1b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// Copyright 2013 the V8 project authors. All rights reserved. 2b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// Redistribution and use in source and binary forms, with or without 3b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// modification, are permitted provided that the following conditions are 4b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// met: 5b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// 6b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// * Redistributions of source code must retain the above copyright 7b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// notice, this list of conditions and the following disclaimer. 8b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// * Redistributions in binary form must reproduce the above 9b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// copyright notice, this list of conditions and the following 10b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// disclaimer in the documentation and/or other materials provided 11b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// with the distribution. 12b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// * Neither the name of Google Inc. nor the names of its 13b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// contributors may be used to endorse or promote products derived 14b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// from this software without specific prior written permission. 15b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// 16b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org 28b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org// Test that the length property of a function is read-only in strict mode. 29b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org 30b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org"use strict"; 31b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org 32b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.orgfunction foo(a, b, c) { 33b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org return b; 34b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org} 35b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.org 36b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.orgvar desc = Object.getOwnPropertyDescriptor(foo, 'length'); 37b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.orgassertEquals(3, desc.value); 38b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.orgassertFalse(desc.writable); 39b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.orgassertFalse(desc.enumerable); 40b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.orgassertFalse(desc.configurable); 41b752d4061aaeb7d6a6ec368607871789d54b0207dslomov@chromium.orgassertThrows(function() { foo.length = 2; }, TypeError); 42