| // 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("Test to ensure correct behaviour of prototype caching with dictionary prototypes"); |
| |
| function protoTest(o) { |
| return o.protoProp; |
| } |
| |
| var proto = {protoProp: "PASS", propToRemove: "foo"}; |
| var o = { __proto__: proto }; |
| |
| delete proto.propToRemove; |
| |
| // Prototype lookup caching will attempt to convert proto back to an ordinary structure |
| protoTest(o); |
| protoTest(o); |
| protoTest(o); |
| shouldBe("protoTest(o)", "'PASS'"); |
| delete proto.protoProp; |
| proto.fakeProtoProp = "FAIL"; |
| shouldBeUndefined("protoTest(o)"); |
| |
| function protoTest2(o) { |
| return o.b; |
| } |
| |
| var proto = {a:1, b:"meh", c:2}; |
| var o = { __proto__: proto }; |
| |
| delete proto.b; |
| proto.d = 3; |
| protoTest2(o); |
| protoTest2(o); |
| protoTest2(o); |
| var protoKeys = []; |
| for (var i in proto) |
| protoKeys.push(proto[i]); |
| |
| shouldBe("protoKeys", "[1,2,3]"); |
| |
| function protoTest3(o) { |
| return o.b; |
| } |
| |
| var proto = {a:1, b:"meh", c:2}; |
| var o = { __proto__: proto }; |
| |
| delete proto.b; |
| protoTest2(o); |
| protoTest2(o); |
| protoTest2(o); |
| proto.d = 3; |
| var protoKeys = []; |
| for (var i in proto) |
| protoKeys.push(proto[i]); |
| |
| shouldBe("protoKeys", "[1,2,3]"); |
| |
| function testFunction(o) { |
| return o.test; |
| } |
| |
| var proto = { test: true }; |
| var subclass1 = { __proto__: proto }; |
| var subclass2 = { __proto__: proto }; |
| for (var i = 0; i < 500; i++) |
| subclass2["a"+i]="a"+i; |
| |
| testFunction(subclass1); |
| shouldBeTrue("testFunction(subclass1)"); |
| shouldBeTrue("testFunction(subclass2)"); |
| proto.test = false |
| subclass2.test = true; |
| shouldBeTrue("testFunction(subclass2)"); |