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 | (function testSpreadCallsStrict() { |
| 6 | "use strict" |
| 7 | function countArgs() { return arguments.length; } |
| 8 | |
| 9 | // Test this argument |
| 10 | function returnThis() { return this; } |
| 11 | assertEquals(void 0, returnThis(..."test")); |
| 12 | |
| 13 | // Test argument counting with different iterables |
| 14 | assertEquals(0, countArgs(..."")); |
| 15 | assertEquals(4, countArgs(..."test")); |
| 16 | assertEquals(4, countArgs(..."tes", ..."t")); |
| 17 | assertEquals(4, countArgs("t", ..."es", "t")); |
| 18 | assertEquals(4, countArgs("tes", ..."t!!")); |
| 19 | |
| 20 | assertEquals(1, countArgs(...[1])); |
| 21 | assertEquals(2, countArgs(...[1, 2])); |
| 22 | assertEquals(3, countArgs(...[1, 2, 3])); |
| 23 | assertEquals(4, countArgs(...[1, 2, 3, 4])); |
| 24 | assertEquals(5, countArgs(...[1, 2, 3, 4, 5])); |
| 25 | assertEquals(6, countArgs(...[1, 2, 3, 4, 5, 6])); |
| 26 | |
| 27 | assertEquals(1, countArgs(...new Set([1]))); |
| 28 | assertEquals(2, countArgs(...new Set([1, 2]))); |
| 29 | assertEquals(3, countArgs(...new Set([1, 2, 3]))); |
| 30 | assertEquals(4, countArgs(...new Set([1, 2, 3, 4]))); |
| 31 | assertEquals(5, countArgs(...new Set([1, 2, 3, 4, 5]))); |
| 32 | assertEquals(6, countArgs(...new Set([1, 2, 3, 4, 5, 6]))); |
| 33 | |
| 34 | assertEquals(3, countArgs(...(function*(){ yield 1; yield 2; yield 3; })())); |
| 35 | |
| 36 | // Test values |
| 37 | function sum() { |
| 38 | var sum = arguments[0]; |
| 39 | for (var i = 1; i < arguments.length; ++i) { |
| 40 | sum += arguments[i]; |
| 41 | } |
| 42 | return sum; |
| 43 | } |
| 44 | |
| 45 | assertEquals(void 0, sum(..."")); |
| 46 | assertEquals(void 0, sum(...[])); |
| 47 | assertEquals(void 0, sum(...new Set)); |
| 48 | assertEquals(void 0, sum(...(function*() { })())); |
| 49 | |
| 50 | assertEquals("test", sum(..."test")); |
| 51 | assertEquals(10, sum(...[1, 2, 3, 4])); |
| 52 | assertEquals(10, sum(...[1, 2, 3], 4)); |
| 53 | assertEquals(10, sum(1, ...[2, 3], 4)); |
| 54 | assertEquals(10, sum(1, ...[2, 3], ...[4])); |
| 55 | assertEquals(10, sum(1, 2, ...[3, 4])); |
| 56 | assertEquals(10, sum(...new Set([1, 2, 3, 4]))); |
| 57 | assertEquals(10, sum(...(function*() { |
| 58 | yield 1; |
| 59 | yield 2; |
| 60 | yield 3; |
| 61 | yield 4; |
| 62 | })())); |
| 63 | |
| 64 | // nested spreads |
| 65 | function makeArray() { |
| 66 | var result = []; |
| 67 | for (var i = 0; i < arguments.length; ++i) { |
| 68 | result.push(arguments[i]); |
| 69 | } |
| 70 | return result; |
| 71 | } |
| 72 | assertEquals(10, sum(...makeArray(...[1, 2, 3, 4]))); |
| 73 | assertEquals("test!!!", sum(...makeArray(..."test!!!"))); |
| 74 | |
| 75 | // Interleaved spread/unspread args |
| 76 | assertEquals(36, sum(0, ...[1], 2, 3, ...[4, 5], 6, 7, 8)); |
| 77 | assertEquals(45, sum(0, ...[1], 2, 3, ...[4, 5], 6, 7, 8, ...[9])); |
| 78 | |
| 79 | // Methods |
| 80 | var O = { |
| 81 | returnThis: returnThis, |
| 82 | countArgs: countArgs, |
| 83 | sum: sum, |
| 84 | makeArray: makeArray, |
| 85 | |
| 86 | nested: { |
| 87 | returnThis: returnThis, |
| 88 | countArgs: countArgs, |
| 89 | sum: sum, |
| 90 | makeArray: makeArray |
| 91 | } |
| 92 | }; |
| 93 | |
| 94 | // Test this argument |
