code: def test_app_cloud() -> None:
      with run_app_in_cloud(_PATH_INTEGRATIONS_DIR) as (
          _,
          view_page,
          _,
          _,
      ):
          validate_app_functionalities(view_page)
  
file_path: pytorch-lightning/tests/integrations_app/flagship/test_flashy.py
imports: import contextlib
  from time import sleep
  import pytest
  from lightning.app.testing.testing import run_app_in_cloud
  from lightning.app.utilities.imports import _is_playwright_available
  from integrations_app.flagship import _PATH_INTEGRATIONS_DIR
label_desc: Use image node_id 2 for calling a global function with example usage: test_app_cloud() without return types