Method setup_mappers

test/ext/test_mutable.py:1557–1566

(cls)

    @classmethod
    def setup_mappers(cls):
        foo = cls.tables.foo

        cls.Point = cls._type_fixture()

        cls.mapper_registry.map_imperatively(
            Foo,
            foo,
            properties={"data": composite(cls.Point, foo.c.x, foo.c.y)},
        )

    def test_evt_on_flush_refresh(self):
        # this still worked prior to #3427 being fixed in any case