public void TestDarkenImage()
{
const string outputFilePath = "../../Output/Brightness-Darken_image.jpg";
var thisImage = new NetImage();
thisImage.LoadImage("../../Resources/1024x768-white.png");
thisImage.Filename = outputFilePath;
thisImage.DarkenImage(50);
thisImage.SaveImage();
// TODO : Check RGB values
Assert.Pass("DarkenImage passed but does not verify RGB Values");
}