1 // Copyright 2013 the V8 project authors. All rights reserved. 2 // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. 3 // 4 // Redistribution and use in source and binary forms, with or without 5 // modification, are permitted provided that the following conditions 6 // are met: 7 // 1. Redistributions of source code must retain the above copyright 8 // notice, this list of conditions and the following disclaimer. 9 // 2. Redistributions in binary form must reproduce the above copyright 10 // notice, this list of conditions and the following disclaimer in the 11 // documentation and/or other materials provided with the distribution. 12 // 13 // THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 // DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17 // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19 // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 // ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 24 description( 25 'Test for function.prototype\'s property descriptor.' 26 ); 27 28 function test(func) 29 { 30 // test function.prototype has the correct attributes - writable, enumerable, non-configurable. 31 descriptor = Object.getOwnPropertyDescriptor(func, 'prototype'); 32 shouldBeTrue("descriptor['writable']"); 33 shouldBeFalse("descriptor['enumerable']"); 34 shouldBeFalse("descriptor['configurable']"); 35 } 36 37 // Test prototype's attributes are correct. 38 function a() {} 39 test(a); 40 41 // Test prototype's attributes are correct, if assigned without first having being accessed. 42 function b() {} 43 b.prototype = {}; 44 test(b); 45 46 // Given that prototype is non-configurable, defineProperty should not be able to assign a getter to it. 47 function c() {} 48 shouldThrow("Object.defineProperty(c, 'prototype', { get: function(){} })"); 49 test(c); 50
