JSTests/test262/test/built-ins/Array/prototype/indexOf/15.4.4.14-9-a-1.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.indexof
es5id: 15.4.4.14-9-a-1
description: >
    Array.prototype.indexOf - added properties in step 2 are visible
    here
---*/

        var arr = { };

        Object.defineProperty(arr, "length", {
            get: function () {
                arr[2] = "length";
                return 3;
            },
            configurable: true
        });

assert.sameValue(Array.prototype.indexOf.call(arr, "length"), 2, 'Array.prototype.indexOf.call(arr, "length")');