The Tor Browser: dom/browser-element/mochitest/browserElement

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* Any copyright is dedicated to the public domain.

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

     4 // Test that the onmozbrowsertitlechange event works.

     5 "use strict";

     7 SimpleTest.waitForExplicitFinish();

     8 browserElementTestHelpers.setEnabledPref(true);

     9 browserElementTestHelpers.addPermission();

    11 function runTest() {

    12   var iframe1 = document.createElement('iframe');

    13   SpecialPowers.wrap(iframe1).mozbrowser = true;

    14   document.body.appendChild(iframe1);

    16   // iframe2 is a red herring; we modify its title but don't listen for

    17   // titlechanges; we want to make sure that its titlechange events aren't

    18   // picked up by the listener on iframe1.

    19   var iframe2 = document.createElement('iframe');

    20   SpecialPowers.wrap(iframe2).mozbrowser = true;

    21   document.body.appendChild(iframe2);

    23   // iframe3 is another red herring.  It's not a mozbrowser, so we shouldn't

    24   // get any titlechange events on it.

    25   var iframe3 = document.createElement('iframe');

    26   document.body.appendChild(iframe3);

    28   var numTitleChanges = 0;

    30   iframe1.addEventListener('mozbrowsertitlechange', function(e) {

    31     // Ignore empty titles; these come from about:blank.

    32     if (e.detail == '')

    33       return;

    35     numTitleChanges++;

    37     if (numTitleChanges == 1) {

    38       is(e.detail, 'Title');

    39       SpecialPowers.getBrowserFrameMessageManager(iframe1)

    40                    .loadFrameScript("data:,content.document.title='New title';",

    41                                     /* allowDelayedLoad = */ false);

    42       SpecialPowers.getBrowserFrameMessageManager(iframe2)

    43                    .loadFrameScript("data:,content.document.title='BAD TITLE 2';",

    44                                     /* allowDelayedLoad = */ false);

    45     }

    46     else if (numTitleChanges == 2) {

    47       is(e.detail, 'New title');

    48       iframe1.src = 'data:text/html,<html><head><title>Title 3</title></head><body></body></html>';

    49     }

    50     else if (numTitleChanges == 3) {

    51       is(e.detail, 'Title 3');

    52       SimpleTest.finish();

    53     }

    54     else {

    55       ok(false, 'Too many titlechange events.');

    56     }

    57   });

    59   iframe3.addEventListener('mozbrowsertitlechange', function(e) {

    60     ok(false, 'Should not get a titlechange event for iframe3.');

    61   });

    63   iframe1.src = 'data:text/html,<html><head><title>Title</title></head><body></body></html>';

    64   iframe2.src = 'data:text/html,<html><head><title>BAD TITLE</title></head><body></body></html>';

    65   iframe3.src = 'data:text/html,<html><head><title>SHOULD NOT GET EVENT</title></head><body></body></html>';

    66 }

    68 addEventListener('testready', runTest);

The Tor Browser / file revision