Method threeway_fixture

test/orm/test_mapper.py:3380–3412

(self)

    @testing.fixture
    def threeway_fixture(self):
        reg1 = registry()
        reg2 = registry()
        reg3 = registry()

        ab = bc = True

        @reg1.mapped
        class A:
            __tablename__ = "a"
            id = Column(Integer, primary_key=True)

        @reg2.mapped
        class B:
            __tablename__ = "b"
            id = Column(Integer, primary_key=True)
            a_id = Column(ForeignKey(A.id))

        @reg3.mapped
        class C:
            __tablename__ = "c"
            id = Column(Integer, primary_key=True)
            b_id = Column(ForeignKey(B.id))

        if ab:
            A.__mapper__.add_property("b", relationship(B))

        if bc:
            B.__mapper__.add_property("c", relationship(C))

        yield reg1, reg2, reg3

        clear_mappers()

    @testing.fixture
    def threeway_configured_fixture(self, threeway_fixture):