content: from tests.background_callback.utils import setup_background_callback_app
  
  
  def test_lcbc017_long_callback_set_props(dash_duo, manager):
      with setup_background_callback_app(manager, "app_arbitrary") as app:
          dash_duo.start_server(app)
  
          dash_duo.find_element("#start").click()
  
          dash_duo.wait_for_text_to_equal("#secondary", "first")
          dash_duo.wait_for_style_to_equal(
              "#secondary", "background-color", "rgba(255, 0, 0, 1)"
          )
          dash_duo.wait_for_text_to_equal("#output", "initial")
          dash_duo.wait_for_text_to_equal("#secondary", "second")
          dash_duo.wait_for_text_to_equal("#output", "completed")
  
          dash_duo.find_element("#start-no-output").click()
  
          dash_duo.wait_for_text_to_equal("#no-output", "started")
          dash_duo.wait_for_text_to_equal("#no-output", "completed")
  