public void Convert_XYZ_to_xyY(double xyzX, double xyzY, double xyzZ, double x, double y, double Y)
{
// arrange
var input = new XYZColor(xyzX, xyzY, xyzZ);
var converter = new ColourfulConverter();
// act
xyYColor output = converter.ToxyY(input);
// assert
Assert.That(output.x, Is.EqualTo(x).Using(DoubleComparer));
Assert.That(output.y, Is.EqualTo(y).Using(DoubleComparer));
Assert.That(output.Luminance, Is.EqualTo(Y).Using(DoubleComparer));
}
