 >>> w.save()
 >>> w
 Joe the waiter at Demon Dogs the restaurant
+
+>>> r = restaurants.get_object(pk=1)
+>>> r.delete()
 """