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-function-name |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 6 | // Flags: --harmony-destructuring-bind --harmony-destructuring-assignment |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 7 | |
| 8 | (function testVariableDeclarationsFunction() { |
| 9 | 'use strict'; |
| 10 | var a = function(){}; |
| 11 | assertEquals('a', a.name); |
| 12 | let b = () => {}; |
| 13 | assertEquals('b', b.name); |
| 14 | const c = ((function(){})); |
| 15 | assertEquals('c', c.name); |
| 16 | |
| 17 | var x = function(){}, y = () => {}, z = function withName() {}; |
| 18 | assertEquals('x', x.name); |
| 19 | assertEquals('y', y.name); |
| 20 | assertEquals('withName', z.name); |
| 21 | })(); |
| 22 | |
| 23 | (function testVariableDeclarationsClass() { |
| 24 | 'use strict'; |
| 25 | var a = class {}; |
| 26 | assertEquals('a', a.name); |
| 27 | let b = ((class {})); |
| 28 | assertEquals('b', b.name); |
| 29 | // Should not overwrite name property. |
| 30 | const c = class { static name() { } } |
| 31 | assertEquals('function', typeof c.name); |
| 32 | |
| 33 | var x = class {}, y = class NamedClass {}; |
| 34 | assertEquals('x', x.name); |
| 35 | assertEquals('NamedClass', y.name); |
| 36 | })(); |
| 37 | |
| 38 | (function testObjectProperties() { |
| 39 | 'use strict'; |
| 40 | var obj = { |
| 41 | a: function() {}, |
| 42 | b: () => {}, |
| 43 | c() { }, |
| 44 | get d() { }, |
| 45 | set d(val) { }, |
| 46 | x: function withName() { }, |
| 47 | y: class { }, |
| 48 | z: class ClassName { }, |
| 49 | 42: function() {}, |
| 50 | 4.2: function() {}, |
| 51 | __proto__: function() {}, |
| 52 | }; |
| 53 | |
| 54 | assertEquals('a', obj.a.name); |
| 55 | assertEquals('b', obj.b.name); |
| 56 | assertEquals('c', obj.c.name); |
| 57 | var dDescriptor = Object.getOwnPropertyDescriptor(obj, 'd'); |
| 58 | assertEquals('get d', dDescriptor.get.name); |
| 59 | assertEquals('set d', dDescriptor.set.name); |
| 60 | assertEquals('withName', obj.x.name); |
| 61 | assertEquals('y', obj.y.name); |
| 62 | assertEquals('ClassName', obj.z.name); |
| 63 | assertEquals('42', obj[42].name); |
| 64 | assertEquals('4.2', obj[4.2].name); |
| 65 | assertEquals('', obj.__proto__.name); |
| 66 | })(); |
| 67 | |
| 68 | (function testClassProperties() { |
| 69 | 'use strict'; |
| 70 | class C { |
| 71 | a() { } |
| 72 | static b() { } |
| 73 | get c() { } |
| 74 | set c(val) { } |
| 75 | 42() { } |
| 76 | static 43() { } |
| 77 | get 44() { } |
| 78 | set 44(val) { } |
| 79 | }; |
| 80 | |
| 81 | assertEquals('a', C.prototype.a.name); |
| 82 | assertEquals('b', C.b.name); |
| 83 | var descriptor = Object.getOwnPropertyDescriptor(C.prototype, 'c'); |
| 84 | assertEquals('get c', descriptor.get.name); |
| 85 | assertEquals('set c', descriptor.set.name); |
| 86 | assertEquals('42', C.prototype[42].name); |
| 87 | assertEquals('43', C[43].name); |
| 88 | var descriptor = Object.getOwnPropertyDescriptor(C.prototype, '44'); |
| 89 | assertEquals('get 44', descriptor.get.name); |
| 90 | assertEquals('set 44', descriptor.set.name); |
| 91 | })(); |
| 92 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 93 | (function testComputedProperties() { |
| 94 | 'use strict'; |
| 95 | var a = 'a'; |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 96 | var b = 'b'; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 97 | var sym1 = Symbol('1'); |
| 98 | var sym2 = Symbol('2'); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 99 | var sym3 = Symbol('3'); |
