test/built-ins/Array/prototype/lastIndexOf/15.4.4.15-2-7.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: 15.4.4.15-2-7
description: >
    Array.prototype.lastIndexOf - 'length' is own accessor property on
    an Array-like object
---*/

        var obj = { 1: true, 2: false };

        Object.defineProperty(obj, "length", {
            get: function () {
                return 2;
            },
            configurable: true
        });

assert.sameValue(Array.prototype.lastIndexOf.call(obj, true), 1, 'Array.prototype.lastIndexOf.call(obj, true)');
assert.sameValue(Array.prototype.lastIndexOf.call(obj, false), -1, 'Array.prototype.lastIndexOf.call(obj, false)');