JSTests/test262/test/built-ins/Array/prototype/filter/15.4.4.20-9-b-7.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: 15.4.4.20-9-b-7
description: >
    Array.prototype.filter - properties can be added to prototype
    after current position are visited on an Array
---*/

        function callbackfn(val, idx, obj) {
            return true;
        }
        var arr = [0, , 2];

            Object.defineProperty(arr, "0", {
                get: function () {
                    Object.defineProperty(Array.prototype, "1", {
                        get: function () {
                            return 6.99;
                        },
                        configurable: true
                    });
                    return 0;
                },
                configurable: true
            });

            var newArr = arr.filter(callbackfn);

assert.sameValue(newArr.length, 3, 'newArr.length');
assert.sameValue(newArr[1], 6.99, 'newArr[1]');