test/built-ins/Array/prototype/filter/15.4.4.20-3-19.js


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// Copyright (c) 2012 Ecma International.  All rights reserved.
// Ecma International makes this code available under the terms and conditions set
// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the
// "Use Terms").   Any redistribution of this code must retain the above
// copyright and this notice and otherwise comply with the Use Terms.

/*---
es5id: 15.4.4.20-3-19
description: >
    Array.prototype.filter - value of 'length' is an Object which has
    an own toString method.
includes: [runTestCase.js]
---*/

function testcase() {

        function callbackfn(val, idx, obj) {
            return true;
        }

        var obj = {
            1: 11,
            2: 9,
            length: {
                toString: function () {
                    return '2';
                }
            }
        };

        var newArr = Array.prototype.filter.call(obj, callbackfn);

        return newArr.length === 1 && newArr[0] === 11;
    }
runTestCase(testcase);