test_messageChannel.js

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/* Any copyright is dedicated to the Public Domain.

 * http://creativecommons.org/publicdomain/zero/1.0/ */

add_test(function test_messageChannel() {

  do_test_pending();

  let chromeWorker = new ChromeWorker(

    "resource://test/chromeWorker_messageChannel.js"

);

  let { port1, port2 } = new MessageChannel();

  port2.onmessage = pongEvt => {

    Assert.equal(pongEvt.data, "pong");

    let { port1: newPort1, port2: newPort2 } = new MessageChannel();

    newPort2.onmessage = goodbyeEvt => {

      Assert.equal(goodbyeEvt.data, "goodbye");

      do_test_finished();

      run_next_test();

};

    pongEvt.ports[0].postMessage("hello", [newPort1]);

};

  chromeWorker.postMessage("ping", [port1]);

});