1 files changed, 47 insertions, 0 deletions
diff --git a/tests/roundTrip.ur b/tests/roundTrip.ur
new file mode 100644
index 0000000..0ee3f8f
--- /dev/null
+++ b/tests/roundTrip.ur
@@ -0,0 +1,47 @@
+table channels : { Client : client, Channel : channel (string * int * float) }
+  PRIMARY KEY Client
+
+table dearlyDeparted : { Client : option client, When : time }
+
+task clientLeaves = fn cli : client =>
+                       dml (INSERT INTO dearlyDeparted (Client, When) VALUES ({[Some cli]}, CURRENT_TIMESTAMP));
+                       debug "Our favorite client has LEFT!"
+
+fun writeBack v =
+    me <- self;
+    r <- oneRow (SELECT channels.Channel FROM channels WHERE channels.Client = {[me]});
+    send r.Channels.Channel v
+
+fun main' () =
+    me <- self;
+    ch <- channel;
+    dml (INSERT INTO channels (Client, Channel) VALUES ({[me]}, {[ch]}));
+    
+    buf <- Buffer.create;
+
+    let
+        fun receiverA () =
+            v <- recv ch;
+            Buffer.write buf ("A:(" ^ v.1 ^ ", " ^ show v.2 ^ ", " ^ show v.3 ^ ")");
+            receiverA ()
+
+        fun receiverB () =
+            v <- recv ch;
+            Buffer.write buf ("B:(" ^ v.1 ^ ", " ^ show v.2 ^ ", " ^ show v.3 ^ ")");
+            error <xml>Bail out!</xml>;
+            receiverB ()
+
+        fun sender s n f =
+            sleep 2000;
+            rpc (writeBack (s, n, f));
+            sender (s ^ "!") (n + 1) (f + 1.23)
+    in
+        return <xml><body onload={onDisconnect (alert "Server booted me");
+                                  onConnectFail (alert "Connection failed");
+                                  onServerError (fn s => alert ("Server error: " ^ s));
+                                  spawn (receiverA ()); spawn (receiverB ()); sender "" 0 0.0}>
+          <dyn signal={Buffer.render buf}/>
+        </body></xml>
+    end
+
+fun main () = return <xml><body><form><submit action={main'}/></form></body></xml>