michael@0: function postMsg(message)
michael@0: {
michael@0:   var l = SpecialPowers.wrap(parent.window.location);
michael@0:   parent.postMessage(message, l.protocol + "//" + l.host);
michael@0: }
michael@0: 
michael@0: window.addEventListener("message", onMessageReceived, false);
michael@0: 
michael@0: function onMessageReceived(event)
michael@0: {
michael@0:   if (event.data == "step") {
michael@0:     var performed = false;
michael@0:     try {
michael@0:       performed = doStep();
michael@0:     }
michael@0:     catch (ex) {
michael@0:       postMsg("FAILURE: exception threw at "+ location +":\n" + ex);
michael@0:       finishTest();
michael@0:     }
michael@0: 
michael@0:     if (performed)
michael@0:       postMsg("perf");
michael@0: 
michael@0:     return;
michael@0:   }
michael@0: 
michael@0:   if (parent)
michael@0:     postMsg(event.data);
michael@0: }
michael@0: 
michael@0: function ok(a, message)
michael@0: {
michael@0:   if (!a)
michael@0:     postMsg("FAILURE: " + message);
michael@0:   else
michael@0:     postMsg(message);
michael@0: }
michael@0: 
michael@0: function is(a, b, message)
michael@0: {
michael@0:   if (a != b)
michael@0:     postMsg("FAILURE: " + message + ", expected "+b+" got "+a);
michael@0:   else
michael@0:     postMsg(message + ", expected "+b+" got "+a);
michael@0: }
michael@0: 
michael@0: function todo(a, b, message)
michael@0: {
michael@0:   postMsg("TODO: " + message + ", expected "+b+" got "+a);
michael@0: }
michael@0: 
michael@0: function finishTest()
michael@0: {
michael@0:   postMsg("done");
michael@0:   return false;
michael@0: }