title: How to test and debug Cocoa App on different version of OSx using same Mac?
body: <p>I made an Application using my Mac with Yosemite. On Completion of that I archived it and Then distribute to few friends, one of them have Mavericks. I faced some issues on that Mavericks System. With the occurrence of this thing, following queries raised in my mind,</p>
  
  <ul>
  <li>Can I check my application on different OSX version, without running it actually on different MACs?</li>
  <li>Can I also debug my application with different OSX Versions, using a system having single Osx?</li>
  </ul>
  
  <p>In Nutshell, I want to know, is it Possible to test Cocoa application with multiple versions? something similar like iOS development where I can run app on different iOS versions.</p>