Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2015 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 | |
| 5 | // Flags: --harmony-proxies --harmony-reflect |
| 6 | |
| 7 | |
| 8 | |
| 9 | function toKey(x) { |
| 10 | if (typeof x === "symbol") return x; |
| 11 | return String(x); |
| 12 | } |
| 13 | |
| 14 | |
| 15 | const noconf = {configurable: false}; |
| 16 | const noconf_nowrite = {configurable: false, writable: false}; |
| 17 | |
| 18 | |
| 19 | var symbol = Symbol(); |
| 20 | |
| 21 | |
| 22 | var log = []; |
| 23 | var logger = {}; |
| 24 | var handler = new Proxy({}, logger); |
| 25 | |
| 26 | logger.get = function(t, trap, r) { |
| 27 | return function() { |
| 28 | log.push([trap, ...arguments]); |
| 29 | return Reflect[trap](...arguments); |
| 30 | } |
| 31 | }; |
| 32 | |
| 33 | |
| 34 | (function Seal() { |
| 35 | var target = []; |
| 36 | var proxy = new Proxy(target, handler); |
| 37 | log.length = 0; |
| 38 | |
| 39 | target.wurst = 42; |
| 40 | target[0] = true; |
| 41 | Object.defineProperty(target, symbol, {get: undefined}); |
| 42 | |
| 43 | Object.seal(proxy); |
| 44 | assertEquals(6, log.length) |
| 45 | for (var i in log) assertSame(target, log[i][1]); |
| 46 | |
| 47 | assertArrayEquals( |
| 48 | ["preventExtensions", target], log[0]); |
| 49 | assertArrayEquals( |
| 50 | ["ownKeys", target], log[1]); |
| 51 | assertArrayEquals( |
| 52 | ["defineProperty", target, toKey(0), noconf], log[2]); |
| 53 | assertArrayEquals( |
| 54 | ["defineProperty", target, toKey("length"), noconf], log[3]); |
| 55 | assertArrayEquals( |
| 56 | ["defineProperty", target, toKey("wurst"), noconf], log[4]); |
| 57 | assertArrayEquals( |
| 58 | ["defineProperty", target, toKey(symbol), noconf], log[5]); |
| 59 | })(); |
| 60 | |
| 61 | |
| 62 | (function Freeze() { |
| 63 | var target = []; |
| 64 | var proxy = new Proxy(target, handler); |
| 65 | log.length = 0; |
| 66 | |
| 67 | target.wurst = 42; |
| 68 | target[0] = true; |
| 69 | Object.defineProperty(target, symbol, {get: undefined}); |
| 70 | |
| 71 | Object.freeze(proxy); |
| 72 | assertEquals(10, log.length) |
| 73 | for (var i in log) assertSame(target, log[i][1]); |
| 74 | |
| 75 | assertArrayEquals( |
| 76 | ["preventExtensions", target], log[0]); |
| 77 | assertArrayEquals( |
| 78 | ["ownKeys", target], log[1]); |
| 79 | assertArrayEquals( |
| 80 | ["getOwnPropertyDescriptor", target, toKey(0)], log[2]); |
| 81 | assertArrayEquals( |
| 82 | ["defineProperty", target, toKey(0), noconf_nowrite], log[3]); |
| 83 | assertArrayEquals( |
| 84 | ["getOwnPropertyDescriptor", target, toKey("length")], log[4]); |
| 85 | assertArrayEquals( |
| 86 | ["defineProperty", target, toKey("length"), noconf_nowrite], log[5]); |
| 87 | assertArrayEquals( |
| 88 | ["getOwnPropertyDescriptor", target, toKey("wurst")], log[6]); |
| 89 | assertArrayEquals( |
| 90 | ["defineProperty", target, toKey("wurst"), noconf_nowrite], log[7]); |
| 91 | assertArrayEquals( |
| 92 | ["getOwnPropertyDescriptor", target, toKey(symbol)], log[8]); |
| 93 | assertArrayEquals( |
| 94 | ["defineProperty", target, toKey(symbol), noconf], log[9]); |
| 95 | })(); |
| 96 | |
| 97 | |
| 98 | (function IsSealed() { |
| 99 | var target = []; |
| 100 | var proxy = new Proxy(target, handler); |
| 101 | |
| 102 | target.wurst = 42; |
| 103 | target[0] = true; |
| 104 | Object.defineProperty(target, symbol, {get: undefined}); |
| 105 | |
| 106 | // Extensible. |
| 107 | |
| 108 | log.length = 0; |
