Method test_add_property

test/orm/test_mapper.py:968–1016

(self)

        is_(User.addresses.info, User.addresses.property.info)

    def test_add_property(self):
        users, addresses, Address = (
            self.tables.users,
            self.tables.addresses,
            self.classes.Address,
        )

        assert_col = []

        class User(ComparableEntity):
            def _get_name(self):
                assert_col.append(("get", self._name))
                return self._name

            def _set_name(self, name):
                assert_col.append(("set", name))
                self._name = name

            name = property(_get_name, _set_name)

        m = self.mapper(User, users)
        self.mapper(Address, addresses)

        m.add_property("_name", deferred(users.c.name))

        m.add_property("name", synonym("_name"))
        m.add_property("addresses", relationship(Address))

        sess = fixture_session()
        assert sess.get(User, 7)

        u = sess.query(User).filter_by(name="jack").one()

        def go():
            eq_(
                len(u.addresses),
                len(self.static.user_address_result[0].addresses),
            )
            eq_(u.name, "jack")
            eq_(assert_col, [("get", "jack")], str(assert_col))

        self.sql_count_(2, go)

        u.name = "ed"
        u3 = User()
        u3.name = "some user"
        sess.add(u3)
        sess.flush()
        sess.rollback()

    def test_add_prop_via_backref_resets_memoizations_reconfigures(self):
        users, User = self.tables.users, self.classes.User