public void TestZeroLuminosity ()
{
var color = new Color (0.1, 0.2, 0.3);
color = color.AddLuminosity (-1);
Assert.AreEqual (0, color.Luminosity);
Assert.AreEqual (0, color.R);
Assert.AreEqual (0, color.G);
Assert.AreEqual (0, color.B);
}
public void TestAddLuminosity ()
{
var color = new Color (0.2);
var brighter = color.AddLuminosity (0.2);
Assert.That (brighter.Luminosity, Is.EqualTo (color.Luminosity + 0.2).Within (0.001));
color = Color.Default;
Assert.Throws<InvalidOperationException> (() => color.AddLuminosity (0.2));
}