code: def test_no_saver():
      saver = NoSaver("test_user", "/")
      assert saver.save("name", "password") is None
      assert saver.load("name") is None
      assert saver.delete("name") is None
  
imports: from unittest import mock
  from llm_studio.app_utils.config import default_cfg
  from llm_studio.app_utils.setting_utils import EnvFileSaver, KeyRingSaver, NoSaver, Secrets, load_default_user_settings
label_desc: Use image node_id 1 for calling a global function with example usage: test_no_saver() without return types