Added a handy processingDelay option to the MessageIdList so that a test case and simulate a slow consumer

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@560294 13f79535-47bb-0310-9956-ffa450edef68

activemq-core/src/test/java/org/apache/activemq/util/MessageIdList.java

@@ -51,6 +51,7 @@ public class MessageIdList extends Assert implements MessageListener {
     private boolean verbose;
     private MessageListener parent;
     private long maximumDuration = 15000L;
+    private long processingDelay=0;
     
 	private CountDownLatch countDownLatch;
 
@@ -119,6 +120,12 @@ public class MessageIdList extends Assert implements MessageListener {
         if (parent != null) {
             parent.onMessage(message);
         }
+        if( processingDelay > 0 ) {
+        	try {
+				Thread.sleep(processingDelay);
+			} catch (InterruptedException e) {
+			}
+        }
     }
 
     public int getMessageCount() {
@@ -241,4 +248,24 @@ public class MessageIdList extends Assert implements MessageListener {
 		this.countDownLatch = countDownLatch;
 	}
 
+	/**
+	 * Gets the amount of time the message listener will spend sleeping to
+	 * simulate a processing delay.
+	 * 
+	 * @return
+	 */
+	public long getProcessingDelay() {
+		return processingDelay;
+	}
+
+	/**
+	 * Sets the amount of time the message listener will spend sleeping to
+	 * simulate a processing delay.
+	 * 
+	 * @param processingDelay
+	 */
+	public void setProcessingDelay(long processingDelay) {
+		this.processingDelay = processingDelay;
+	}
+
 }