public void testSubmitsAreSequential() throws Exception {
SynchronousQueueService queueService = new SynchronousQueueService(m_bundleContext);
queueService.submit(new StringCallable("one"), m_callback, null);
queueService.submit(new StringCallable("two"), m_callback, null);
InOrder order = inOrder(m_callback);
order.verify(m_callback).success(infos.capture(), eq("one"));
order.verify(m_callback).success(infos.capture(), eq("two"));