JSTests/test262/test/built-ins/Array/prototype/indexOf/15.4.4.14-2-6.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: 15.4.4.14-2-6
description: Array.prototype.indexOf - 'length' is an inherited data property
---*/

        var proto = { length: 2 };

        var Con = function () {};
        Con.prototype = proto;

        var childOne = new Con();
        childOne[1] = true;
        var childTwo = new Con();
        childTwo[2] = true;

assert.sameValue(Array.prototype.indexOf.call(childOne, true), 1, 'Array.prototype.indexOf.call(childOne, true)');
assert.sameValue(Array.prototype.indexOf.call(childTwo, true), -1, 'Array.prototype.indexOf.call(childTwo, true)');