public void ValidateDecorator_Concepts()
{
var whisky = new Whisky();
var icedWhisky = new IcedWhisky(whisky);
Assert.Equal("Whisky", whisky.GetDescription());
Assert.Equal("Whisky, 2 Ice cubes", icedWhisky.GetDescription());
Assert.Equal(new Currency(5m).Value, whisky.Cost().Value);
Assert.Equal(new Currency(5.25m).Value, icedWhisky.Cost().Value);
}
