code: def test_set_trial_state_values() -> None:
      base_storage = RDBStorage("sqlite:///:memory:")
      storage = _CachedStorage(base_storage)
      study_id = storage.create_new_study(
          directions=[StudyDirection.MINIMIZE], study_name="test-study"
      )
      trial_id = storage.create_new_trial(study_id)
      storage.set_trial_state_values(
          trial_id, state=TrialState.COMPLETE
      )
  
      cached_trial = storage.get_trial(trial_id)
      base_trial = base_storage.get_trial(trial_id)
  
      assert cached_trial == base_trial
  
file_path: optuna/tests/storages_tests/test_cached_storage.py
imports: from unittest.mock import patch
  import pytest
  import optuna
  from optuna.storages._cached_storage import _CachedStorage
  from optuna.storages._rdb.storage import RDBStorage
  from optuna.study import StudyDirection
  from optuna.trial import TrialState
label_desc: Use image node_id 2 for calling a global function with example usage: test_set_trial_state_values() without return types