JSTests/test262/test/built-ins/Array/prototype/some/15.4.4.17-7-b-4.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-b-4
description: >
    Array.prototype.some - properties added into own object after
    current position are visited on an Array-like object
---*/

        function callbackfn(val, idx, obj) {
            if (idx === 1 && val === 1) {
                return true;
            } else {
                return false;
            }
        }

        var arr = { length: 2 };

        Object.defineProperty(arr, "0", {
            get: function () {
                Object.defineProperty(arr, "1", {
                    get: function () {
                        return 1;
                    },
                    configurable: true
                });
                return 0;
            },
            configurable: true
        });

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