gecko-dev/dom/html/test/test_allowMedia.html

<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=759964
-->
<head>
  <meta charset="utf-8">
  <title>Test for Bug 759964</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
  <script type="application/javascript">

  /** Test for Bug 759964 **/

SimpleTest.waitForExplicitFinish();
addLoadEvent(runNextTest);

var SJS = "http://mochi.test:8888/tests/dom/html/test/allowMedia.sjs";
var TEST_PAGE = "data:text/html,<audio src='" + SJS + "?audio'></audio>";

function runNextTest() {
  var test = tests.shift();
  if (!test) {
    SimpleTest.finish();
    return;
  }
  test();
}

var tests = [

  // Set allowMedia = false, load a page with <audio>, verify the <audio>
  // doesn't load its source.
  function basic() {
    var iframe = insertIframe();
    SpecialPowers.allowMedia(iframe.contentWindow, false);
    loadIframe(iframe, TEST_PAGE, function () {
      verifyPass();
      iframe.remove();
      runNextTest();
    });
  },

  // Set allowMedia = false on parent docshell, load a page with <audio> in a
  // child iframe, verify the <audio> doesn't load its source.
  function inherit() {
    SpecialPowers.allowMedia(window, false);

    var iframe = insertIframe();
    loadIframe(iframe, TEST_PAGE, function () {
      verifyPass();
      iframe.remove();
      SpecialPowers.allowMedia(window, true);
      runNextTest();
    });
  },

  // In a display:none iframe, set allowMedia = false, load a page with <audio>,
  // verify the <audio> doesn't load its source.
  function displayNone() {
    var iframe = insertIframe();
    iframe.style.display = "none";
    SpecialPowers.allowMedia(iframe.contentWindow, false);
    loadIframe(iframe, TEST_PAGE, function () {
      verifyPass();
      iframe.remove();
      runNextTest();
    });
  },
];

function insertIframe() {
  var iframe = document.createElement("iframe");
  document.body.appendChild(iframe);
  return iframe;
}

function loadIframe(iframe, url, onDone) {
  iframe.setAttribute("src", url);
  iframe.addEventListener("load", onDone);
}

function verifyPass() {
  var xhr = new XMLHttpRequest();
  xhr.open("GET", SJS, false);
  xhr.send();
  is(xhr.responseText, "PASS", "<audio> source should not have been loaded.");
}

  </script>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=759964">Mozilla Bug 759964</a>
<p id="display">
</p>
</body>
</html>