code: def test_load_argument(self):
      config.load_argument(parser.parse_args())
      self.assertEqual(config.embed_dim, 128)
      self.assertEqual(config.n_head, 1)
  
imports: import unittest
  import argparse
  from parl.utils import logger
  from parl.utils import global_config
label_desc: Use image node_id 1 for calling the TestGlobalConfig obj's underlying member method code with example usage: obj.test_load_argument() without return types