@testing.requires.two_phase_transactions
    def test_rollback_on_prepare(self):
        User = self.classes.User
        s = self.session(twophase=True)

        u = User(name='ed')
        s.add(u)
        s.prepare()
        s.rollback()

        assert s not in u
dataset/ETHPy150Open zzzeek/sqlalchemy/test/orm/test_transaction.py/TwoPhaseTest.test_rollback_on_prepare/swapped operands of `not in`