code: def test_create_and_test_config_from_and_save_pretrained(self):
      config_first = FakeConfig(attribute=10)
  
      with tempfile.TemporaryDirectory() as tmpdirname:
          config_first.save_pretrained(tmpdirname)
          config_second = FakeConfig.from_pretrained(tmpdirname)
  
      self.assertEqual(config_second.to_dict(), config_first.to_dict())
  
file_path: optimum/tests/test_configuration_utils.py
imports: import os
  import tempfile
  import unittest
  from huggingface_hub import HfFolder, delete_repo
  from requests.exceptions import HTTPError
  from transformers.testing_utils import TOKEN, USER, is_staging_test
  from optimum.configuration_utils import BaseConfig
label_desc: Use image node_id 1 for calling the ConfigTester obj's underlying member method code with example usage: obj.test_create_and_test_config_from_and_save_pretrained() without return types