code: def test_has_level_handler():
      logger = logging.getLogger("flask.app")
      assert not has_level_handler(logger)
  
      handler = logging.StreamHandler()
      logging.root.addHandler(handler)
      assert has_level_handler(logger)
  
      logger.propagate = False
      assert not has_level_handler(logger)
      logger.propagate = True
  
      handler.setLevel(logging.ERROR)
      assert not has_level_handler(logger)
  
file_path: flask/tests/test_logging.py
imports: import logging
  import sys
  from io import StringIO
  import pytest
  from flask.logging import default_handler
  from flask.logging import has_level_handler
  from flask.logging import wsgi_errors_stream
label_desc: Use image node_id 6 for calling a global function with example usage: test_has_level_handler() without return types