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_parse_include():
    filepaths, current_line = mariofile.parse_include(INCLUDE_FILE.splitlines(True))
    assert filepaths == ['prova.ini', 'altrofile.ini']
    assert current_line == 4
    filepaths, current_line = mariofile.parse_include(INCLUDE_UNIQUE_FILE.splitlines(True))
    assert filepaths == ['prova.ini']
    assert current_line == 1