HTML screenshot reporter for Mstest C# Selenium

It's far from perfect (as you would have to reference it per test class and the file doesn't really get attached) but this is what I did.

1. Created a base class for all tests to handle global cleanup logic
2. Added a public TestContext property
3. Implemented [TestCleanup] method
4. Compared test result and saved screenshot
5. Used the AddResultFile to add the file path to the test report

Test class

[TestClass]public class FailingTest : TestsBase{    [TestMethod]    public void Failing()    {        throw new Exception("Fail");    }}

Base class

[TestClass]public abstract class TestsBase{    public TestContext TestContext { get; set; }    [TestCleanup]    public void SaveScreenshotOnFailure()    {        if (TestContext.CurrentTestOutcome == UnitTestOutcome.Passed)            return;        var filename = Path.GetRandomFileName() + ".png";        using (var screenshot = ScreenCapture.CaptureDesktop())            screenshot.Save(filename, ImageFormat.Png);        TestContext.AddResultFile(filename);    }}

Screenshot class

public class ScreenCapture{    public static Image CaptureDesktop()    {        // Determine the size of the "virtual screen", which includes all monitors.        var screenLeft = SystemInformation.VirtualScreen.Left;        var screenTop = SystemInformation.VirtualScreen.Top;        var screenWidth = SystemInformation.VirtualScreen.Width;        var screenHeight = SystemInformation.VirtualScreen.Height;        // Create a bitmap of the appropriate size to receive the screenshot.        var screenshot = new Bitmap(screenWidth, screenHeight);        // Draw the screenshot into our bitmap.        using (Graphics g = Graphics.FromImage(screenshot))            g.CopyFromScreen(screenLeft, screenTop, 0, 0, screenshot.Size);        return screenshot;    }}

Drawbacks are that you might not want to inherit a single base class for all tests and that the actual file doesn't seem to be attached in the report, only the path. If you're using this in a CI tool archiving it should be simple enough though.

Also this screen capture class (got it from here) is very simplistic and has a dependency on the Windows.Forms dll, I used it because it was simple to get the entire multi screen desktop shot. Here's another example of how to do it i.e. per window.