def test_model_subclass_proxy(self):
        instance = ConcreteModelSubclassProxy.objects.create()
        instance.delete()
        self.assertEqual(0, ConcreteModelSubclassProxy.objects.count())
        self.assertEqual(0, ConcreteModelSubclass.objects.count())
        self.assertEqual(0, ConcreteModel.objects.count())
Deleting an instance of a model proxying a multi-table inherited
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/tests/modeltests/proxy_model_inheritance/tests.py/MultiTableInheritanceProxyTest.test_model_subclass_proxy