def METHOD_NAME(self):
    scene = Scene()
    director.run(scene)
    new_scene = Scene()
    director.on_push(new_scene)
    # pyglet mockup 1 don't tickle on_draw, we call
    # directly so the push / pop operation completes
    director.on_draw()
    scene.parent = not_None_value
    director.on_pop()
    # pyglet mockup 1 don't tickle on_draw, we call
    # directly so the push / pop operation completes
    director.on_draw()
    assert scene.parent is None