code: def test_get_browser_controller_dummy_with_env(
      mock_get: MagicMock,
  ) -> None:
      with envset(BOKEH_BROWSER="bar"):
          bub.get_browser_controller("none")
  
file_path: bokeh/tests/unit/bokeh/util/test_browser.py
imports: from __future__ import annotations
  import pytest
  import os
  import sys
  import webbrowser
  from unittest.mock import MagicMock, patch
  from tests.support.util.env import envset
  import bokeh.util.browser
label_desc: Use image node_id 4 for calling a global function with example usage: test_get_browser_controller_dummy_with_env(mock_get) without return types