JSTests/test262/test/built-ins/Array/prototype/some/15.4.4.17-7-c-i-18.js

// 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.some
es5id: 15.4.4.17-7-c-i-18
description: >
    Array.prototype.some - element to be retrieved is own accessor
    property without a get function on an Array
---*/

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

        var arr = [];

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

assert(arr.some(callbackfn), 'arr.some(callbackfn) !== true');