test262/test/suite/ch15/15.4/15.4.4/15.4.4.15/15.4.4.15-8-11.js

/// Copyright (c) 2012 Ecma International.  All rights reserved. 
/// Ecma International makes this code available under the terms and conditions set
/// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
/// "Use Terms").   Any redistribution of this code must retain the above 
/// copyright and this notice and otherwise comply with the Use Terms.
/**
 * @path ch15/15.4/15.4.4/15.4.4.15/15.4.4.15-8-11.js
 * @description Array.prototype.lastIndexOf - the length of iteration isn't changed by adding elements to the array during iteration
 */


function testcase() {

        var arr = [20];

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

        return arr.lastIndexOf(1) === -1;
    }
runTestCase(testcase);