test/built-ins/Array/prototype/lastIndexOf/15.4.4.15-1-13.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.

/*---
es5id: 15.4.4.15-1-13
description: Array.prototype.lastIndexOf applied to the JSON object
includes: [runTestCase.js]
---*/

function testcase() {

        var targetObj = {};
        try {
            JSON[3] = targetObj;
            JSON.length = 5;
            return 3 === Array.prototype.lastIndexOf.call(JSON, targetObj);
        } finally {
            delete JSON[3];
            delete JSON.length;
        }
    }
runTestCase(testcase);