Content - 5e2b9054afa3f986935ddb257f4328fd3c9860ef - 4cfae33/workers/postMessage_ports_readonly_array.htm

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Tip revision: 2594ec0bcf0af2bc546e78dde66aa382bf039a80 authored by Aryeh Gregor on 18 April 2016, 17:32:41 UTC
Update for whatwg/dom@537e579f

Tip revision: 2594ec0

postMessage_ports_readonly_array.htm

<!DOCTYPE html>
<title> postMessage(): read-only ports array </title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id=log></div>
<script>
async_test(function(t) {
  var channel = new MessageChannel();
  var targetPort = channel.port2;
  targetPort.start();
  targetPort.addEventListener("message", t.step_func_done(function(e) {
    var channel3 = new MessageChannel();
    e.ports.push(channel3.port1);
    e.ports.push(channel3.port1);
    assert_equals(e.ports.length, 1, "ports is a read only array with length == 1.");
  }), true);
  var channel2 = new MessageChannel();
  channel.port1.postMessage("ports", [channel2.port1]);
});
</script>

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