### Question:
RqueueConfig { public String getDelayedQueueChannelName(String queueName) { if (dbVersion == 1) { return "rqueue-channel::" + queueName; } return prefix + getDelayedQueueChannelSuffix() + getTaggedName(queueName); }  String getQueuesKey(); String getQueueName(String queueName); String getDelayedQueueName(String queueName); String getDelayedQueueChannelName(String queueName); String getProcessingQueueName(String queueName); String getProcessingQueueChannelName(String queueName); String getLockKey(String key); String getQueueStatisticsKey(String name); String getQueueConfigKey(String name);  }### Answer:
@Test public void getDelayedQueueChannelName() { assertEquals("rqueue-channel::test", rqueueConfigVersion1.getDelayedQueueChannelName("test")); assertEquals("__rq::d-channel::test", rqueueConfigVersion2.getDelayedQueueChannelName("test")); assertEquals( "__rq::d-channel::{test}", rqueueConfigVersion2ClusterMode.getDelayedQueueChannelName("test")); }