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| 1 // Copyright 2014 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-classes | |
| 6 | |
| 7 'use strict'; | |
| 8 (function TestArgumentsAccess() { | |
| 9 class Base { | |
| 10 constructor() { | |
| 11 assertEquals(2, arguments.length); | |
| 12 assertEquals(1, arguments[0]); | |
| 13 assertEquals(2, arguments[1]); | |
| 14 } | |
| 15 } | |
| 16 | |
| 17 let b = new Base(1,2); | |
| 18 | |
| 19 class Subclass extends Base { | |
| 20 constructor() { | |
| 21 assertEquals(2, arguments.length); | |
| 22 assertEquals(3, arguments[0]); | |
| 23 assertEquals(4, arguments[1]); | |
| 24 super(1,2); | |
| 25 } | |
| 26 } | |
| 27 | |
| 28 let s = new Subclass(3,4); | |
| 29 assertEquals(0, Subclass.length); | |
| 30 | |
| 31 class Subclass2 extends Base { | |
| 32 constructor(x,y) { | |
| 33 assertEquals(2, arguments.length); | |
| 34 assertEquals(3, arguments[0]); | |
| 35 assertEquals(4, arguments[1]); | |
| 36 super(1,2); | |
| 37 } | |
| 38 } | |
| 39 | |
| 40 let s2 = new Subclass2(3,4); | |
| 41 assertEquals(2, Subclass2.length); | |
| 42 }()); | |
| 43 | |
| 44 (function TestThisAccessRestriction() { | |
| 45 class Base { | |
| 46 constructor(a, b) { | |
| 47 let o = new Object(); | |
| 48 o.prp = a + b; | |
| 49 return o; | |
| 50 } | |
| 51 } | |
| 52 | |
| 53 class Subclass extends Base { | |
| 54 constructor(a, b) { | |
| 55 var exn; | |
| 56 try { | |
| 57 this.prp1 = 3; | |
| 58 } catch (e) { | |
| 59 exn = e; | |
| 60 } | |
| 61 assertTrue(exn instanceof ReferenceError); | |
| 62 super(a, b); | |
| 63 assertSame(a + b, this.prp); | |
| 64 assertSame(undefined, this.prp1); | |
| 65 assertFalse(this.hasOwnProperty("prp1")); | |
| 66 return this; | |
| 67 } | |
| 68 } | |
| 69 | |
| 70 let b = new Base(1, 2); | |
| 71 assertSame(3, b.prp); | |
| 72 | |
| 73 | |
| 74 let s = new Subclass(2, -1); | |
| 75 assertSame(1, s.prp); | |
| 76 assertSame(undefined, s.prp1); | |
| 77 assertFalse(s.hasOwnProperty("prp1")); | |
| 78 | |
| 79 class Subclass2 extends Base { | |
| 80 constructor(x) { | |
| 81 super(1,2); | |
| 82 | |
| 83 if (x < 0) return; | |
| 84 | |
| 85 let called = false; | |
| 86 function tmp() { called = true; return 3; } | |
| 87 var exn = null; | |
| 88 try { | |
| 89 super(tmp(),4); | |
| 90 } catch (e) { exn = e; } | |
| 91 assertTrue(exn instanceof ReferenceError); | |
| 92 assertTrue(called); | |
| 93 } | |
| 94 } | |
| 95 | |
| 96 var s2 = new Subclass2(1); | |
| 97 assertSame(3, s2.prp); | |
| 98 | |
| 99 var s3 = new Subclass2(-1); | |
| 100 assertSame(3, s3.prp); | |
| 101 | |
| 102 assertThrows(function() { Subclass.call(new Object(), 1, 2); }, TypeError); | |
| 103 assertThrows(function() { Base.call(new Object(), 1, 2); }, TypeError); | |
| 104 | |
| 105 class BadSubclass extends Base { | |
| 106 constructor() {} | |
| 107 } | |
| 108 | |
| 109 assertThrows(function() { new BadSubclass(); }, ReferenceError); | |
| 110 }()); | |
| 111 | |
| 112 (function TestThisCheckOrdering() { | |
| 113 let baseCalled = 0; | |
| 114 class Base { | |
| 115 constructor() { baseCalled++ } | |
| 116 } | |
| 117 | |
| 118 let fCalled = 0; | |
| 119 function f() { fCalled++; return 3; } | |
| 120 | |
| 121 class Subclass1 extends Base { | |
