title: Tests navigator in xcode 7 says (null)
body: <p>When I try to test my iOS app the Xcode 7 test navigator shows (null) the second time I run my tests.</p>
  
  <p>The first time it looks normal: </p>
  
  <p><a href="https://i.stack.imgur.com/4e6PO.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/4e6PO.png" alt="enter image description here"></a></p>
  
  <p>However, as I run the tests again the 12 tests turn into a single test named (null) and it feels like the test cases aren't really run anymore, they just succeed every time after 1 millisecond.</p>
  
  <p><a href="https://i.stack.imgur.com/J3is4.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/J3is4.png" alt="enter image description here"></a></p>
  
  <p>I'm using Kiwi for the tests, but it feels more like something going wrong in Xcode7. I don't remember having this problem in Xcode6. The only thing that consistently solves the problem seems to be an Xcode reboot.</p>
  
  <p>Has anyone had this issue as well?</p>