| 100 | var symNoDescription = Symbol(); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 101 | var obj = { |
| 102 | [a]: function() {}, |
| 103 | [sym1]: function() {}, |
| 104 | [sym2]: function withName() {}, |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 105 | [symNoDescription]: function() {}, |
| 106 | |
| 107 | get [sym3]() {}, |
| 108 | set [b](val) {}, |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 109 | }; |
| 110 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 111 | assertEquals('a', obj[a].name); |
| 112 | assertEquals('[1]', obj[sym1].name); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 113 | assertEquals('withName', obj[sym2].name); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 114 | assertEquals('', obj[symNoDescription].name); |
| 115 | |
| 116 | assertEquals('get [3]', Object.getOwnPropertyDescriptor(obj, sym3).get.name); |
| 117 | assertEquals('set b', Object.getOwnPropertyDescriptor(obj, 'b').set.name); |
| 118 | |
| 119 | var objMethods = { |
| 120 | [a]() {}, |
| 121 | [sym1]() {}, |
| 122 | [symNoDescription]: function() {}, |
| 123 | }; |
| 124 | |
| 125 | assertEquals('a', objMethods[a].name); |
| 126 | assertEquals('[1]', objMethods[sym1].name); |
| 127 | assertEquals('', objMethods[symNoDescription].name); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 128 | |
| 129 | class C { |
| 130 | [a]() { } |
| 131 | [sym1]() { } |
| 132 | static [sym2]() { } |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 133 | [symNoDescription]() { } |
| 134 | |
| 135 | get [sym3]() { } |
| 136 | static set [b](val) { } |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 137 | } |
| 138 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 139 | assertEquals('a', C.prototype[a].name); |
| 140 | assertEquals('[1]', C.prototype[sym1].name); |
| 141 | assertEquals('[2]', C[sym2].name); |
| 142 | assertEquals('', C.prototype[symNoDescription].name); |
| 143 | |
| 144 | assertEquals('get [3]', Object.getOwnPropertyDescriptor(C.prototype, sym3).get.name); |
| 145 | assertEquals('set b', Object.getOwnPropertyDescriptor(C, 'b').set.name); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 146 | })(); |
| 147 | |
| 148 | |
| 149 | (function testAssignment() { |
| 150 | var basicFn, arrowFn, generatorFn, classLit; |
| 151 | |
| 152 | basicFn = function() { return true; }; |
| 153 | assertEquals('basicFn', basicFn.name); |
| 154 | var basicFn2 = basicFn; |
| 155 | assertEquals('basicFn', basicFn2.name); |
| 156 | basicFn = function functionWithName() { }; |
| 157 | assertEquals("functionWithName", basicFn.name); |
| 158 | |
| 159 | arrowFn = x => x; |
| 160 | assertEquals('arrowFn', arrowFn.name); |
| 161 | var arrowFn2 = arrowFn; |
| 162 | assertEquals('arrowFn', arrowFn2.name); |
| 163 | |
| 164 | generatorFn = function*() { yield true; }; |
| 165 | assertEquals('generatorFn', generatorFn.name); |
| 166 | var generatorFn2 = generatorFn; |
| 167 | assertEquals('generatorFn', generatorFn2.name); |
| 168 | generatorFn = function* generatorWithName() { }; |
| 169 | assertEquals("generatorWithName", generatorFn.name); |
| 170 | |
| 171 | classLit = class { constructor() {} }; |
| 172 | assertEquals('classLit', classLit.name); |
| 173 | var classLit2 = classLit; |
| 174 | assertEquals('classLit', classLit2.name); |
| 175 | classLit = class classWithName { constructor() {} }; |
| 176 | assertEquals('classWithName', classLit.name); |
| 177 | classLit = class { constructor() {} static name() {} }; |
| 178 | assertEquals('function', typeof classLit.name); |
