def METHOD_NAME(self, level):
    log_file_path = os.path.abspath(os.path.join("tmp", "log_file.txt"))
    with patch('logging.root', logging.RootLogger(logging.NOTSET)):
        read_log_config({
            'LOG_FILE': log_file_path,
            'LOG_LEVEL': level,
            'LOG_MAX_SIZE_IN_BYTES': 100,
            'LOG_BACKUP_COUNT': 10,
        })
        logger = logging.getLogger('oasislmf')
        self.assertEqual(level, logger.level)
        self.assertEqual(1, len(logger.handlers))
        handler = logger.handlers[0]
        self.assertIsInstance(handler, RotatingFileHandler)
        self.assertEqual(log_file_path, handler.baseFilename)
        self.assertEqual(100, handler.maxBytes)
        self.assertEqual(10, handler.backupCount)