assertEquals(queue.size(), 0);
assertEquals(queue.isEmpty(), true);
assertEquals(queue.drain(100, new LinkedList<Message>()), 0);
for (int i = 0; i < 100; ++i) {
queue.offer(new Message("routingkey" + i, ("value" + i).getBytes()));
}
assertEquals(queue.size(), 100);
assertEquals(queue.isEmpty(), false);