test/suite/ch15/15.4/15.4.4/15.4.4.22/15.4.4.22-8-b-iii-1-12.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.
/**
 * @path ch15/15.4/15.4.4/15.4.4.22/15.4.4.22-8-b-iii-1-12.js
 * @description  Array.prototype.reduceRight - element to be retrieved is own accessor property that overrides an inherited data property on an Array
 */


function testcase() {

        var testResult = false;
        function callbackfn(prevVal, curVal, idx, obj) {
            if (idx === 1) {
                testResult = (prevVal === "20");
            }
        }

        try {
            Array.prototype[2] = 2;
            var arr = [0, 1];

            Object.defineProperty(arr, "2", {
                get: function () {
                    return "20";
                },
                configurable: true
            });

            arr.reduceRight(callbackfn);
            return testResult;

        } finally {
            delete Array.prototype[2];
        }
    }
runTestCase(testcase);