test_nukeContentWindow.html

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<!DOCTYPE HTML>

<html>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=1322273

-->

<head>

  <meta charset="utf-8">

  <title>Test for Bug 1322273</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>

</head>

<body>

<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1322273">Mozilla Bug 1322273</a>

<iframe id="subframe"></iframe>

<script type="application/javascript">

"use strict";

function waitForWindowDestroyed(winID, callback) {

  let observer = {

    observe: function(subject, topic, data) {

      let id = subject.QueryInterface(SpecialPowers.Ci.nsISupportsPRUint64).data;

      if (id != winID) {

        return;

      SpecialPowers.removeObserver(observer, "outer-window-nuked");

      SpecialPowers.executeSoon(callback);

};

  SpecialPowers.addObserver(observer, "outer-window-nuked");

add_task(async function() {

  let frame = $('subframe');

  frame.srcdoc = "foo";

  await new Promise(resolve => frame.addEventListener("load", resolve, {once: true}));

  let win = frame.contentWindow;

  let winID = SpecialPowers.wrap(win).docShell.outerWindowID;

  win.eval("obj = {}");

  win.obj.foo = {bar: "baz"};

  let obj = win.obj;

  let system = SpecialPowers.Services.scriptSecurityManager.getSystemPrincipal()

  let sandbox = SpecialPowers.Cu.Sandbox(system);

  sandbox.obj = obj;

  let isWrapperDead = SpecialPowers.Cu.evalInSandbox(`(${

      function isWrapperDead() {

        return Cu.isDeadWrapper(obj);

    })`,

    sandbox);

  is(isWrapperDead(), false, "Sandbox wrapper for content window should not be dead");

  is(obj.foo.bar, "baz", "Content wrappers into and out of content window should be alive");

  // Remove the frame, which should nuke the content window.

  info("Remove the content frame");

  frame.remove();

  // Give the nuke wrappers task a chance to run.

  await new Promise(resolve => waitForWindowDestroyed(winID, resolve));

  is(isWrapperDead(), true, "Sandbox wrapper for content window should be dead");

  is(obj.foo.bar, "baz", "Content wrappers into and out of content window should be alive");

});

</script>

</body>

</html>