@Test
public void testRemove() throws IOException {

  final LiveUpdateSession session = mock(LiveUpdateSession.class);
  final LiveUpdateService liveUpdateService = new LiveUpdateService();
  liveUpdateService.add(session);
  liveUpdateService.remove(session);
  liveUpdateService.notifyChange(randomUUID().toString());
  verify(session, new AtMost(0)).sendMessage(anyString());
}