Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2015 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 | // |
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| 14 | // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 24 | description('Tests for the descriptors of the properties implicitly defined by ES6 class syntax'); |
| 25 | |
| 26 | function descriptor(object, propertyName) { |
| 27 | return Object.getOwnPropertyDescriptor(object, propertyName); |
| 28 | } |
| 29 | |
| 30 | function enumeratedProperties(object) { |
| 31 | var properties = []; |
| 32 | for (var propertyName in object) |
| 33 | properties.push(propertyName); |
| 34 | return properties; |
| 35 | } |
| 36 | |
| 37 | Array.prototype.includes = function(element) { |
| 38 | return this.indexOf(element) !== -1; |
| 39 | }; |
| 40 | |
| 41 | shouldBeFalse('class A {}; descriptor(A, "prototype").writable'); |
| 42 | shouldBe('class A {}; var x = A.prototype; A.prototype = 3; A.prototype', 'x'); |
| 43 | shouldBeFalse('class A {}; descriptor(A, "prototype").enumerable'); |
| 44 | shouldBeTrue('class A {}; A.foo = "foo"; enumeratedProperties(A).includes("foo")'); |
| 45 | shouldBeFalse('class A {}; enumeratedProperties(A).includes("prototype")'); |
| 46 | shouldBeFalse('class A {}; descriptor(A, "prototype").configurable'); |
| 47 | shouldThrow('class A {}; Object.defineProperty(A, "prototype", {value: "foo"})', '"TypeError: Cannot redefine property: prototype"'); |
| 48 | |
| 49 | shouldBeTrue('class A { static foo() {} }; descriptor(A, "foo").writable'); |
| 50 | shouldBe('class A { static foo() {} }; A.foo = 3; A.foo', '3'); |
| 51 | shouldBeFalse('class A { static foo() {} }; descriptor(A, "foo").enumerable'); |
| 52 | shouldBeFalse('class A { static foo() {} }; enumeratedProperties(A).includes("foo")'); |
| 53 | shouldBeTrue('class A { static foo() {} }; descriptor(A, "foo").configurable'); |
| 54 | shouldBe('class A { static foo() {} }; Object.defineProperty(A, "foo", {value: "bar"}); A.foo', '"bar"'); |
| 55 | |
| 56 | shouldBe('class A { static get foo() {} }; descriptor(A, "foo").writable', 'undefined'); |
| 57 | shouldBe('class A { static get foo() { return 5; } }; A.foo = 3; A.foo', '5'); |
| 58 | shouldBeFalse('class A { static get foo() {} }; descriptor(A, "foo").enumerable'); |
| 59 | shouldBeFalse('class A { static get foo() {} }; enumeratedProperties(A).includes("foo")'); |
| 60 | shouldBeFalse('class A { static get foo() {} }; enumeratedProperties(new A).includes("foo")'); |
| 61 | shouldBeTrue('class A { static get foo() {} }; descriptor(A, "foo").configurable'); |
| 62 | shouldBe('class A { static get foo() {} }; Object.defineProperty(A, "foo", {value: "bar"}); A.foo', '"bar"'); |
| 63 | |
| 64 | shouldBeTrue('class A { foo() {} }; descriptor(A.prototype, "foo").writable'); |
| 65 | shouldBe('class A { foo() {} }; A.prototype.foo = 3; A.prototype.foo', '3'); |
| 66 | shouldBeFalse('class A { foo() {} }; descriptor(A.prototype, "foo").enumerable'); |
| 67 | shouldBeFalse('class A { foo() {} }; enumeratedProperties(A.prototype).includes("foo")'); |
| 68 | shouldBeFalse('class A { foo() {} }; enumeratedProperties(new A).includes("foo")'); |
| 69 | shouldBeTrue('class A { foo() {} }; descriptor(A.prototype, "foo").configurable'); |
| 70 | shouldBe('class A { foo() {} }; Object.defineProperty(A.prototype, "foo", {value: "bar"}); A.prototype.foo', '"bar"'); |
| 71 | |
| 72 | shouldBe('class A { get foo() {} }; descriptor(A.prototype, "foo").writable', 'undefined'); |
| 73 | shouldBe('class A { get foo() { return 5; } }; A.prototype.foo = 3; A.prototype.foo', '5'); |
| 74 | shouldBeFalse('class A { get foo() {} }; descriptor(A.prototype, "foo").enumerable'); |
| 75 | shouldBeFalse('class A { get foo() {} }; enumeratedProperties(A.prototype).includes("foo")'); |
| 76 | shouldBeFalse('class A { get foo() {} }; enumeratedProperties(new A).includes("foo")'); |
| 77 | shouldBeTrue('class A { get foo() {} }; descriptor(A.prototype, "foo").configurable'); |
| 78 | shouldBe('class A { get foo() {} }; Object.defineProperty(A.prototype, "foo", {value: "bar"}); A.prototype.foo', '"bar"'); |
| 79 | |
| 80 | shouldBeTrue('class A { }; descriptor(A.prototype, "constructor").writable'); |
| 81 | shouldBe('class A { }; A.prototype.constructor = 3; A.prototype.constructor', '3'); |
| 82 | shouldBeTrue('class A { }; x = {}; A.prototype.constructor = function () { return x; }; (new A) instanceof A'); |
| 83 | shouldBeFalse('class A { }; descriptor(A.prototype, "constructor").enumerable'); |
| 84 | shouldBeFalse('class A { }; enumeratedProperties(A.prototype).includes("constructor")'); |
| 85 | shouldBeFalse('class A { }; enumeratedProperties(new A).includes("constructor")'); |
| 86 | shouldBeTrue('class A { }; descriptor(A.prototype, "constructor").configurable'); |
| 87 | shouldBe('class A { }; Object.defineProperty(A.prototype, "constructor", {value: "bar"}); A.prototype.constructor', '"bar"'); |
| 88 | |
| 89 | var successfullyParsed = true; |