test/suite/ch15/15.4/15.4.4/15.4.4.21/15.4.4.21-8-b-iii-1-16.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 ch15/15.4/15.4.4/15.4.4.21/15.4.4.21-8-b-iii-1-16.js
 * @description Array.prototype.reduce - element to be retrieved is inherited accessor property on an Array
 */


function testcase() {

        var testResult = false;
        function callbackfn(prevVal, curVal, idx, obj) {
            if (idx === 1) {
                testResult = (prevVal === 0);
            }
        }

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

            var arr = [, 1, 2];

            arr.reduce(callbackfn);
            return testResult;
        } finally {
            delete Array.prototype[0];
        }
    }
runTestCase(testcase);