text: // Copyright 2011-2012 Norbert Lindenberg. All rights reserved.
  // Copyright 2012 Mozilla Corporation. All rights reserved.
  // This code is governed by the BSD license found in the LICENSE file.
  
  /**
   * @description Tests that Intl.DateTimeFormat can be subclassed.
   * @author Norbert Lindenberg
   */
  
  $INCLUDE("testIntl.js");
  
  // get a date-time format and have it format an array of dates for comparison with the subclass
  var locales = ["tlh", "id", "en"];
  var a = [new Date(0), Date.now(), new Date(Date.parse("1989-11-09T17:57:00Z"))];
  var referenceDateTimeFormat = new Intl.DateTimeFormat(locales);
  var referenceFormatted = a.map(referenceDateTimeFormat.format);
  
  function MyDateTimeFormat(locales, options) {
      Intl.DateTimeFormat.call(this, locales, options);
      // could initialize MyDateTimeFormat properties
  }
  
  MyDateTimeFormat.prototype = Object.create(Intl.DateTimeFormat.prototype);
  MyDateTimeFormat.prototype.constructor = MyDateTimeFormat;
  // could add methods to MyDateTimeFormat.prototype
  
  var format = new MyDateTimeFormat(locales);
  var actual = a.map(format.format);
  testArraysAreSame(referenceFormatted, actual);
  
  