01.[CodedStep(@"ImageComp")]02.publicvoidComparison_CodedStep()03.{04. System.Drawing.Bitmap actualbmp = newSystem.Drawing.Bitmap(@"pink3.png");05. System.Drawing.Bitmap expectedbmp = newSystem.Drawing.Bitmap(@"pink5.png");06. ArtOfTest.Common.PixelMap expected = ArtOfTest.Common.PixelMap.FromBitmap(expectedbmp);07. ArtOfTest.Common.PixelMap actual = ArtOfTest.Common.PixelMap.FromBitmap(actualbmp);08. 09. Assert.IsTrue(expected.Compare(actual, 0.0));10.}Above is my code for the image comparison I am carrying out with the 2 attached PNGs. Both pink squares are 300 by 300 pixels. Each black square contained inside each pink square is 50 x 50 pixels. In examining the images, it is inherently obvious that they are different, the black squares are in completely separate locations. But, with a tolerance of 0, the test I have this coded step in still passes. So it brings me to my question...
How is this test passing?
What is the Compare function testing for? A summation of pixel values?
Is there a workaround to this? How can I make this test fail without modifying the images?
~ Max