title: How to check/test Snackbar dismisses on Android Espresso
body: <p>I wanted to test if at all possible Espresso knows how to check <code>Snackbar</code> dismissal? I am currently deleting a tag and shows a <code>Snackbar</code> giving the user a chance to undo. I delete the tag after a <code>Snackbar.LEGNTH_LONG</code> and I wanted to test if  my tag is still on the list after <code>Snackbar.LEGNTH_LONG</code>.</p>
  
  <p>I haven't figured this out yet. Is this possible on Espresso?</p>