### Question:
ReQueueConfig extends AbstractConfig { public boolean validate() { boolean valid = true; valid = validate("exchange", exchange, valid); valid = validate("queue", queue, valid); if (StringUtils.isEmpty(routingKey)) { log.error("Invalid RoutingKey : RoutingKey must be provided for requeue configuration"); valid = false; } if (autoRequeueEnabled && StringUtils.isEmpty(cron)) { log.error("Invalid Cron : Cron must be provided for auto requeue configuration"); valid = false; } if (valid) { log.info("Requeue configuration validated successfully : '{}'", this); } return valid; }  boolean validate();  }### Answer:
@Test public void validateWhenAutoConfigurationDisabledTest() { reQueueConfig.setAutoRequeueEnabled(false); assertTrue(reQueueConfig.validate()); }
@Test public void validateWhenAutoConfigurationEnabledTest() { reQueueConfig.setAutoRequeueEnabled(true); reQueueConfig.setCron("* * * * *"); assertTrue(reQueueConfig.validate()); }
@Test public void invalidWhenExchangeIsNullTest() { reQueueConfig.setExchange(null); Assert.assertFalse(reQueueConfig.validate()); }
@Test public void invalidWhenExchangeIsInvalidTest() { exchangeConfig.setName(null); reQueueConfig.setExchange(exchangeConfig); Assert.assertFalse(reQueueConfig.validate()); }
@Test public void invalidWhenQueueIsNullTest() { reQueueConfig.setQueue(null); Assert.assertFalse(reQueueConfig.validate()); }
@Test public void invalidWhenQueueIsInvalidTest() { queueConfig.setName(null); reQueueConfig.setQueue(queueConfig); Assert.assertFalse(reQueueConfig.validate()); }
@Test public void invalidWhenRoutingKeyIsNullTest() { reQueueConfig.setRoutingKey(null); Assert.assertFalse(reQueueConfig.validate()); }
@Test public void invalidWhenAutoDeleteEnabledAndCronIsNullTest() { reQueueConfig.setAutoRequeueEnabled(true); reQueueConfig.setCron(null); Assert.assertFalse(reQueueConfig.validate()); }
@Test public void validWhenAutoDeleteDisabledAndCronIsNullTest() { reQueueConfig.setAutoRequeueEnabled(false); reQueueConfig.setCron(null); assertTrue(reQueueConfig.validate()); }