JSTests/test262/test/built-ins/Array/prototype/filter/15.4.4.20-2-1.js

// Copyright (c) 2012 Ecma International.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-array.prototype.filter
es5id: 15.4.4.20-2-1
description: >
    Array.prototype.filter applied to Array-like object, 'length' is
    own data property
---*/

        function callbackfn(val, idx, obj) {
            return obj.length === 2;
        }

        var obj = {
            0: 12,
            1: 11,
            2: 9,
            length: 2
        };

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

assert.sameValue(newArr.length, 2, 'newArr.length');