code: def test_debug_mode_enable_dev_tools(
      empty_environ, debug_env, debug, expected
  ):
      if debug_env:
          os.environ["DASH_DEBUG"] = debug_env
      app = Dash()
      app.enable_dev_tools(debug=debug)
      assert app._dev_tools.ui == expected
  
imports: import os
  import logging
  import pytest
  from flask import Flask
  from dash import Dash, exceptions
  from dash._configs import pathname_configs, DASH_ENV_VARS, get_combined_config, load_dash_env_vars
  from dash._utils import AttributeDict
  from dash._get_paths import app_get_asset_url, app_get_relative_path, app_strip_relative_path, get_asset_url, get_relative_path, strip_relative_path
label_desc: Use image node_id 28 for calling a global function with example usage: test_debug_mode_enable_dev_tools(empty_environ, debug_env, debug, expected) without return types