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 24description( 25"This tests that for/in statements behave correctly when cached." 26); 27 28function forIn1() { 29 var result = []; 30 var o = { x: 1 }; 31 for (var p in o) 32 result.push(p); 33 return result; 34} 35forIn1(); 36Object.prototype.y = 2; 37shouldBe("forIn1()", "['x', 'y']"); 38delete Object.prototype.y; 39 40function forIn2() { 41 var result = []; 42 var o = { x: 1, __proto__: null }; 43 for (var p in o) 44 result.push(p); 45 return result; 46} 47forIn2(); 48shouldBe("forIn2()", "['x']"); 49 50function forIn3(proto) { 51 var result = []; 52 var o = { x: 1, __proto__: proto }; 53 for (var p in o) 54 result.push(p); 55 return result; 56} 57forIn3({ __proto__: { y1: 2 } }); 58forIn3({ __proto__: { y1: 2 } }); 59shouldBe("forIn3({ __proto__: { y1: 2 } })", "['x', 'y1']"); 60 61forIn3({ y2 : 2, __proto__: null }); 62forIn3({ y2 : 2, __proto__: null }); 63shouldBe("forIn3({ y2 : 2, __proto__: null })", "['x', 'y2']"); 64 65forIn3({ __proto__: { __proto__: { y3 : 2 } } }); 66forIn3({ __proto__: { __proto__: { y3 : 2 } } }); 67shouldBe("forIn3({ __proto__: { __proto__: { y3 : 2 } } })", "['x', 'y3']"); 68 69function forIn4(o) { 70 var result = []; 71 for (var p in o) 72 result.push(p); 73 return result; 74} 75var objectWithArrayAsProto = {}; 76objectWithArrayAsProto.__proto__ = []; 77shouldBe("forIn4(objectWithArrayAsProto)", "[]"); 78objectWithArrayAsProto.__proto__[0]=1; 79shouldBe("forIn4(objectWithArrayAsProto)", "['0']"); 80 81function forIn5(o) { 82 for (var i in o) 83 return [i, o[i]]; 84} 85 86shouldBe("forIn5({get foo() { return 'called getter'} })", "['foo', 'called getter']"); 87shouldBe("forIn5({set foo(v) { } })", "['foo', undefined]"); 88shouldBe("forIn5({get foo() { return 'called getter'}, set foo(v) { }})", "['foo', 'called getter']"); 89 90function cacheClearing() { 91 for(var j=0; j < 10; j++){ 92 var o = {a:1,b:2,c:3,d:4,e:5} 93 try {for (i in o) { delete o.a; o = null; throw "" };}finally{continue} 94 } 95} 96 97cacheClearing() 98