code: def test_setting_cache_dir_env_variable(monkeypatch):
      temp_dir = tempfile.mkdtemp()
      monkeypatch.setenv("GRADIO_EXAMPLES_CACHE", temp_dir)
      with gr.Blocks():
          image = gr.Image()
          image2 = gr.Image()
  
          examples = gr.Examples(
              examples=["test/test_files/bus.png"],
              inputs=image,
              outputs=image2,
              fn=lambda x: x,
              cache_examples=True,
          )
      prediction = examples.load_from_cache(0)
      path_to_cached_file = Path(prediction[0].path)
      assert utils.is_in_or_equal(path_to_cached_file, temp_dir)
      monkeypatch.delenv("GRADIO_EXAMPLES_CACHE", raising=False)
  
imports: import asyncio
  import json
  import os
  import shutil
  import subprocess
  import tempfile
  import time
  from pathlib import Path
  from unittest.mock import patch
  import gradio_client
  import pytest
  from gradio_client import media_data
  from gradio_client import utils
  from pydub import AudioSegment
  from starlette.testclient import TestClient
  from tqdm import tqdm
  import gradio
  from gradio import utils
label_desc: Use image node_id 1 for calling a global function with example usage: test_setting_cache_dir_env_variable(monkeypatch) without return types