code: def client_no_auth():
      # Assuming litellm.proxy.proxy_server is an object
      from litellm.proxy.proxy_server import (
          cleanup_router_config_variables,
      )
  
      cleanup_router_config_variables()
      filepath = os.path.dirname(os.path.abspath(__file__))
      config_fp = f"{filepath}/test_configs/test_cloudflare_azure_with_cache_config.yaml"
      # initialize can get run in parallel, it sets specific variables for the fast api app, sinc eit gets run in parallel different tests use the wrong variables
      asyncio.run(initialize(config=config_fp, debug=True))
      app = FastAPI()
      app.include_router(router)  # Include your router in the test app
  
      return TestClient(app)
  
file_path: litellm/litellm/tests/test_proxy_server_caching.py
imports: import sys, os
  import traceback
  from dotenv import load_dotenv
  import os, io
  import pytest, logging, asyncio
  import litellm
  from litellm import embedding, completion, completion_cost, Timeout
  from litellm import RateLimitError
  from fastapi.testclient import TestClient
  from fastapi import FastAPI
  from litellm.proxy.proxy_server import router, save_worker_config, initialize
label_desc: Use image node_id 1 for calling a global function with example usage: client_no_auth() and returns: TestClient