class_docstr: Test the config system.
class_docstr_tok: ["Test","the","config","system","."]
code: def test_update_config_with_toml(self):
      self.assertEqual(True, config.get_option("client.caching"))
      toml = textwrap.dedent(
          """
             [client]
             caching = false
          """
      )
      config._update_config_with_toml(toml, "test")
      self.assertEqual(False, config.get_option("client.caching"))
  
imports: import copy
  import os
  import textwrap
  import unittest
  from unittest.mock import MagicMock, mock_open, patch
  import pytest
  from parameterized import parameterized
  from streamlit import config, env_util
  from streamlit.config_option import ConfigOption
  from streamlit.errors import StreamlitAPIException
label_desc: Use image node_id 25 for calling the ConfigTest obj's underlying member method code with example usage: obj.test_update_config_with_toml() without return types