Made message ids unique.

src/queue.rs

@@ -131,7 +131,7 @@ impl Queue {
     fn listen(&mut self) {
         loop {
             let mut msg = self.rx.recv().unwrap();
-            msg.id = Uuid::max();
+            msg.id = Uuid::new_v4();
             let senders = self.registry.read().unwrap();
             for sender in senders.iter() {
                 sender.send(msg.reply(MsgType::ClientMessage)).unwrap();
@@ -169,4 +169,17 @@ mod queues {
             _ => unreachable!("should have been a client message"),
         }
     }
+
+    #[test]
+    fn new_client_messages_are_unique() {
+        let (tx, rx) = start_queue();
+        let msg = Message::new();
+        let mut ids: Vec<Uuid> = Vec::new();
+        for _ in 0..10 {
+            tx.send(msg.reply(MsgType::NewClientMessage)).unwrap();
+            let result = rx.recv().unwrap();
+            assert!(!ids.contains(&result.id.clone()), "{} is a duplicate", &result.id);
+            ids.push(result.id);
+        }
+    }
 }