michael@0: // Copyright 2011-2012 Norbert Lindenberg. All rights reserved.
michael@0: // Copyright 2012 Mozilla Corporation. All rights reserved.
michael@0: // This code is governed by the BSD license found in the LICENSE file.
michael@0: 
michael@0: /**
michael@0:  * @description Tests that Intl.NumberFormat can be subclassed.
michael@0:  * @author Norbert Lindenberg
michael@0:  */
michael@0: 
michael@0: $INCLUDE("testIntl.js");
michael@0: 
michael@0: // get a number format and have it format an array of numbers for comparison with the subclass
michael@0: var locales = ["tlh", "id", "en"];
michael@0: var a = [0, 1, -1, -123456.789, -Infinity, NaN];
michael@0: var referenceNumberFormat = new Intl.NumberFormat(locales);
michael@0: var referenceFormatted = a.map(referenceNumberFormat.format);
michael@0: 
michael@0: function MyNumberFormat(locales, options) {
michael@0:     Intl.NumberFormat.call(this, locales, options);
michael@0:     // could initialize MyNumberFormat properties
michael@0: }
michael@0: 
michael@0: MyNumberFormat.prototype = Object.create(Intl.NumberFormat.prototype);
michael@0: MyNumberFormat.prototype.constructor = MyNumberFormat;
michael@0: // could add methods to MyNumberFormat.prototype
michael@0: 
michael@0: var format = new MyNumberFormat(locales);
michael@0: var actual = a.map(format.format);
michael@0: testArraysAreSame(referenceFormatted, actual);
michael@0: