The Tor Browser / file revision

 /* Any copyright is dedicated to the public domain.

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

 // Bug 776129 - If a window w calls window.open, the resultant window should be

 // remote iff w is remote.

 //

 // <iframe mozbrowser> can be default-OOP or default-in-process.  But we can

 // override this default by setting remote=true or remote=false on the iframe.

 //

 // This bug arises when we are default-in-process and a OOP iframe calls

 // window.open, or when we're default-OOP and an in-process iframe calls

 // window.open.  In either case, if the opened iframe gets the default

 // remotness, it will not match its opener's remoteness, which is bad.

 //

 // Since the name of the test determines the OOP-by-default pref, the "inproc"

 // version of this test opens an OOP frame, and the "oop" version opens an

 // in-process frame.  Enjoy.  :)

 "use strict";

 SimpleTest.waitForExplicitFinish();

 browserElementTestHelpers.setEnabledPref(true);

 browserElementTestHelpers.addPermission();

 function runTest() {

   // We're going to open a remote frame if OOP off by default.  If OOP is on by

   // default, we're going to open an in-process frame.

   var remote = !browserElementTestHelpers.getOOPByDefaultPref();

   var iframe = document.createElement('iframe');

   SpecialPowers.wrap(iframe).mozbrowser = true;

   iframe.setAttribute('remote', remote);

   // The page we load does window.open, then checks some things and reports

   // back using alert().  Finally, it calls alert('finish').

   //

   // Bug 776129 in particular manifests itself such that the popup frame loads

   // and the tests in file_browserElement_OpenMixedProcess pass, but the

   // content of the frame is invisible.  To catch this case, we take a

   // screenshot after we load the content into the popup, and ensure that it's

   // not blank.

   var popup;

   iframe.addEventListener('mozbrowseropenwindow', function(e) {

     popup = document.body.appendChild(e.detail.frameElement);

   });

   iframe.addEventListener('mozbrowsershowmodalprompt', function(e) {

     if (e.detail.message.startsWith('pass')) {

       ok(true, e.detail.message);

     }

     else if (e.detail.message.startsWith('fail')) {

       ok(false, e.detail.message);

     }

     else if (e.detail.message == 'finish') {

       // We assume here that iframe is completely blank, and spin until popup's

       // screenshot is not the same as iframe.

       iframe.getScreenshot(1000, 1000).onsuccess = function(e) {

         var fr = new FileReader();

         fr.onloadend = function() { test2(popup, fr.result); };

         fr.readAsArrayBuffer(e.target.result);

       };

     }

     else {

       ok(false, e.detail.message, "Unexpected message!");

     }

   });

   document.body.appendChild(iframe);

   iframe.src = 'file_browserElement_OpenMixedProcess.html';

 }

 function arrayBuffersEqual(a, b) {

   var x = new Int8Array(a);

   var y = new Int8Array(b);

   if (x.length != y.length) {

     return false;

   }

   for (var i = 0; i < x.length; i++) {

     if (x[i] != y[i]) {

       return false;

     }

   }

   return true;

 }

 function test2(popup, blankScreenshotArrayBuffer) {

   // Take screenshots of popup until it doesn't equal blankScreenshot (or we

   // time out).

   popup.getScreenshot(1000, 1000).onsuccess = function(e) {

     var fr = new FileReader();

     fr.onloadend = function() {

       if (!arrayBuffersEqual(blankScreenshotArrayBuffer, fr.result)) {

         ok(true, "Finally got a non-blank screenshot.");

         SimpleTest.finish();

         return;

       }

       SimpleTest.executeSoon(function() { test2(popup, blankScreenshot) });

     };

     fr.readAsArrayBuffer(e.target.result);

   };

 }

 addEventListener('testready', runTest);