15.2.3.10-3-24.js - mozsearch

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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: 15.2.3.10-3-24

description: >

    Object.preventExtensions - [[Extensible]]: false on a prototype

    doesn't prevent adding properties to an instance that inherits

    from that prototype

---*/

var proto = {};

var preCheck = Object.isExtensible(proto);

Object.preventExtensions(proto);

var ConstructFun = function() {};

ConstructFun.prototype = proto;

var child = new ConstructFun();

child.prop = 10;

assert(preCheck, 'preCheck !== true');

assert(child.hasOwnProperty("prop"), 'child.hasOwnProperty("prop") !== true');

reportCompare(0, 0);