code: def test_set_level(self):
      logger.set_level(logger.INFO)
      logger.set_dir("./test_dir")
  
      logger.debug("debug")
      logger.info("info")
      logger.warning("warn")
      logger.error("error")
  
file_path: PARL/parl/utils/tests/logger_test.py
imports: import unittest
  from parl.utils import logger
  import threading
  import os.path
label_desc: Use image node_id 1 for calling the TestLogger obj's underlying member method code with example usage: obj.test_set_level() without return types