public void TestState()
{
StateContext ctx = new StateContext();
ctx.ChangeState(TitleState.Instance);
Assert.Equal("Title", ctx.GetState());
ctx.Do("startbutton");
Assert.Equal("Game", ctx.GetState());
ctx.Do("monster");
Assert.Equal("GameOver", ctx.GetState());
ctx.Do("startbutton");
Assert.Equal("GameOver", ctx.GetState());
ctx.Do("tick");
Assert.Equal("Title", ctx.GetState());
}
