code: def test_run_tree_info(self):
      config_file_path = os.path.join(
          os.path.dirname(__name__), "config", "test_config.ini"
      )
      luigi.configuration.LuigiConfigParser.add_config_path(
          config_file_path
      )
      os.environ.setdefault("test_param", "test")
      tree_info = gokart.tree_info(
          mode="simple", output_path="tree.txt"
      )
      with self.assertRaises(SystemExit):
          gokart.run()
      self.assertTrue(
          gokart.make_tree_info(_DummyTask(param="test")),
          tree_info.output().load(),
      )
  
file_path: gokart/test/test_run.py
imports: import os
  import unittest
  from unittest.mock import MagicMock, patch
  import luigi
  import luigi.mock
  import gokart
  from gokart.run import _try_to_send_event_summary_to_slack
label_desc: Use image node_id 4 for calling the RunTest obj's underlying member method code with example usage: obj.test_run_tree_info() without return types