title: How to exclude tests using "/Category" from mstest on Jenkins
body: <p>Before you point me out the other questions please read on... </p>
  
  <p>I am running a mstest argument from Jenkins (not sure if this at all relevant) and want to exclude tests that do not belong in a particular category.
  Including tests in a category works a treat using the <code>/category:CI</code> but when i use it to exclude test using <code>/category:!CI</code> it doesnot work. It just says <code>no tests to execute</code>. I am %110 sure that there are tests in my container that are not in this category.
  I am using mstest test for VS2010.</p>
  
  <pre><code>mstest.exe /testcontainer:%%i /runconfig:%TestSettingFile% /category:"!CI" /resultsfile:Results.trx
  </code></pre>
  
  <p>Any idea what I might be doing wrong</p>
  
  <p><b>EDIT</B>
  I have found that this command doesn't work when running it from Jenkins but it works fine through cmd on the local box - any current bugs with Jenkins in regards to this?</p>