| 179 | classLit = class { constructor() {} static get name() { return true; } }; |
| 180 | assertTrue(classLit.name); |
| 181 | classLit = class { constructor() {} static ['name']() {} }; |
| 182 | assertEquals('function', typeof classLit.name); |
| 183 | classLit = class { constructor() {} static get ['name']() { return true; } }; |
| 184 | assertTrue(classLit.name); |
| 185 | })(); |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame^] | 186 | |
| 187 | (function testObjectBindingPattern() { |
| 188 | var { |
| 189 | a = function() {}, |
| 190 | b = () => {}, |
| 191 | x = function withName() { }, |
| 192 | y = class { }, |
| 193 | z = class ClassName { }, |
| 194 | q = class { static name() { return 42 } }, |
| 195 | foo: bar = function() {}, |
| 196 | inParens = (() => {}), |
| 197 | inManyParens = ((((() => {})))), |
| 198 | } = {}; |
| 199 | assertEquals('a', a.name); |
| 200 | assertEquals('b', b.name); |
| 201 | assertEquals('withName', x.name); |
| 202 | assertEquals('y', y.name); |
| 203 | assertEquals('ClassName', z.name); |
| 204 | assertEquals('function', typeof q.name); |
| 205 | assertEquals('bar', bar.name); |
| 206 | assertEquals('inParens', inParens.name) |
| 207 | assertEquals('inManyParens', inManyParens.name) |
| 208 | })(); |
| 209 | |
| 210 | (function testArrayBindingPattern() { |
| 211 | var [ |
| 212 | a = function() {}, |
| 213 | b = () => {}, |
| 214 | x = function withName() { }, |
| 215 | y = class { }, |
| 216 | z = class ClassName { }, |
| 217 | q = class { static name() { return 42 } }, |
| 218 | inParens = (() => {}), |
| 219 | inManyParens = ((((() => {})))), |
| 220 | ] = []; |
| 221 | assertEquals('a', a.name); |
| 222 | assertEquals('b', b.name); |
| 223 | assertEquals('withName', x.name); |
| 224 | assertEquals('y', y.name); |
| 225 | assertEquals('ClassName', z.name); |
| 226 | assertEquals('function', typeof q.name); |
| 227 | assertEquals('inParens', inParens.name) |
| 228 | assertEquals('inManyParens', inManyParens.name) |
| 229 | })(); |
| 230 | |
| 231 | (function testObjectAssignmentPattern() { |
| 232 | var a, b, x, y, z, q; |
| 233 | ({ |
| 234 | a = function() {}, |
| 235 | b = () => {}, |
| 236 | x = function withName() { }, |
| 237 | y = class { }, |
| 238 | z = class ClassName { }, |
| 239 | q = class { static name() { return 42 } }, |
| 240 | foo: bar = function() {}, |
| 241 | inParens = (() => {}), |
| 242 | inManyParens = ((((() => {})))), |
| 243 | } = {}); |
| 244 | assertEquals('a', a.name); |
| 245 | assertEquals('b', b.name); |
| 246 | assertEquals('withName', x.name); |
| 247 | assertEquals('y', y.name); |
| 248 | assertEquals('ClassName', z.name); |
| 249 | assertEquals('function', typeof q.name); |
| 250 | assertEquals('bar', bar.name); |
| 251 | assertEquals('inParens', inParens.name) |
| 252 | assertEquals('inManyParens', inManyParens.name) |
| 253 | })(); |
| 254 | |
| 255 | (function testArrayAssignmentPattern() { |
| 256 | var a, b, x, y, z, q; |
| 257 | [ |
| 258 | a = function() {}, |
| 259 | b = () => {}, |
| 260 | x = function withName() { }, |
| 261 | y = class { }, |
| 262 | z = class ClassName { }, |
| 263 | q = class { static name() { return 42 } }, |
| 264 | inParens = (() => {}), |
| 265 | inManyParens = ((((() => {})))), |
| 266 | ] = []; |
| 267 | assertEquals('a', a.name); |
| 268 | assertEquals('b', b.name); |
| 269 | assertEquals('withName', x.name); |
| 270 | assertEquals('y', y.name); |
| 271 | assertEquals('ClassName', z.name); |
| 272 | assertEquals('function', typeof q.name); |
| 273 | assertEquals('inParens', inParens.name) |