| 95 | assertEquals(O, O.returnThis(..."test")); |
| 96 | assertEquals(O, O["returnThis"](..."test")); |
| 97 | assertEquals(O.nested, O.nested.returnThis(..."test")); |
| 98 | assertEquals(O.nested, O.nested["returnThis"](..."test")); |
| 99 | |
| 100 | // Test argument counting with different iterables |
| 101 | assertEquals(0, O.countArgs(..."")); |
| 102 | assertEquals(4, O.countArgs(..."test")); |
| 103 | assertEquals(4, O.countArgs(..."tes", ..."t")); |
| 104 | assertEquals(4, O.countArgs("t", ..."es", "t")); |
| 105 | assertEquals(4, O.countArgs("tes", ..."t!!")); |
| 106 | |
| 107 | assertEquals(1, O.countArgs(...[1])); |
| 108 | assertEquals(2, O.countArgs(...[1, 2])); |
| 109 | assertEquals(3, O.countArgs(...[1, 2, 3])); |
| 110 | assertEquals(4, O.countArgs(...[1, 2, 3, 4])); |
| 111 | assertEquals(5, O.countArgs(...[1, 2, 3, 4, 5])); |
| 112 | assertEquals(6, O.countArgs(...[1, 2, 3, 4, 5, 6])); |
| 113 | |
| 114 | assertEquals(1, O.countArgs(...new Set([1]))); |
| 115 | assertEquals(2, O.countArgs(...new Set([1, 2]))); |
| 116 | assertEquals(3, O.countArgs(...new Set([1, 2, 3]))); |
| 117 | assertEquals(4, O.countArgs(...new Set([1, 2, 3, 4]))); |
| 118 | assertEquals(5, O.countArgs(...new Set([1, 2, 3, 4, 5]))); |
| 119 | assertEquals(6, O.countArgs(...new Set([1, 2, 3, 4, 5, 6]))); |
| 120 | |
| 121 | assertEquals(3, O.countArgs( |
| 122 | ...(function*(){ yield 1; yield 2; yield 3; })())); |
| 123 | |
| 124 | // Test values |
| 125 | assertEquals(void 0, O.sum(..."")); |
| 126 | assertEquals(void 0, O.sum(...[])); |
| 127 | assertEquals(void 0, O.sum(...new Set)); |
| 128 | assertEquals(void 0, O.sum(...(function*() { })())); |
| 129 | |
| 130 | assertEquals("test", O.sum(..."test")); |
| 131 | assertEquals(10, O.sum(...[1, 2, 3, 4])); |
| 132 | assertEquals(10, O.sum(...[1, 2, 3], 4)); |
| 133 | assertEquals(10, O.sum(1, ...[2, 3], 4)); |
| 134 | assertEquals(10, O.sum(1, ...[2, 3], ...[4])); |
| 135 | assertEquals(10, O.sum(1, 2, ...[3, 4])); |
| 136 | assertEquals(10, O.sum(...new Set([1, 2, 3, 4]))); |
| 137 | assertEquals(10, O.sum(...(function*() { |
| 138 | yield 1; |
| 139 | yield 2; |
| 140 | yield 3; |
| 141 | yield 4; |
| 142 | })())); |
| 143 | |
| 144 | // nested spreads |
| 145 | assertEquals(10, O.sum(...O.makeArray(...[1, 2, 3, 4]))); |
| 146 | assertEquals("test!!!", O.sum(...O.makeArray(..."test!!!"))); |
| 147 | |
| 148 | // Interleaved spread/unspread args |
| 149 | assertEquals(36, O.sum(0, ...[1], 2, 3, ...[4, 5], 6, 7, 8)); |
| 150 | assertEquals(45, O.sum(0, ...[1], 2, 3, ...[4, 5], 6, 7, 8, ...[9])); |
| 151 | })(); |
| 152 | |
| 153 | |
| 154 | (function testSpreadCallsSloppy() { |
| 155 | // Test this argument |
| 156 | function returnThis() { return this; } |
| 157 | assertEquals(this, returnThis(..."test")); |
| 158 | |
| 159 | function countArgs() { return arguments.length; } |
| 160 | |
| 161 | // Test argument counting with different iterables |
| 162 | assertEquals(0, countArgs(..."")); |
| 163 | assertEquals(4, countArgs(..."test")); |
| 164 | assertEquals(4, countArgs(..."tes", ..."t")); |
| 165 | assertEquals(4, countArgs("t", ..."es", "t")); |
| 166 | assertEquals(4, countArgs("tes", ..."t!!")); |
| 167 | |
| 168 | assertEquals(1, countArgs(...[1])); |
| 169 | assertEquals(2, countArgs(...[1, 2])); |
