def get_last_tid(self):
        try:
            spec = {'tid': {'$gt': 0}}
            sort = [('tid', -1)]
            row = self.db.docs.find_one(spec, sort=sort)
        except Exception as e:
            raise DatabaseException(e)
        if row:
            return row['tid']
        return 0
def test_below():
    """Less than y."""
    p = are.not_below(4)
    ps = [p(x) for x in range(1, 6)]
    assert ps == [False, False, False, True, True]