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 "This tests that for/in statements behave correctly when cached." 26 ); 27 28 function forIn1() { 29 var result = []; 30 var o = { x: 1 }; 31 for (var p in o) 32 result.push(p); 33 return result; 34 } 35 forIn1(); 36 Object.prototype.y = 2; 37 shouldBe("forIn1()", "['x', 'y']"); 38 delete Object.prototype.y; 39 40 function 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 } 47 forIn2(); 48 shouldBe("forIn2()", "['x']"); 49 50 function 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 } 57 forIn3({ __proto__: { y1: 2 } }); 58 forIn3({ __proto__: { y1: 2 } }); 59 shouldBe("forIn3({ __proto__: { y1: 2 } })", "['x', 'y1']"); 60 61 forIn3({ y2 : 2, __proto__: null }); 62 forIn3({ y2 : 2, __proto__: null }); 63 shouldBe("forIn3({ y2 : 2, __proto__: null })", "['x', 'y2']"); 64 65 forIn3({ __proto__: { __proto__: { y3 : 2 } } }); 66 forIn3({ __proto__: { __proto__: { y3 : 2 } } }); 67 shouldBe("forIn3({ __proto__: { __proto__: { y3 : 2 } } })", "['x', 'y3']"); 68 69 function forIn4(o) { 70 var result = []; 71 for (var p in o) 72 result.push(p); 73 return result; 74 } 75 var objectWithArrayAsProto = {}; 76 objectWithArrayAsProto.__proto__ = []; 77 shouldBe("forIn4(objectWithArrayAsProto)", "[]"); 78 objectWithArrayAsProto.__proto__[0]=1; 79 shouldBe("forIn4(objectWithArrayAsProto)", "['0']"); 80 81 function forIn5(o) { 82 for (var i in o) 83 return [i, o[i]]; 84 } 85 86 shouldBe("forIn5({get foo() { return 'called getter'} })", "['foo', 'called getter']"); 87 shouldBe("forIn5({set foo() { } })", "['foo', undefined]"); 88 shouldBe("forIn5({get foo() { return 'called getter'}, set foo() { }})", "['foo', 'called getter']"); 89 90 function 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 97 cacheClearing() 98
