title: Espresso: receive broadcast event
body: <p>I've been writing some tests with Espresso to test a fragment.</p>
  
  <p>My fragment has a broadcast receiver, and will update its views upon receiving broadcast events.</p>
  
  <p>But I can't find a way to send a broadcast event that my tested fragment can receive.</p>
  
  <p>Anyone having solution, or a better architecture to suggest?</p>
  
  <p>I'm using <code>'com.android.support.test.espresso:espresso-core:2.2.2'</code></p>