test/built-ins/Array/prototype/map/15.4.4.19-8-c-i-20.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: 15.4.4.19-8-c-i-20
description: >
    Array.prototype.map - element to be retrieved is own accessor
    property without a get function that overrides an inherited
    accessor property on an Array-like object
includes: [runTestCase.js]
---*/

function testcase() {

        function callbackfn(val, idx, obj) {
            if (idx === 0) {
                return typeof val === "undefined";
            }
            return false;
        }

        var proto = {};

        var Con = function () { };
        Con.prototype = proto;

        var child = new Con();
        child.length = 2;

        Object.defineProperty(child, "0", {
            set: function () { },
            configurable: true
        });

        Object.defineProperty(proto, "0", {
            get: function () {
                return 100;
            },
            configurable: true
        });

        var testResult = Array.prototype.map.call(child, callbackfn);

        return testResult[0] === true;
    }
runTestCase(testcase);