test/built-ins/Array/prototype/forEach/15.4.4.18-7-c-i-28.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.

/*---
esid: sec-array.prototype.foreach
es5id: 15.4.4.18-7-c-i-28
description: >
    Array.prototype.forEach - element changed by getter on previous
    iterations is observed on an Array
---*/

        var preIterVisible = false;
        var arr = [];
        var testResult = false;

        function callbackfn(val, idx, obj) {
            if (idx === 1) {
                testResult = (val === 9);
            }
        }

        Object.defineProperty(arr, "0", {
            get: function () {
                preIterVisible = true;
                return 11;
            },
            configurable: true
        });

        Object.defineProperty(arr, "1", {
            get: function () {
                if (preIterVisible) {
                    return 9;
                } else {
                    return 13;
                }
            },
            configurable: true
        });

        arr.forEach(callbackfn);

assert(testResult, 'testResult !== true');