docstr: Re-parsing the secrets file is thread-safe.
docstr_tok: ["Re-parsing","the","secrets","file","is","thread-safe","."]
code: def test_reload_secrets(self, _):
      """Re-parsing the secrets file is thread-safe."""
  
      def reload_secrets(_: int) -> None:
          # Reset secrets, and then access a secret to reparse.
          self.secrets._reset()
          self.assertEqual(self.secrets["db_username"], "Jane")
  
      call_on_threads(reload_secrets, num_threads=self.NUM_THREADS)
  
imports: import os
  import tempfile
  import unittest
  from collections.abc import Mapping
  from collections.abc import MutableMapping
  from typing import Mapping, MutableMapping
  from unittest.mock import MagicMock, mock_open, patch
  from parameterized import parameterized
  from toml import TomlDecodeError
  from streamlit.runtime.secrets import SECRETS_FILE_LOCS, AttrDict, Secrets
  from tests.exception_capturing_thread import call_on_threads
label_desc: Use image node_id 4 for calling the SecretsThreadingTests obj's underlying member method code with example usage: obj.test_reload_secrets(_) without return types