Method test_pickle_load_only

test/orm/test_pickled.py:840–863

load_only() propagates a ``"column:*"`` token within InstanceState.load_options.

(self)

        eq_(PathRegistry.deserialize(path.serialize()).path, path.path)

    def test_pickle_load_only(self):
        """load_only() propagates a ``"column:*"`` token within
        InstanceState.load_options."""

        with fixture_session() as sess:
            u1 = sess.scalars(select(User).options(load_only(User.name))).one()
            sess.expunge_all()

        # prior to the #13493 fix, in a fresh interpreter this raised
        # KeyError: 'column:*'; see
        # test_unpickle_other_process() for that condition
        u2 = pickle.loads(pickle.dumps(u1))

        eq_(
            [
                elem.path.path
                for opt in u2._sa_instance_state.load_options
                for elem in opt.context
            ],
            [
                (inspect(User), inspect(User).attrs.name),
                (inspect(User), PathToken._intern["column:*"]),
            ],
        )

    def test_pickle_wildcard_raiseload(self):
        """raiseload("*") leaves a _LoadLazyAttribute in