Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2016 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 5 | // Flags: --allow-natives-syntax |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 6 | |
| 7 | |
| 8 | var symbol = %CreatePrivateSymbol("private"); |
| 9 | |
| 10 | |
| 11 | // Private symbols must never be listed. |
| 12 | |
| 13 | var object = {}; |
| 14 | object[symbol] = 42; |
| 15 | for (var key of Object.keys(object)) assertUnreachable(); |
| 16 | for (var key of Object.getOwnPropertySymbols(object)) assertUnreachable(); |
| 17 | for (var key of Object.getOwnPropertyNames(object)) assertUnreachable(); |
| 18 | for (var key of Reflect.ownKeys(object)) assertUnreachable(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 19 | for (var key in object) assertUnreachable(); |
| 20 | |
| 21 | var object2 = {__proto__: object}; |
| 22 | for (var key of Object.keys(object2)) assertUnreachable(); |
| 23 | for (var key of Object.getOwnPropertySymbols(object2)) assertUnreachable(); |
| 24 | for (var key of Object.getOwnPropertyNames(object2)) assertUnreachable(); |
| 25 | for (var key of Reflect.ownKeys(object2)) assertUnreachable(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 26 | for (var key in object2) assertUnreachable(); |
| 27 | |
| 28 | |
| 29 | // Private symbols must never leak to proxy traps. |
| 30 | |
| 31 | var proxy = new Proxy({}, new Proxy({}, {get() {return () => {throw 666}}})); |
| 32 | var object = {__proto__: proxy}; |
| 33 | |
| 34 | // [[Set]] |
| 35 | assertEquals(42, proxy[symbol] = 42); |
| 36 | assertThrows(function() { "use strict"; proxy[symbol] = 42 }, TypeError); |
| 37 | assertEquals(false, Reflect.set(proxy, symbol, 42)); |
| 38 | assertEquals(42, object[symbol] = 42); |
| 39 | assertEquals(43, (function() {"use strict"; return object[symbol] = 43})()); |
| 40 | assertEquals(true, Reflect.set(object, symbol, 44)); |
| 41 | |
| 42 | // [[DefineOwnProperty]] |
| 43 | assertEquals(false, Reflect.defineProperty(proxy, symbol, {})); |
| 44 | assertThrows(() => Object.defineProperty(proxy, symbol, {}), TypeError); |
| 45 | assertEquals(true, Reflect.defineProperty(object, symbol, {})); |
| 46 | assertEquals(object, Object.defineProperty(object, symbol, {})); |
| 47 | |
| 48 | // [[Delete]] |
| 49 | assertEquals(true, delete proxy[symbol]); |
| 50 | assertEquals(true, (function() {"use strict"; return delete proxy[symbol]})()); |
| 51 | assertEquals(true, Reflect.deleteProperty(proxy, symbol)); |
| 52 | assertEquals(true, delete object[symbol]); |
| 53 | assertEquals(true, (function() {"use strict"; return delete object[symbol]})()); |
| 54 | assertEquals(true, Reflect.deleteProperty(object, symbol)); |
| 55 | |
| 56 | // [[GetOwnPropertyDescriptor]] |
| 57 | assertEquals(undefined, Object.getOwnPropertyDescriptor(proxy, symbol)); |
| 58 | assertEquals(undefined, Reflect.getOwnPropertyDescriptor(proxy, symbol)); |
| 59 | assertFalse(Object.prototype.hasOwnProperty.call(proxy, symbol)); |
| 60 | assertEquals(undefined, Object.getOwnPropertyDescriptor(object, symbol)); |
| 61 | assertEquals(undefined, Reflect.getOwnPropertyDescriptor(object, symbol)); |
| 62 | assertFalse(Object.prototype.hasOwnProperty.call(object, symbol)); |
| 63 | |
| 64 | // [[Has]] |
| 65 | assertFalse(symbol in proxy); |
| 66 | assertFalse(Reflect.has(proxy, symbol)); |
| 67 | assertFalse(symbol in object); |
| 68 | assertFalse(Reflect.has(object, symbol)); |
| 69 | |
| 70 | // [[Get]] |
| 71 | assertEquals(undefined, proxy[symbol]); |
| 72 | assertEquals(undefined, Reflect.get(proxy, symbol)); |
| 73 | assertEquals(undefined, Reflect.get(proxy, symbol, 42)); |
| 74 | assertEquals(undefined, object[symbol]); |
| 75 | assertEquals(undefined, Reflect.get(object, symbol)); |
| 76 | assertEquals(undefined, Reflect.get(object, symbol, 42)); |