dom/base/test/test_messageChannel_transferable.html

   1 <!DOCTYPE HTML>
   2 <html>
   3 <!--
   4 https://bugzilla.mozilla.org/show_bug.cgi?id=677638
   5 -->
   6 <head>
   7   <meta charset="utf-8">
   8   <title>Test for Bug 677638 - port cloning</title>
   9   <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
  10   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  11 </head>
  12 <body>
  13 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=677638">Mozilla Bug 677638</a>
  14 <div id="content"></div>
  15 <pre id="test">
  16 </pre>
  17   <script type="application/javascript">
  18
  19   function start() {
  20     var a = new MessageChannel();
  21     ok(a, "MessageChannel created");
  22
  23     window.addEventListener('message', receiveMessage, false);
  24     function receiveMessage(evt) {
  25       if (evt.data.status == 'READY') {
  26         runTest();
  27       } else {
  28         ok(false, "Unknown message");
  29       }
  30     }
  31
  32     var div = document.getElementById("content");
  33     ok(div, "Parent exists");
  34
  35     var ifr = document.createElement("iframe");
  36     ifr.addEventListener("load", iframeLoaded, false);
  37     ifr.setAttribute('src', "iframe_messageChannel_post.html");
  38     div.appendChild(ifr);
  39
  40     function iframeLoaded() {
  41       ifr.contentWindow.postMessage({ port: a.port2 }, '*', [a.port2]);
  42     }
  43
  44     a.port1.addEventListener('message', receivePortMessage, false);
  45     function receivePortMessage(evt) {
  46       is(evt.data.ab.byteLength, size, "The size is: " + size + " == " + ab.byteLength);
  47       SimpleTest.finish();
  48     }
  49
  50     // Start() is not implicity invoked when addEventListener is used.
  51     a.port1.start();
  52
  53     var size = 1024 * 1024 * 32;
  54     var ab = new ArrayBuffer(size);
  55     is(ab.byteLength, size, "The size is: " + size + " == " + ab.byteLength);
  56
  57     function runTest() {
  58       a.port1.postMessage({ab: ab, cb: ab}, [ab]);
  59       ok(ab.byteLength == 0, "PostMessage - The size is: 0 == " + ab.byteLength)
  60     }
  61   }
  62
  63   SimpleTest.waitForExplicitFinish();
  64   SpecialPowers.pushPrefEnv({"set": [["dom.messageChannel.enabled", true]]}, start);
  65   </script>
  66 </body>
  67 </html>