title: organizing unit tests in groups in visual studio test explorer
body: <p>I have a solution with about 70 projects in visual studio. The solution also contains several unit test projects. Visual studio displays my tests in the test explorer as following:</p>
  
  <pre>
  Run | Run ... |
  > Passed tests
  v Failed tests
  * test1
  * test2
  > Not run tests
  </pre>
  
  <p>all tests are thrown together, and the only way i can think of organizing this screen is using a naming convention for the tests. </p>
  
  <p>I would like to avoid that. Is there any way where i can organize the tests into a group or node? </p>