code: def test_read_config(self):
      os.environ.setdefault("test_param", "test")
      config_file_path = os.path.join(
          os.path.dirname(os.path.abspath(__file__)),
          "config",
          "test_config.ini",
      )
      gokart.utils.add_config(config_file_path)
      output = gokart.build(_DummyTask(), reset_register=False)
      self.assertEqual(output, "test")
  
imports: import logging
  import os
  import unittest
  from copy import copy
  import luigi
  import luigi.mock
  import gokart
  from gokart.build import GokartBuildError, LoggerConfig
label_desc: Use image node_id 5 for calling the RunTest obj's underlying member method code with example usage: obj.test_read_config() without return types