The Tor Browser / file revision

 // Copyright 2012 Mozilla Corporation. All rights reserved.

 // This code is governed by the BSD license found in the LICENSE file.

 /**

  * @description Tests that the behavior of a List is not affected by adversarial

  *     changes to Array.prototype.

  * @author Norbert Lindenberg

  */

 $INCLUDE("testIntl.js");

 taintArray();

 testWithIntlConstructors(function (Constructor) {

     var defaultLocale = new Constructor().resolvedOptions().locale;

     var canonicalized = Constructor.supportedLocalesOf([defaultLocale, defaultLocale]);

     if (canonicalized.length > 1) {

         $ERROR("Canonicalization didn't remove duplicate language tags from locale list.");

     }

 });