| // Copyright 2013 the V8 project authors. All rights reserved. |
| // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved. |
| // |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions |
| // are met: |
| // 1. Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // 2. Redistributions in binary form must reproduce the above copyright |
| // notice, this list of conditions and the following disclaimer in the |
| // documentation and/or other materials provided with the distribution. |
| // |
| // THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY |
| // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| // DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY |
| // DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| // ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| description( |
| "This tests that for/in statements behave correctly when cached." |
| ); |
| |
| function forIn1() { |
| var result = []; |
| var o = { x: 1 }; |
| for (var p in o) |
| result.push(p); |
| return result; |
| } |
| forIn1(); |
| Object.prototype.y = 2; |
| shouldBe("forIn1()", "['x', 'y']"); |
| delete Object.prototype.y; |
| |
| function forIn2() { |
| var result = []; |
| var o = { x: 1, __proto__: null }; |
| for (var p in o) |
| result.push(p); |
| return result; |
| } |
| forIn2(); |
| shouldBe("forIn2()", "['x']"); |
| |
| function forIn3(proto) { |
| var result = []; |
| var o = { x: 1, __proto__: proto }; |
| for (var p in o) |
| result.push(p); |
| return result; |
| } |
| forIn3({ __proto__: { y1: 2 } }); |
| forIn3({ __proto__: { y1: 2 } }); |
| shouldBe("forIn3({ __proto__: { y1: 2 } })", "['x', 'y1']"); |
| |
| forIn3({ y2 : 2, __proto__: null }); |
| forIn3({ y2 : 2, __proto__: null }); |
| shouldBe("forIn3({ y2 : 2, __proto__: null })", "['x', 'y2']"); |
| |
| forIn3({ __proto__: { __proto__: { y3 : 2 } } }); |
| forIn3({ __proto__: { __proto__: { y3 : 2 } } }); |
| shouldBe("forIn3({ __proto__: { __proto__: { y3 : 2 } } })", "['x', 'y3']"); |
| |
| function forIn4(o) { |
| var result = []; |
| for (var p in o) |
| result.push(p); |
| return result; |
| } |
| var objectWithArrayAsProto = {}; |
| objectWithArrayAsProto.__proto__ = []; |
| shouldBe("forIn4(objectWithArrayAsProto)", "[]"); |
| objectWithArrayAsProto.__proto__[0]=1; |
| shouldBe("forIn4(objectWithArrayAsProto)", "['0']"); |
| |
| function forIn5(o) { |
| for (var i in o) |
| return [i, o[i]]; |
| } |
| |
| shouldBe("forIn5({get foo() { return 'called getter'} })", "['foo', 'called getter']"); |
| shouldBe("forIn5({set foo() { } })", "['foo', undefined]"); |
| shouldBe("forIn5({get foo() { return 'called getter'}, set foo() { }})", "['foo', 'called getter']"); |
| |
| function cacheClearing() { |
| for(var j=0; j < 10; j++){ |
| var o = {a:1,b:2,c:3,d:4,e:5} |
| try {for (i in o) { delete o.a; o = null; throw "" };}finally{continue} |
| } |
| } |
| |
| cacheClearing() |