Method go

test/ext/asyncio/test_session.py:861–888

(legacy_inactive_history_style)

    @testing.fixture
    def one_to_one_fixture(self, registry, async_engine):
        async def go(legacy_inactive_history_style):
            @registry.mapped
            class A:
                __tablename__ = "a"

                id = Column(
                    Integer, primary_key=True, test_needs_autoincrement=True
                )
                b = relationship(
                    "B",
                    uselist=False,
                    _legacy_inactive_history_style=(
                        legacy_inactive_history_style
                    ),
                )

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

            async with async_engine.begin() as conn:
                await conn.run_sync(registry.metadata.create_all)

            return A, B

        return go