code: def test_reseed_if_needed(self) -> None:
      # we have to set a seed in order to be able to get state
      random.seed(codecs.encode("abcdefg", "utf-8"))
      state = random.getstate()
      _reseed_if_needed(using_sysrandom=True, secret_key=None)
      # did NOT reseed
      assert state == random.getstate()
      # monkeypatch
      saved = bokeh.util.token.random
      try:
          bokeh.util.token.random = random
          _reseed_if_needed(using_sysrandom=False, secret_key="abc")
          # DID reseed
          assert state != random.getstate()
      finally:
          bokeh.util.token.random = saved
  
imports: from __future__ import annotations
  import pytest
  import calendar
  import codecs
  import datetime
  import json
  import random
  from unittest.mock import MagicMock, Mock, patch
  from bokeh.util.token import _TOKEN_ZLIB_KEY, _base64_decode, _base64_encode, _get_sysrandom, _reseed_if_needed, _signature, check_token_signature, generate_jwt_token, generate_secret_key, generate_session_id, get_session_id, get_token_payload
  from tests.support.util.env import envset
  import bokeh.util.token
label_desc: Use image node_id 2 for calling the TestSessionId obj's underlying member method code with example usage: obj.test_reseed_if_needed() without return types