added PrioTest, need to figure out how to test PRIO !

tests/junit/org/jgroups/tests/PrioTest.java

@@ -0,0 +1,70 @@
+package org.jgroups.tests;
+
+import org.jgroups.*;
+import org.jgroups.conf.ClassConfigurator;
+import org.jgroups.protocols.PRIO;
+import org.jgroups.protocols.PrioHeader;
+import org.jgroups.protocols.pbcast.NAKACK;
+import org.jgroups.stack.ProtocolStack;
+import org.jgroups.util.Util;
+import org.testng.annotations.AfterTest;
+import org.testng.annotations.BeforeTest;
+import org.testng.annotations.Test;
+
+import java.util.LinkedList;
+import java.util.List;
+
+/**
+ * @author Bela Ban
+ */
+@Test(groups=Global.STACK_DEPENDENT,sequential=false)
+public class PrioTest extends ChannelTestBase {
+    protected JChannel c1, c2;
+    protected PrioReceiver r1, r2;
+    protected static final short PRIO_ID=ClassConfigurator.getProtocolId(PRIO.class);
+
+    @BeforeTest void init() throws Exception {
+        c1=createChannel(true, 2, "A");
+        c1.getProtocolStack().insertProtocol(new PRIO(), ProtocolStack.ABOVE, NAKACK.class);
+        c2=createChannel(c1, "B");
+        c1.connect("PrioTest");
+        r1=new PrioReceiver();
+        c1.setReceiver(r1);
+        c2.connect("PrioTest");
+        r2=new PrioReceiver();
+        c2.setReceiver(r2);
+        assert c2.getView().size() == 2;
+    }
+
+    @AfterTest void destroy() {
+        Util.close(c2, c1);
+    } 
+
+
+    public void testPrioritizedMessages() throws ChannelNotConnectedException, ChannelClosedException {
+        byte[] prios={120,110,100,90,80,70,60,50,40,30,20,10,9,8,7,6,5,4,3,2,1};
+        for(byte prio: prios) {
+            Message msg=new Message(null, null, new Integer(prio));
+            PrioHeader hdr=new PrioHeader(prio);
+            msg.putHeader(PRIO_ID, hdr);
+            c1.send(msg);
+        }
+
+        // Mike: how can we test this ? It seems this is not deterministic... which is fine, I guess, but hard to test !
+    }
+
+
+    protected static class PrioReceiver extends ReceiverAdapter {
+        protected final List<Integer> msgs=new LinkedList<Integer>();
+
+        public List<Integer> getMsgs() {
+            return msgs;
+        }
+
+        public void receive(Message msg) {
+            msgs.add((Integer)msg.getObject());
+            PrioHeader hdr=(PrioHeader)msg.getHeader(PRIO_ID);
+            System.out.println("<< " + msg.getSrc() + ": " + msg.getObject() + " (prio=" + hdr.getPriority() + ")");
+        }
+    }
+}