title: How to simulate a long press with Robolectric?
body: <p>I'm using Robolectric 2.3 to test an Android app. I have a listener registered on a view with <code>setOnLongClickListener</code>, and I'd like to test that code by simulating a long click. Is there a helper method to do this in Robolectric? <code>Robolectric.clickOn</code> appears to do a normal 'short' tap.</p>
  
  <p>I did see that I can access the long click listener via <code>ShadowView</code>, so I suppose I could invoke the callback manually if all else fails.</p>