http://blogs.msdn.com/b/visualstudioalm/archive/2012/12/05/implementing-traits-in-custom-visual-studio-test-adapters.aspxTerje Sandstrom has written two excellent blogs on using Traits in Visual Studio Test Explorer. How to manage unit tests in Visual Studio 2012 Update 1 : Part 1–Using Traits in the Unit Test Explorer Part 2–Using Traits with different test frameworksen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.msdn.com/b/visualstudioalm/archive/2012/12/05/implementing-traits-in-custom-visual-studio-test-adapters.aspx#10394907Mon, 18 Feb 2013 16:21:40 GMT91d46819-8472-40ad-a661-2c78acb4018c:10394907Mathew Aniyan MSFT'<p>@Akram,</p> <p>In the ITestExecutor.RunTests method, you can provide additional error information in the Test Result class. </p> <p>In my sample (<a rel="nofollow" target="_new" href="http://blogs.msdn.com/b/visualstudioalm/archive/2012/07/31/writing-a-visual-studio-2012-unit-test-adapter.aspx">blogs.msdn.com/.../writing-a-visual-studio-2012-unit-test-adapter.aspx</a>), I have filled TestResult.Outcome. You can include additional information such as ErrorMessage &amp; ErrorStackTrace.</p> <div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=10394907" width="1" height="1">http://blogs.msdn.com/b/visualstudioalm/archive/2012/12/05/implementing-traits-in-custom-visual-studio-test-adapters.aspx#10393415Wed, 13 Feb 2013 16:07:41 GMT91d46819-8472-40ad-a661-2c78acb4018c:10393415Akram Alhinnawi<p>Mathew, your job is amazing. I&#39;ve been following your work since I started implementing XML Test Adapter. So now the most important question is, if you added Traits successfully, how can we add the ErrorMessage attribute is the test fails? can we do something about it?</p> <div style="clear:both;"></div><img src="http://blogs.msdn.com/aggbug.aspx?PostID=10393415" width="1" height="1">