Method setup_mappers

test/orm/test_composites.py:1405–1433

(cls)

    @classmethod
    def setup_mappers(cls):
        a, b = cls.tables.a, cls.tables.b

        class A(cls.Comparable):
            pass

        class B(cls.Comparable):
            pass

        class C(cls.Comparable):
            def __init__(self, b1, b2):
                self.b1, self.b2 = b1, b2

            def __composite_values__(self):
                return self.b1, self.b2

            def __eq__(self, other):
                return (
                    isinstance(other, C)
                    and other.b1 == self.b1
                    and other.b2 == self.b2
                )

        cls.mapper_registry.map_imperatively(
            A,
            a,
            properties={"b2": relationship(B), "c": composite(C, "b1", "b2")},
        )
        cls.mapper_registry.map_imperatively(B, b)

    def test_early_configure(self):
        # test [ticket:2935], that we can call a composite