| 274 | assertEquals('inManyParens', inManyParens.name) |
| 275 | })(); |
| 276 | |
| 277 | (function testParameterDestructuring() { |
| 278 | (function({ a = function() {}, |
| 279 | b = () => {}, |
| 280 | x = function withName() { }, |
| 281 | y = class { }, |
| 282 | z = class ClassName { }, |
| 283 | q = class { static name() { return 42 } }, |
| 284 | foo: bar = function() {}, |
| 285 | inParens = (() => {}), |
| 286 | inManyParens = ((((() => {})))) }) { |
| 287 | assertEquals('a', a.name); |
| 288 | assertEquals('b', b.name); |
| 289 | assertEquals('withName', x.name); |
| 290 | assertEquals('y', y.name); |
| 291 | assertEquals('ClassName', z.name); |
| 292 | assertEquals('function', typeof q.name); |
| 293 | assertEquals('bar', bar.name); |
| 294 | assertEquals('inParens', inParens.name) |
| 295 | assertEquals('inManyParens', inManyParens.name) |
| 296 | })({}); |
| 297 | |
| 298 | (function([ a = function() {}, |
| 299 | b = () => {}, |
| 300 | x = function withName() { }, |
| 301 | y = class { }, |
| 302 | z = class ClassName { }, |
| 303 | q = class { static name() { return 42 } }, |
| 304 | inParens = (() => {}), |
| 305 | inManyParens = ((((() => {})))) ]) { |
| 306 | assertEquals('a', a.name); |
| 307 | assertEquals('b', b.name); |
| 308 | assertEquals('withName', x.name); |
| 309 | assertEquals('y', y.name); |
| 310 | assertEquals('ClassName', z.name); |
| 311 | assertEquals('function', typeof q.name); |
| 312 | assertEquals('inParens', inParens.name) |
| 313 | assertEquals('inManyParens', inManyParens.name) |
| 314 | })([]); |
| 315 | })(); |
| 316 | |
| 317 | (function testDefaultParameters() { |
| 318 | (function(a = function() {}, |
| 319 | b = () => {}, |
| 320 | x = function withName() { }, |
| 321 | y = class { }, |
| 322 | z = class ClassName { }, |
| 323 | q = class { static name() { return 42 } }, |
| 324 | inParens = (() => {}), |
| 325 | inManyParens = ((((() => {}))))) { |
| 326 | assertEquals('a', a.name); |
| 327 | assertEquals('b', b.name); |
| 328 | assertEquals('withName', x.name); |
| 329 | assertEquals('y', y.name); |
| 330 | assertEquals('ClassName', z.name); |
| 331 | assertEquals('function', typeof q.name); |
| 332 | assertEquals('inParens', inParens.name) |
| 333 | assertEquals('inManyParens', inManyParens.name) |
| 334 | })(); |
| 335 | })(); |
| 336 | |
| 337 | (function testComputedNameNotShared() { |
| 338 | function makeClass(propName) { |
| 339 | return class { |
| 340 | static [propName]() {} |
| 341 | } |
| 342 | } |
| 343 | |
| 344 | var sym1 = Symbol('1'); |
| 345 | var sym2 = Symbol('2'); |
| 346 | var class1 = makeClass(sym1); |
| 347 | assertEquals('[1]', class1[sym1].name); |
| 348 | var class2 = makeClass(sym2); |
| 349 | assertEquals('[2]', class2[sym2].name); |
| 350 | assertEquals('[1]', class1[sym1].name); |
| 351 | })(); |
| 352 | |
| 353 | |
| 354 | (function testComputedNamesOnlyAppliedSyntactically() { |
| 355 | function factory() { return () => {}; } |
| 356 | |
| 357 | var obj = { ['foo']: factory() }; |
| 358 | assertEquals('', obj.foo.name); |
| 359 | })(); |
| 360 | |
| 361 | |
| 362 | (function testNameNotReflectedInToString() { |
| 363 | var f = function() {}; |
| 364 | var g = function*() {}; |
| 365 | var obj = { |
| 366 | ['h']: function() {}, |
| 367 | i: () => {} |
| 368 | }; |
| 369 | assertEquals('function () {}', f.toString()); |
| 370 | assertEquals('function* () {}', g.toString()); |
| 371 | assertEquals('function () {}', obj.h.toString()); |
| 372 | assertEquals('() => {}', obj.i.toString()); |
| 373 | })(); |