public void AddOverlayImage_SourceDrawnCompletelyOverTarget_TargetShouldBeTheSameAsSource()
{
// Setup
var rect2By2 = new RectangleF(0f, 0f, 2f, 2f);
const PixelFormat imageFormat = PixelFormat.Format32bppArgb;
using (Bitmap image = Resources.TestImage2x2.Clone(rect2By2, imageFormat))
using (Bitmap target = Resources.Black2x2.Clone(rect2By2, imageFormat))
{
// Call
using (Bitmap result = target.AddOverlayImage(image, 0, 0, 2, 2))
{
// Assert
TestHelper.AssertImagesAreEqual(image, result);
}
}
}
public void AddOverlayImage_SourceDrawnPartiallyOverTarget_TargetPartiallyChanged()
{
// Setup
var rect2By2 = new RectangleF(0f, 0f, 2f, 2f);
const PixelFormat imageFormat = PixelFormat.Format32bppArgb;
using (Bitmap target = Resources.TestImage2x2.Clone(rect2By2, imageFormat))
using (Bitmap image = Resources.Black2x2.Clone(rect2By2, imageFormat))
using (Bitmap expectedImage = Resources.TestImageWithBlack2x2.Clone(rect2By2, imageFormat))
{
// Call
using (Bitmap result = target.AddOverlayImage(image, 1, 1, 2, 2))
{
// Assert
TestHelper.AssertImagesAreEqual(expectedImage, result);
}
// 'target' should be unchanged! A new image should have been created.
TestHelper.AssertImagesAreEqual(Resources.TestImage2x2, target);
}
}