code: def test_good_key():
      key = os.environ["OPENAI_API_KEY"]
      response = check_valid_key(model="gpt-3.5-turbo", api_key=key)
      assert response == True
  
imports: import sys, os
  from dotenv import load_dotenv
  import copy
  import os
  import pytest
  import litellm
  from litellm.utils import trim_messages, get_token_count, get_valid_models, check_valid_key, validate_environment, function_to_dict, token_counter
label_desc: Use image node_id 12 for calling a global function with example usage: test_good_key() without return types