| 109 | |
| 110 | Object.isSealed(proxy); |
| 111 | assertEquals(1, log.length) |
| 112 | for (var i in log) assertSame(target, log[i][1]); |
| 113 | |
| 114 | assertArrayEquals( |
| 115 | ["isExtensible", target], log[0]); |
| 116 | |
| 117 | // Not extensible but not sealed. |
| 118 | |
| 119 | log.length = 0; |
| 120 | Object.preventExtensions(target); |
| 121 | |
| 122 | Object.isSealed(proxy); |
| 123 | assertEquals(3, log.length) |
| 124 | for (var i in log) assertSame(target, log[i][1]); |
| 125 | |
| 126 | assertArrayEquals( |
| 127 | ["isExtensible", target], log[0]); |
| 128 | assertArrayEquals( |
| 129 | ["ownKeys", target], log[1]); |
| 130 | assertArrayEquals( |
| 131 | ["getOwnPropertyDescriptor", target, toKey(0)], log[2]); |
| 132 | |
| 133 | // Sealed. |
| 134 | |
| 135 | log.length = 0; |
| 136 | Object.seal(target); |
| 137 | |
| 138 | Object.isSealed(proxy); |
| 139 | assertEquals(6, log.length) |
| 140 | for (var i in log) assertSame(target, log[i][1]); |
| 141 | |
| 142 | assertArrayEquals( |
| 143 | ["isExtensible", target], log[0]); |
| 144 | assertArrayEquals( |
| 145 | ["ownKeys", target], log[1]); |
| 146 | assertArrayEquals( |
| 147 | ["getOwnPropertyDescriptor", target, toKey(0)], log[2]); |
| 148 | assertArrayEquals( |
| 149 | ["getOwnPropertyDescriptor", target, toKey("length")], log[3]); |
| 150 | assertArrayEquals( |
| 151 | ["getOwnPropertyDescriptor", target, toKey("wurst")], log[4]); |
| 152 | assertArrayEquals( |
| 153 | ["getOwnPropertyDescriptor", target, toKey(symbol)], log[5]); |
| 154 | })(); |
| 155 | |
| 156 | |
| 157 | (function IsFrozen() { |
| 158 | var target = []; |
| 159 | var proxy = new Proxy(target, handler); |
| 160 | |
| 161 | target.wurst = 42; |
| 162 | target[0] = true; |
| 163 | Object.defineProperty(target, symbol, {get: undefined}); |
| 164 | |
| 165 | // Extensible. |
| 166 | |
| 167 | log.length = 0; |
| 168 | |
| 169 | Object.isFrozen(proxy); |
| 170 | assertEquals(1, log.length) |
| 171 | for (var i in log) assertSame(target, log[i][1]); |
| 172 | |
| 173 | assertArrayEquals( |
| 174 | ["isExtensible", target], log[0]); |
| 175 | |
| 176 | // Not extensible but not frozen. |
| 177 | |
| 178 | log.length = 0; |
| 179 | Object.preventExtensions(target); |
| 180 | |
| 181 | Object.isFrozen(proxy); |
| 182 | assertEquals(3, log.length) |
| 183 | for (var i in log) assertSame(target, log[i][1]); |
| 184 | |
| 185 | assertArrayEquals( |
| 186 | ["isExtensible", target], log[0]); |
| 187 | assertArrayEquals( |
| 188 | ["ownKeys", target], log[1]); |
| 189 | assertArrayEquals( |
| 190 | ["getOwnPropertyDescriptor", target, toKey(0)], log[2]); |
| 191 | |
| 192 | // Frozen. |
| 193 | |
| 194 | log.length = 0; |
| 195 | Object.freeze(target); |
| 196 | |
| 197 | Object.isFrozen(proxy); |
| 198 | assertEquals(6, log.length) |
| 199 | for (var i in log) assertSame(target, log[i][1]); |
| 200 | |
| 201 | assertArrayEquals( |
| 202 | ["isExtensible", target], log[0]); |
| 203 | assertArrayEquals( |
| 204 | ["ownKeys", target], log[1]); |
| 205 | assertArrayEquals( |
| 206 | ["getOwnPropertyDescriptor", target, toKey(0)], log[2]); |
| 207 | assertArrayEquals( |
| 208 | ["getOwnPropertyDescriptor", target, toKey("length")], log[3]); |
| 209 | assertArrayEquals( |
| 210 | ["getOwnPropertyDescriptor", target, toKey("wurst")], log[4]); |
| 211 | assertArrayEquals( |
| 212 | ["getOwnPropertyDescriptor", target, toKey(symbol)], log[5]); |
| 213 | })(); |