JSTests/test262/test/built-ins/Object/prototype/valueOf/S15.2.4.4_A10.js

// Copyright 2009 the Sputnik authors.  All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
info: The Object.prototype.valueOf.length property has the attribute ReadOnly
es5id: 15.2.4.4_A10
description: >
    Checking if varying the Object.prototype.valueOf.length property
    fails
includes: [propertyHelper.js]
---*/

//CHECK#1
if (!(Object.prototype.valueOf.hasOwnProperty('length'))) {
  $ERROR('#1: the Object.prototype.valueOf has length property.');
}

var obj = Object.prototype.valueOf.length;

verifyNotWritable(Object.prototype.valueOf, "length", null, function() {
  return "shifted";
});

//CHECK#2
if (Object.prototype.valueOf.length !== obj) {
  $ERROR('#2: the Object.prototype.valueOf length property has the attributes ReadOnly.');
}