code: def test_invalid_key(self, key):
      with pytest.raises(AssertionError) as e:
          ConfigOption(key)
      self.assertEqual(
          'Key "%s" has invalid format.' % key, str(e.value)
      )
  
file_path: streamlit/lib/tests/streamlit/config_option_test.py
imports: import unittest
  import pytest
  from parameterized import parameterized
  from streamlit.config_option import ConfigOption, DeprecationError
label_desc: Use image node_id 1 for calling the ConfigOptionTest obj's underlying member method code with example usage: obj.test_invalid_key(key) without return types