code: def test_cdn_picker(monkeypatch):
      assert len(cdn_picker(offline=True)) > 1000
      PORT = 8080
      monkeypatch.setenv("PYDECK_DEV_PORT", PORT)
      assert "localhost:{}".format(PORT) in cdn_picker()
      monkeypatch.delenv("PYDECK_DEV_PORT", raising=False)
      assert CDN_URL in cdn_picker()
  
file_path: deck.gl/bindings/pydeck/tests/io/test_html.py
imports: import html
  import webbrowser
  import pydeck
  from pydeck.io.html import cdn_picker, display_html, iframe_with_srcdoc, in_jupyter, render_json_to_html, deck_to_html, CDN_URL
  from IPython.display import HTML
  from ..fixtures import fixtures
label_desc: Use image node_id 3 for calling a global function with example usage: test_cdn_picker(monkeypatch) without return types