title: Import XCTest in to existing project
body: <p>I added a new target as a Cocoa Touch Unit Testing Bundle, named the directory "MyAppTests", and the actual framework is not active-- it is highlighted red</p>
  
  <p><img src="https://i.stack.imgur.com/rqQjF.png" alt="enter image description here"></p>
  
  <p>When I add the framework by the 'link binary with libraries' in the 'build phases' tab technique, a new Framework is added, instead of updating the one that was created with adding the target.</p>
  
  <p><img src="https://i.stack.imgur.com/UDBxb.png" alt="enter image description here"></p>
  
  <p>When I go to run the code, I then run in to all sorts of troubles, ranging from linking errors to other frameworks not being recognized. </p>
  
  <p>How can I activate the XCTest.framework that was generated when I added target? Please help, thank you!</p>