test/built-ins/Array/prototype/lastIndexOf/15.4.4.15-8-a-7.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.lastindexof
es5id: 15.4.4.15-8-a-7
description: >
    Array.prototype.lastIndexOf -  properties added into own object
    after current position are visited on an Array-like object
---*/

        var arr = { length: 8 };

        Object.defineProperty(arr, "4", {
            get: function () {
                Object.defineProperty(arr, "1", {
                    get: function () {
                        return 1;
                    },
                    configurable: true
                });
                return 0;
            },
            configurable: true
        });

assert.sameValue(Array.prototype.lastIndexOf.call(arr, 1), 1, 'Array.prototype.lastIndexOf.call(arr, 1)');