public void PushScreenTest()
{
GameScreen screen = new GameScreen();
manager.PushScreen(screen);
Assert.AreEqual(screen, manager.Screens.Peek());
}
public void RestartTest()
{
ScreenManager manager = new ScreenManager();
GameScreen game = new GameScreen();
MenuScreen menu = new MenuScreen();
menu.Manager = manager;
manager.Screens.Push(game);
manager.Screens.Push(menu);
menu.Restart();
Assert.AreNotEqual(game, manager.Screens.Peek());
}