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 // 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) {

     // this test should work equally for both matching algorithms

     ["lookup", "best fit"].forEach(function (matcher) {

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

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

             {localeMatcher: matcher});

         if (canonicalized.length > 1) {

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

         }

     });

     return true;

 });