Method test_expunge_cascade

test/orm/test_cascade.py:4383–4429

(self)

        eq_(r.cascade, CascadeOptions(expected))

    def test_expunge_cascade(self):
        User, Order, orders, users = (
            self.classes.User,
            self.classes.Order,
            self.tables.orders,
            self.tables.users,
        )

        self.mapper_registry.map_imperatively(Order, orders)
        self.mapper_registry.map_imperatively(
            User,
            users,
            properties={
                "orders": relationship(
                    Order,
                    primaryjoin=(
                        self.tables.users.c.id
                        == foreign(self.tables.orders.c.user_id)
                    ),
                    cascade="expunge",
                    viewonly=True,
                )
            },
        )

        sess = fixture_session()
        u = User(id=1, name="jack")
        sess.add(u)
        sess.add_all(
            [
                Order(id=1, user_id=1, description="someorder"),
                Order(id=2, user_id=1, description="someotherorder"),
            ]
        )
        sess.commit()

        u1 = sess.query(User).first()
        orders = u1.orders
        eq_(len(orders), 2)

        in_(orders[0], sess)
        in_(orders[1], sess)

        sess.expunge(u1)

        not_in(orders[0], sess)
        not_in(orders[1], sess)

    def test_default_none_cascade(self):
        User, Order, orders, users = (