15.2.3.6-4-343.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: 15.2.3.6-4-343

description: >

    ES5 Attributes - success to update [[Writable]] attribute of data

    property ([[Writable]] is true, [[Enumerable]] is false,

    [[Configurable]] is true) to different value

---*/

var obj = {};

Object.defineProperty(obj, "prop", {

  value: 2010,

  writable: true,

  enumerable: false,

  configurable: true

});

var propertyDefineCorrect = obj.hasOwnProperty("prop");

var desc1 = Object.getOwnPropertyDescriptor(obj, "prop");

Object.defineProperty(obj, "prop", {

  writable: false

});

var desc2 = Object.getOwnPropertyDescriptor(obj, "prop");

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

assert.sameValue(desc1.writable, true, 'desc1.writable');

assert.sameValue(obj.prop, 2010, 'obj.prop');

assert.sameValue(desc2.writable, false, 'desc2.writable');

reportCompare(0, 0);