public void ShiftHueWraps0()
{
var hsl = new Color.HSL(90, 0.5, 0.5);
Assert.AreEqual(new Color.HSL(330, 0.5, 0.5), hsl.ShiftHue(-120));
}
public void ShiftHueWraps360()
{
var hsl = new Color.HSL(90, 0.5, 0.5);
Assert.AreEqual(new Color.HSL(0, 0.5, 0.5), hsl.ShiftHue(270));
}
public void ShiftHueAddsToHue()
{
var hsl = new Color.HSL(90, 0.5, 0.5);
Assert.AreEqual(new Color.HSL(120, 0.5, 0.5), hsl.ShiftHue(30));
}