@Test public void setQueuePosition() {

  queueManager.setQueuePosition(queue.get(3).queueItemId());
  assertThat(queueManager.currentTrack(), is(queue.get(3)));
  TestSubscriber<Pair<List<Track>, Integer>> test = queueManager.queue().take(1).test();
  test.awaitTerminalEvent();
  int actualPosition = test.values().get(0).second;
  assertThat(actualPosition, is(3));
}