183aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// Copyright 2011 the V8 project authors. All rights reserved. 283aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// Redistribution and use in source and binary forms, with or without 383aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// modification, are permitted provided that the following conditions are 483aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// met: 583aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// 683aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// * Redistributions of source code must retain the above copyright 783aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// notice, this list of conditions and the following disclaimer. 883aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// * Redistributions in binary form must reproduce the above 983aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// copyright notice, this list of conditions and the following 1083aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// disclaimer in the documentation and/or other materials provided 1183aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// with the distribution. 1283aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// * Neither the name of Google Inc. nor the names of its 1383aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// contributors may be used to endorse or promote products derived 1483aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// from this software without specific prior written permission. 1583aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// 1683aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 1783aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 1883aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 1983aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2083aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2183aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 2283aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 2383aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 2483aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 2583aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 2683aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 2783aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org 2883aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// Object.defineProperty with generic desc on existing property 2983aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org// should just update enumerable/configurable flags. 3083aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org 3183aa54905e559090bea7771b83f188762cfcf082ricow@chromium.orgvar obj = { get p() { return 42; } }; 3283aa54905e559090bea7771b83f188762cfcf082ricow@chromium.orgvar desc = Object.getOwnPropertyDescriptor(obj, 'p'); 3383aa54905e559090bea7771b83f188762cfcf082ricow@chromium.orgvar getter = desc.get; 3483aa54905e559090bea7771b83f188762cfcf082ricow@chromium.org 3583aa54905e559090bea7771b83f188762cfcf082ricow@chromium.orgObject.defineProperty(obj, 'p', {enumerable: false }); 3683aa54905e559090bea7771b83f188762cfcf082ricow@chromium.orgassertEquals(obj.p, 42); 3783aa54905e559090bea7771b83f188762cfcf082ricow@chromium.orgdesc = Object.getOwnPropertyDescriptor(obj, 'p'); 3883aa54905e559090bea7771b83f188762cfcf082ricow@chromium.orgassertFalse(desc.enumerable); 3983aa54905e559090bea7771b83f188762cfcf082ricow@chromium.orgassertTrue(desc.configurable); 4083aa54905e559090bea7771b83f188762cfcf082ricow@chromium.orgassertEquals(desc.get, getter); 4183aa54905e559090bea7771b83f188762cfcf082ricow@chromium.orgassertEquals(desc.set, undefined); 4283aa54905e559090bea7771b83f188762cfcf082ricow@chromium.orgassertFalse(desc.hasOwnProperty('value')); 4383aa54905e559090bea7771b83f188762cfcf082ricow@chromium.orgassertFalse(desc.hasOwnProperty('writable')); 44