title: Firefox OS: Hot to test your hosted app with firefox OS desktop client and marionett
body: <p>I want to run UI tests on my firefox os application. I would like to use marionett for this, so I downloaded the B2G desktop client. It works fine, but I can not figure out, how could I add my hosted app to the desktop client to be able to test it with marionett.</p>
  
  <p>Could you help me?
  Thanks.</p>