def get_next_id(self):
        try:
            query = {'_id': 'last_id'}
            update = {'$inc': {'id': 1}}
            fn = self.db.internal.find_and_modify
            row = fn(query, update, upsert=True, new=True)
        except Exception as e:
            raise DatabaseException(e)
        return row['id']
def test_call_with_kwargs(self):
        mock_scope_func = Mock()
        SessionMaker = sa.orm.sessionmaker()
        Session = scoped_session(sa.orm.sessionmaker(), mock_scope_func)

        s0 = SessionMaker()
        assert s0.autoflush == True

        mock_scope_func.return_value = 0
        s1 = Session()
        assert s1.autoflush == True

        assert_raises_message(
            sa.exc.InvalidRequestError,
            "Scoped session is already present",
            Session,
            autoflush=False,
        )

        mock_scope_func.return_value = 1
        s2 = Session(autoflush=False)
        assert s2.autoflush == False