text: from guizero import App, Text, Picture
  from common_test import (
      schedule_after_test,
      schedule_repeat_test,
      display_test,
      events_test,
      cascading_enable_test,
      cascading_properties_test,
      inheriting_properties_test,
      full_screen_test,
      add_tk_widget_test)
  
  def test_default_values():
      a = App()
      assert a.title == "guizero"
      assert a.width == 500
      assert a.height == 500
      assert a.layout == "auto"
      assert a.description > ""
      a.destroy()
  
  def test_alt_values():
      a = App(title = "foo", width = 666, height = 666, layout="grid")
      assert a.title == "foo"
      assert a.width == 666
      assert a.height == 666
      assert a.layout == "grid"
      a.destroy()
  
  def test_getters_setters():
      a = App()
      a.title = "bar"
      assert a.title == "bar"
      a.bg = "red"
      assert a.bg == "red"
      a.height = 666
      assert a.height == 666
      a.width = 666
      assert a.width == 666
      a.destroy()
  
  def test_update():
      a = App()
      # just testing it doesnt fail
      a.update()
      a.destroy()
  
  def test_after_schedule():
      a = App()
      schedule_after_test(a, a)
      a.destroy()
  
  def test_repeat_schedule():
      a = App()
      schedule_repeat_test(a, a)
      a.destroy()
  
  def test_display():
      a = App()
      display_test(a)
      a.destroy()
  
  def test_enable():
      a = App()
      t = Text(a)
      cascading_enable_test(a)
      a.destroy()
  
  def test_events():
      a = App()
      events_test(a)
      a.destroy()
  
  def test_cascading_properties():
      a = App()
      cascading_properties_test(a)
      a.destroy()
  
  def test_inheriting_properties():
      a = App()
      inheriting_properties_test(a)
      a.destroy()
  
  def test_full_screen():
      a = App()
      full_screen_test(a)
      a.destroy()
  
  def test_add_tk_widget():
      a = App()
      add_tk_widget_test(a)
      a.destroy()