added a unit test

src/main/java/com/google/code/gossip/GossipService.java

@@ -74,4 +74,14 @@ public class GossipService {
 		out.println("[" + addressString + "][" + new Date().toString() + "] " + message);*/
 		out.println("[" + new Date().toString() + "] " + message);
 	}
+
+  public GossipManager get_gossipManager() {
+    return _gossipManager;
+  }
+
+  public void set_gossipManager(GossipManager _gossipManager) {
+    this._gossipManager = _gossipManager;
+  }
+	
+	
 }

src/main/java/com/google/code/gossip/manager/PassiveGossipThread.java

@@ -36,27 +36,16 @@ abstract public class PassiveGossipThread implements Runnable {
 
 	public PassiveGossipThread(GossipManager gossipManager) {
 		_gossipManager = gossipManager;
-		
-		// Start the service on the given port number.
 		try {
-			//_server = new DatagramSocket( _gossipManager.getMyself().getPort());
-		  
 		  SocketAddress socketAddress = new InetSocketAddress(_gossipManager.getMyself().getHost(), _gossipManager.getMyself().getPort());
 		  _server = new DatagramSocket(socketAddress);
-			
-			// The server successfully started on the current port.
 			GossipService.info("Gossip service successfully initialized on port " + _gossipManager.getMyself().getPort());
 			GossipService.debug("I am " + _gossipManager.getMyself());
 		} catch (SocketException ex) {
 			System.err.println(ex);
 			_server = null;
-			// Let's communicate this to the user.
-			/*
-			GossipService.error("Error while starting the gossip service on port " + _gossipManager.getMyself().getPort() + ": " + ex.getMessage());
-			System.exit(-1);*/
 			throw new RuntimeException(ex);
 		}
-		
 		_keepRunning = new AtomicBoolean(true);
 	}