| 122 constructor() { | |
| 123 baseCalled = 0; | |
| 124 super(); | |
| 125 assertEquals(1, baseCalled); | |
| 126 let obj = this; | |
| 127 | |
| 128 let exn = null; | |
| 129 baseCalled = 0; | |
| 130 fCalled = 0; | |
| 131 try { | |
| 132 super(f()); | |
| 133 } catch (e) { exn = e; } | |
| 134 assertTrue(exn instanceof ReferenceError); | |
| 135 assertEquals(1, fCalled); | |
| 136 assertEquals(1, baseCalled); | |
| 137 assertSame(obj, this); | |
| 138 | |
| 139 exn = null; | |
| 140 baseCalled = 0; | |
| 141 fCalled = 0; | |
| 142 try { | |
| 143 super(super(), f()); | |
| 144 } catch (e) { exn = e; } | |
| 145 assertTrue(exn instanceof ReferenceError); | |
| 146 assertEquals(0, fCalled); | |
| 147 assertEquals(1, baseCalled); | |
| 148 assertSame(obj, this); | |
| 149 | |
| 150 exn = null; | |
| 151 baseCalled = 0; | |
| 152 fCalled = 0; | |
| 153 try { | |
| 154 super(f(), super()); | |
| 155 } catch (e) { exn = e; } | |
| 156 assertTrue(exn instanceof ReferenceError); | |
| 157 assertEquals(1, fCalled); | |
| 158 assertEquals(1, baseCalled); | |
| 159 assertSame(obj, this); | |
| 160 } | |
| 161 } | |
| 162 | |
| 163 new Subclass1(); | |
| 164 }()); | |
| 165 | |
| 166 | |
| 167 (function TestPrototypeWiring() { | |
| 168 class Base { | |
| 169 constructor(x) { | |
| 170 this.foobar = x; | |
| 171 } | |
| 172 } | |
| 173 | |
| 174 class Subclass extends Base { | |
| 175 constructor(x) { | |
| 176 super(x); | |
| 177 } | |
| 178 } | |
| 179 | |
| 180 let s = new Subclass(1); | |
| 181 assertSame(1, s.foobar); | |
| 182 assertSame(Subclass.prototype, s.__proto__); | |
| 183 | |
| 184 let s1 = new Subclass(1, 2); | |
| 185 assertSame(1, s1.foobar); | |
| 186 assertTrue(s1.__proto__ === Subclass.prototype); | |
| 187 | |
| 188 let s2 = new Subclass(); | |
| 189 assertSame(undefined, s2.foobar); | |
| 190 assertSame(Subclass.prototype, s2.__proto__); | |
| 191 assertThrows(function() { Subclass(1); }, TypeError); | |
| 192 assertThrows(function() { Subclass(1,2,3,4); }, TypeError); | |
| 193 | |
| 194 class Subclass2 extends Subclass { | |
| 195 constructor() { | |
| 196 super(5, 6, 7); | |
| 197 } | |
| 198 } | |
| 199 | |
| 200 let ss2 = new Subclass2(); | |
| 201 assertSame(5, ss2.foobar); | |
| 202 assertSame(Subclass2.prototype, ss2.__proto__); | |
| 203 | |
| 204 class Subclass3 extends Base { | |
| 205 constructor(x,y) { | |
| 206 super(x + y); | |
| 207 } | |
| 208 } | |
| 209 | |
| 210 let ss3 = new Subclass3(27,42-27); | |
| 211 assertSame(42, ss3.foobar); | |
| 212 assertSame(Subclass3.prototype, ss3.__proto__); | |
| 213 }()); | |
| 214 | |
| 215 (function TestSublclassingBuiltins() { | |
| 216 class ExtendedUint8Array extends Uint8Array { | |
| 217 constructor() { | |
| 218 super(10); | |
| 219 this[0] = 255; | |
| 220 this[1] = 0xFFA; | |
| 221 } | |
| 222 } | |
| 223 | |
| 224 var eua = new ExtendedUint8Array(); | |
| 225 assertEquals(10, eua.length); | |
| 226 assertEquals(10, eua.byteLength); | |
| 227 assertEquals(0xFF, eua[0]); | |
| 228 assertEquals(0xFA, eua[1]); | |
| 229 assertSame(ExtendedUint8Array.prototype, eua.__proto__); | |
| 230 assertEquals("[object Uint8Array]", Object.prototype.toString.call(eua)); | |
| 231 }()); | |
| 232 | |
