js/xpconnect/tests/mochitest/test_nukeContentWindow.html

   1 <!DOCTYPE HTML>
   2 <html>
   3 <!--
   4 https://bugzilla.mozilla.org/show_bug.cgi?id=1322273
   5 -->
   6 <head>
   7   <meta charset="utf-8">
   8   <title>Test for Bug 1322273</title>
   9   <script 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=1322273">Mozilla Bug 1322273</a>
  14
  15 <iframe id="subframe"></iframe>
  16
  17 <script type="application/javascript">
  18 "use strict";
  19
  20 function waitForWindowDestroyed(winID, callback) {
  21   let observer = {
  22     observe: function(subject, topic, data) {
  23       let id = subject.QueryInterface(SpecialPowers.Ci.nsISupportsPRUint64).data;
  24       if (id != winID) {
  25         return;
  26       }
  27       SpecialPowers.removeObserver(observer, "outer-window-nuked");
  28       SpecialPowers.executeSoon(callback);
  29     }
  30   };
  31   SpecialPowers.addObserver(observer, "outer-window-nuked");
  32 }
  33
  34 add_task(async function() {
  35   let frame = $('subframe');
  36   frame.srcdoc = "foo";
  37   await new Promise(resolve => frame.addEventListener("load", resolve, {once: true}));
  38
  39   let win = frame.contentWindow;
  40   let winID = SpecialPowers.wrap(win).docShell.outerWindowID;
  41
  42   win.eval("obj = {}");
  43   win.obj.foo = {bar: "baz"};
  44
  45   let obj = win.obj;
  46
  47   let system = SpecialPowers.Services.scriptSecurityManager.getSystemPrincipal()
  48   let sandbox = SpecialPowers.Cu.Sandbox(system);
  49
  50   sandbox.obj = obj;
  51
  52   let isWrapperDead = SpecialPowers.Cu.evalInSandbox(`(${
  53       function isWrapperDead() {
  54         return Cu.isDeadWrapper(obj);
  55       }
  56     })`,
  57     sandbox);
  58
  59   is(isWrapperDead(), false, "Sandbox wrapper for content window should not be dead");
  60   is(obj.foo.bar, "baz", "Content wrappers into and out of content window should be alive");
  61
  62   // Remove the frame, which should nuke the content window.
  63   info("Remove the content frame");
  64   frame.remove();
  65
  66   // Give the nuke wrappers task a chance to run.
  67   await new Promise(resolve => waitForWindowDestroyed(winID, resolve));
  68
  69   is(isWrapperDead(), true, "Sandbox wrapper for content window should be dead");
  70   is(obj.foo.bar, "baz", "Content wrappers into and out of content window should be alive");
  71 });
  72 </script>
  73
  74 </body>
  75 </html>