public void testReleasingTableLayoutMonitorWillUpdateZooKeeper() throws Exception {
final BlockingQueue<Multimap<String, String>> usersQueue = Queues.newSynchronousQueue();
final UsersTracker tracker =
ZooKeeperUtils
.newTableUsersTracker(mZKClient, mTableURI)
.registerUpdateHandler(new QueueingUsersUpdateHandler(usersQueue));
try {
tracker.start();
Assert.assertEquals(ImmutableSetMultimap.<String, String>of(),
usersQueue.poll(1, TimeUnit.SECONDS));