Question

I love to Extend my Assert.AreEqual to many different classes, the known one is the CollectionAssert of course, but I can think of some more such as: ImageAssert, XmlAssert etc..

Did you Create your own Assert classes? and what kind of new would you like to create?

Answer 1

I’ve just added an implementation to ImageAssert as I wrote above (in my question) I would be glad to hear more of that kind of samples

[TestMethod] public void CompareImagesSize() {  Image expected = Bitmap.FromFile(@'C:\ShaniData\Projects2008\TddSamples\Output\ExpectedImage.png');  Image actual = Bitmap.FromFile(@'C:\ShaniData\Projects2008\TddSamples\Output\RhinoDiagram.png');   Bitmap expectedBitmap = new Bitmap(expected);  Bitmap actualBitmap = new Bitmap(actual);   ImageAssert.HasTheSameSize(expectedBitmap, actualBitmap); }  [TestMethod] public void CompareTwoSameImagesButWithDifferenExtension() {  Image expected = Bitmap.FromFile(@'C:\ShaniData\Projects2008\TddSamples\Output\Image2.png');  Image actual = Bitmap.FromFile(@'C:\ShaniData\Projects2008\TddSamples\Output\Image1.jpg');   Bitmap expectedBitmap = new Bitmap(expected);  Bitmap actualBitmap = new Bitmap(actual);   ImageAssert.AreEqual(expectedBitmap, actualBitmap); }  public class ImageAssert {     //public static void MoreMethods(Bitmap expected, Bitmap actual)     //{     //    //Compare image extensions     //    //Compare Thumbnail...     //}      public static void HasTheSameSize(Bitmap expected, Bitmap actual)     {         if ((expected.Height != actual.Height)             || (expected.Width != actual.Width))             HandleFail('ImageAssert.HasTheSameSize', String.Empty);     }      public static void AreEqual(Bitmap expected, Bitmap actual)     {         for (int i = 0; i < expected.Width; i++)         {             for (int j = 0; j < expected.Height; j++)             {                 Color expectedBit = expected.GetPixel(i, j);                 Color actualBit = actual.GetPixel(i, j);                 if (!expectedBit.Equals(actualBit))                 {                     HandleFail('ImageAssert.AreEqual', String.Empty, i, j);                     return;                 }             }         }     }      internal static void HandleFail(string assertionName, string message, params object[] parameters)     {         throw new AssertFailedException(String.Format(assertionName));     } }