JSTests/test262/test/built-ins/Object/isFrozen/15.2.3.12-2-a-12.js

// Copyright (c) 2012 Ecma International.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
es5id: 15.2.3.12-2-a-12
description: Object.isFrozen - 'O' is a String object
---*/

var obj = new String("abc");

obj.len = 100;

Object.preventExtensions(obj);

assert.sameValue(Object.isFrozen(obj), false, 'Object.isFrozen(obj)');