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<p>Test that MessagePort messages are delivered even if both ports are in transit (cloned).</p>
<p>Should say PASS twice.</p>
<pre id=log></pre>
<script>
function gc()
{
if (window.GCController)
return GCController.collect();
for (var i = 0; i < 10000; i++) { // force garbage collection (FF requires about 9K allocations before a collect)
var s = new String("abc");
}
}
function log(message)
{
document.getElementById("log").innerHTML += message + "<br>";
}
if (window.testRunner) {
testRunner.dumpAsText();
testRunner.waitUntilDone();
}
function test1()
{
var channel = new MessageChannel;
var channel2 = new MessageChannel;
channel.port1.postMessage("msg1");
channel2.port1.postMessage("", [channel.port1]);
channel2.port2.postMessage("", [channel.port2]);
channel2.port2.onmessage = channel2.port1.onmessage = function(evt) {
evt.ports[0].onmessage = function(event) {
if (event.data == "msg1") {
log("PASS: Received message to cloned port.");
this.postMessage("msg2");
gc();
} else if (event.data == "msg2") {
log("PASS: Received message from cloned port.");
gc();
if (window.testRunner)
testRunner.notifyDone();
} else {
log("FAIL: Received unknown message: " + event.data);
}
}
evt.ports[0] = 0;
}
channel = 0;
channel2 = 0;
gc();
}
test1();
</script>
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