### Question:
DelayedMessageScheduler extends MessageScheduler { @Override protected String getChannelName(String queueName) { return EndpointRegistry.get(queueName).getDelayedQueueChannelName(); }    }### Answer:
@Test public void getChannelName() { assertEquals( slowQueueDetail.getDelayedQueueChannelName(), messageScheduler.getChannelName(slowQueue)); }