public void ApplySepia()
{
var oldR = LargeBitmap.GetPixel(0, 0).R;
var oldG = LargeBitmap.GetPixel(0, 0).G;
var oldB = LargeBitmap.GetPixel(0, 0).B;
int newR = (int)(oldR * 0.393f + oldG * 0.769f + oldB * 0.189f);
int newG = (int)(oldR * 0.349f + oldG * 0.686f + oldB * 0.168f);
int newB = (int)(oldR * 0.272f + oldG * 0.543f + oldB * 0.131f);
newR = newR > 255 ? 255 : newR;
newG = newG > 255 ? 255 : newG;
newB = newB > 255 ? 255 : newB;
ImageHandler.ApplySepia(LargeBitmap);
Assert.AreEqual(newR, LargeBitmap.GetPixel(0, 0).R);
Assert.AreEqual(newG, LargeBitmap.GetPixel(0, 0).G);
Assert.AreEqual(newB, LargeBitmap.GetPixel(0, 0).B);
}