test/built-ins/Array/prototype/reduce/15.4.4.21-9-c-i-18.js


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// Copyright (c) 2012 Ecma International.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
es5id: 15.4.4.21-9-c-i-18
description: >
    Array.prototype.reduce - element to be retrieved is own accessor
    property without a get function on an Array
includes: [runTestCase.js]
---*/

function testcase() {

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

        var arr = [0, , 2];

        Object.defineProperty(arr, "1", {
            set: function () { },
            configurable: true
        });

        arr.reduce(callbackfn, initialValue);
        return testResult;
         
    }
runTestCase(testcase);