title: Using VSTest to run unit test cases instead of MSTest
body: <p>I have an x64 platform C# solution(VS2012) on a TFS2010 server. I have attached a unit test project (also x64)  to this solution and created a build definition. When I queue the build, it succeeds but the unit test cases will not be executed. This is because MSTest is a 32 bit application. So, I decided to customize the default build process template (DefaultTemplate.xaml) to invoke VSTest(VSTest.console.exe) instead of MSTest. This is quite complex and I am unable to add a build activity to the toolbox for VSTest.</p>
  
  <p>Has anyone done this kind of customization? I have also considered other approaches like configuring .runsettings file. Do we have a  VSTest adapter interface that can be added in the .runsettings file ?</p>