| 233 (function TestSubclassingNull() { | |
| 234 let N = null; | |
| 235 | |
| 236 class Foo extends N { | |
| 237 constructor(x,y) { | |
| 238 assertSame(1, x); | |
| 239 assertSame(2, y); | |
| 240 return {}; | |
| 241 } | |
| 242 } | |
| 243 | |
| 244 new Foo(1,2); | |
| 245 }()); | |
| 246 | |
| 247 (function TestSubclassBinding() { | |
| 248 class Base { | |
| 249 constructor(x, y) { | |
| 250 this.x = x; | |
| 251 this.y = y; | |
| 252 } | |
| 253 } | |
| 254 | |
| 255 let obj = {}; | |
| 256 class Subclass extends Base { | |
| 257 constructor(x,y) { | |
| 258 super(x,y); | |
| 259 assertTrue(this !== obj); | |
| 260 } | |
| 261 } | |
| 262 | |
| 263 let f = Subclass.bind(obj); | |
| 264 assertThrows(function () { f(1, 2); }, TypeError); | |
| 265 let s = new f(1, 2); | |
| 266 assertSame(1, s.x); | |
| 267 assertSame(2, s.y); | |
| 268 assertSame(Subclass.prototype, s.__proto__); | |
| 269 | |
| 270 let s1 = new f(1); | |
| 271 assertSame(1, s1.x); | |
| 272 assertSame(undefined, s1.y); | |
| 273 assertSame(Subclass.prototype, s1.__proto__); | |
| 274 | |
| 275 let g = Subclass.bind(obj, 1); | |
| 276 assertThrows(function () { g(8); }, TypeError); | |
| 277 let s2 = new g(8); | |
| 278 assertSame(1, s2.x); | |
| 279 assertSame(8, s2.y); | |
| 280 assertSame(Subclass.prototype, s.__proto__); | |
| 281 }()); | |
| 282 | |
| 283 | |
| 284 (function TestDefaultConstructor() { | |
| 285 class Base1 { } | |
| 286 assertThrows(function() { Base1(); }, TypeError); | |
| 287 | |
| 288 class Subclass1 extends Base1 { } | |
| 289 | |
| 290 assertThrows(function() { Subclass1(); }, TypeError); | |
| 291 | |
| 292 let s1 = new Subclass1(); | |
| 293 assertSame(s1.__proto__, Subclass1.prototype); | |
| 294 | |
| 295 class Base2 { | |
| 296 constructor(x, y) { | |
| 297 this.x = x; | |
| 298 this.y = y; | |
| 299 } | |
| 300 } | |
| 301 | |
| 302 class Subclass2 extends Base2 {}; | |
| 303 | |
| 304 let s2 = new Subclass2(1, 2); | |
| 305 | |
| 306 assertSame(s2.__proto__, Subclass2.prototype); | |
| 307 assertSame(1, s2.x); | |
| 308 assertSame(2, s2.y); | |
| 309 | |
| 310 let f = Subclass2.bind({}, 3, 4); | |
| 311 let s2prime = new f(); | |
| 312 assertSame(s2prime.__proto__, Subclass2.prototype); | |
| 313 assertSame(3, s2prime.x); | |
| 314 assertSame(4, s2prime.y); | |
| 315 | |
| 316 let obj = {}; | |
| 317 class Base3 { | |
| 318 constructor() { | |
| 319 return obj; | |
| 320 } | |
| 321 } | |
| 322 | |
| 323 class Subclass3 extends Base3 {}; | |
| 324 | |
| 325 let s3 = new Subclass3(); | |
| 326 assertSame(obj, s3); | |
| 327 | |
| 328 class ExtendedUint8Array extends Uint8Array { } | |
| 329 | |
| 330 var eua = new ExtendedUint8Array(10); | |
| 331 assertEquals(10, eua.length); | |
| 332 assertEquals(10, eua.byteLength); | |
| 333 eua[0] = 0xFF; | |
| 334 eua[1] = 0xFFA; | |
| 335 assertEquals(0xFF, eua[0]); | |
| 336 assertEquals(0xFA, eua[1]); | |
| 337 assertSame(ExtendedUint8Array.prototype, eua.__proto__); | |
| 338 assertEquals("[object Uint8Array]", Object.prototype.toString.call(eua)); | |
| 339 }()); | |
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Chromium Code Reviews
Issue 1213813003:
[es6] Remove harmony-classes flag (Closed)
Base URL: https://chromium.googlesource.com/v8/v8.git@master