JSTests/test262/test/built-ins/Array/prototype/map/15.4.4.19-8-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.map
es5id: 15.4.4.19-8-b-7
description: >
    Array.prototype.map - properties can be added to prototype after
    current position are visited on an Array
---*/

        function callbackfn(val, idx, obj) {
            if (idx === 1 && val === 6.99) {
                return false;
            } else {
                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 testResult = arr.map(callbackfn);

assert.sameValue(testResult[0], true, 'testResult[0]');
assert.sameValue(testResult[1], false, 'testResult[1]');