| // Copyright 2015 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('Tests for the descriptors of the properties implicitly defined by ES6 class syntax'); |
| |
| function descriptor(object, propertyName) { |
| return Object.getOwnPropertyDescriptor(object, propertyName); |
| } |
| |
| function enumeratedProperties(object) { |
| var properties = []; |
| for (var propertyName in object) |
| properties.push(propertyName); |
| return properties; |
| } |
| |
| Array.prototype.includes = function(element) { |
| return this.indexOf(element) !== -1; |
| }; |
| |
| shouldBeFalse('class A {}; descriptor(A, "prototype").writable'); |
| shouldBe('class A {}; var x = A.prototype; A.prototype = 3; A.prototype', 'x'); |
| shouldBeFalse('class A {}; descriptor(A, "prototype").enumerable'); |
| shouldBeTrue('class A {}; A.foo = "foo"; enumeratedProperties(A).includes("foo")'); |
| shouldBeFalse('class A {}; enumeratedProperties(A).includes("prototype")'); |
| shouldBeFalse('class A {}; descriptor(A, "prototype").configurable'); |
| shouldThrow('class A {}; Object.defineProperty(A, "prototype", {value: "foo"})', '"TypeError: Cannot redefine property: prototype"'); |
| |
| shouldBeTrue('class A { static foo() {} }; descriptor(A, "foo").writable'); |
| shouldBe('class A { static foo() {} }; A.foo = 3; A.foo', '3'); |
| shouldBeFalse('class A { static foo() {} }; descriptor(A, "foo").enumerable'); |
| shouldBeFalse('class A { static foo() {} }; enumeratedProperties(A).includes("foo")'); |
| shouldBeTrue('class A { static foo() {} }; descriptor(A, "foo").configurable'); |
| shouldBe('class A { static foo() {} }; Object.defineProperty(A, "foo", {value: "bar"}); A.foo', '"bar"'); |
| |
| shouldBe('class A { static get foo() {} }; descriptor(A, "foo").writable', 'undefined'); |
| shouldBe('class A { static get foo() { return 5; } }; A.foo = 3; A.foo', '5'); |
| shouldBeFalse('class A { static get foo() {} }; descriptor(A, "foo").enumerable'); |
| shouldBeFalse('class A { static get foo() {} }; enumeratedProperties(A).includes("foo")'); |
| shouldBeFalse('class A { static get foo() {} }; enumeratedProperties(new A).includes("foo")'); |
| shouldBeTrue('class A { static get foo() {} }; descriptor(A, "foo").configurable'); |
| shouldBe('class A { static get foo() {} }; Object.defineProperty(A, "foo", {value: "bar"}); A.foo', '"bar"'); |
| |
| shouldBeTrue('class A { foo() {} }; descriptor(A.prototype, "foo").writable'); |
| shouldBe('class A { foo() {} }; A.prototype.foo = 3; A.prototype.foo', '3'); |
| shouldBeFalse('class A { foo() {} }; descriptor(A.prototype, "foo").enumerable'); |
| shouldBeFalse('class A { foo() {} }; enumeratedProperties(A.prototype).includes("foo")'); |
| shouldBeFalse('class A { foo() {} }; enumeratedProperties(new A).includes("foo")'); |
| shouldBeTrue('class A { foo() {} }; descriptor(A.prototype, "foo").configurable'); |
| shouldBe('class A { foo() {} }; Object.defineProperty(A.prototype, "foo", {value: "bar"}); A.prototype.foo', '"bar"'); |
| |
| shouldBe('class A { get foo() {} }; descriptor(A.prototype, "foo").writable', 'undefined'); |
| shouldBe('class A { get foo() { return 5; } }; A.prototype.foo = 3; A.prototype.foo', '5'); |
| shouldBeFalse('class A { get foo() {} }; descriptor(A.prototype, "foo").enumerable'); |
| shouldBeFalse('class A { get foo() {} }; enumeratedProperties(A.prototype).includes("foo")'); |
| shouldBeFalse('class A { get foo() {} }; enumeratedProperties(new A).includes("foo")'); |
| shouldBeTrue('class A { get foo() {} }; descriptor(A.prototype, "foo").configurable'); |
| shouldBe('class A { get foo() {} }; Object.defineProperty(A.prototype, "foo", {value: "bar"}); A.prototype.foo', '"bar"'); |
| |
| shouldBeTrue('class A { }; descriptor(A.prototype, "constructor").writable'); |
| shouldBe('class A { }; A.prototype.constructor = 3; A.prototype.constructor', '3'); |
| shouldBeTrue('class A { }; x = {}; A.prototype.constructor = function () { return x; }; (new A) instanceof A'); |
| shouldBeFalse('class A { }; descriptor(A.prototype, "constructor").enumerable'); |
| shouldBeFalse('class A { }; enumeratedProperties(A.prototype).includes("constructor")'); |
| shouldBeFalse('class A { }; enumeratedProperties(new A).includes("constructor")'); |
| shouldBeTrue('class A { }; descriptor(A.prototype, "constructor").configurable'); |
| shouldBe('class A { }; Object.defineProperty(A.prototype, "constructor", {value: "bar"}); A.prototype.constructor', '"bar"'); |
| |
| var successfullyParsed = true; |