| 170 | assertEquals(3, countArgs(...[1, 2, 3])); |
| 171 | assertEquals(4, countArgs(...[1, 2, 3, 4])); |
| 172 | assertEquals(5, countArgs(...[1, 2, 3, 4, 5])); |
| 173 | assertEquals(6, countArgs(...[1, 2, 3, 4, 5, 6])); |
| 174 | |
| 175 | assertEquals(1, countArgs(...new Set([1]))); |
| 176 | assertEquals(2, countArgs(...new Set([1, 2]))); |
| 177 | assertEquals(3, countArgs(...new Set([1, 2, 3]))); |
| 178 | assertEquals(4, countArgs(...new Set([1, 2, 3, 4]))); |
| 179 | assertEquals(5, countArgs(...new Set([1, 2, 3, 4, 5]))); |
| 180 | assertEquals(6, countArgs(...new Set([1, 2, 3, 4, 5, 6]))); |
| 181 | |
| 182 | assertEquals(3, countArgs(...(function*(){ |
| 183 | yield 1; |
| 184 | yield 2; |
| 185 | yield 3; |
| 186 | })())); |
| 187 | |
| 188 | // Test values |
| 189 | function sum() { |
| 190 | var sum = arguments[0]; |
| 191 | for (var i = 1; i < arguments.length; ++i) { |
| 192 | sum += arguments[i]; |
| 193 | } |
| 194 | return sum; |
| 195 | } |
| 196 | |
| 197 | assertEquals(void 0, sum(..."")); |
| 198 | assertEquals(void 0, sum(...[])); |
| 199 | assertEquals(void 0, sum(...new Set)); |
| 200 | assertEquals(void 0, sum(...(function*() { })())); |
| 201 | |
| 202 | assertEquals("test", sum(..."test")); |
| 203 | assertEquals(10, sum(...[1, 2, 3, 4])); |
| 204 | assertEquals(10, sum(...[1, 2, 3], 4)); |
| 205 | assertEquals(10, sum(1, ...[2, 3], 4)); |
| 206 | assertEquals(10, sum(1, ...[2, 3], ...[4])); |
| 207 | assertEquals(10, sum(1, 2, ...[3, 4])); |
| 208 | assertEquals(10, sum(...new Set([1, 2, 3, 4]))); |
| 209 | assertEquals(10, sum(...(function*() { |
| 210 | yield 1; |
| 211 | yield 2; |
| 212 | yield 3; |
| 213 | yield 4; |
| 214 | })())); |
| 215 | |
| 216 | // nested spreads |
| 217 | function makeArray() { |
| 218 | var result = []; |
| 219 | for (var i = 0; i < arguments.length; ++i) { |
| 220 | result.push(arguments[i]); |
| 221 | } |
| 222 | return result; |
| 223 | } |
| 224 | assertEquals(10, sum(...makeArray(...[1, 2, 3, 4]))); |
| 225 | assertEquals("test!!!", sum(...makeArray(..."test!!!"))); |
| 226 | |
| 227 | // Interleaved spread/unspread args |
| 228 | assertEquals(36, sum(0, ...[1], 2, 3, ...[4, 5], 6, 7, 8)); |
| 229 | assertEquals(45, sum(0, ...[1], 2, 3, ...[4, 5], 6, 7, 8, ...[9])); |
| 230 | |
| 231 | // Methods |
| 232 | var O = { |
| 233 | returnThis: returnThis, |
| 234 | countArgs: countArgs, |
| 235 | sum: sum, |
| 236 | makeArray: makeArray, |
| 237 | |
| 238 | nested: { |
| 239 | returnThis: returnThis, |
| 240 | countArgs: countArgs, |
| 241 | sum: sum, |
| 242 | makeArray: makeArray |
| 243 | } |
| 244 | }; |
| 245 | |
| 246 | // Test this argument |
| 247 | assertEquals(O, O.returnThis(..."test")); |
| 248 | assertEquals(O, O["returnThis"](..."test")); |
| 249 | assertEquals(O.nested, O.nested.returnThis(..."test")); |
| 250 | assertEquals(O.nested, O.nested["returnThis"](..."test")); |
| 251 | |
| 252 | // Test argument counting with different iterables |
| 253 | assertEquals(0, O.countArgs(..."")); |
| 254 | assertEquals(4, O.countArgs(..."test")); |
| 255 | assertEquals(4, O.countArgs(..."tes", ..."t")); |
| 256 | assertEquals(4, O.countArgs("t", ..."es", "t")); |
| 257 | assertEquals(4, O.countArgs("tes", ..."t!!")); |
| 258 | |
| 259 | assertEquals(1, O.countArgs(...[1])); |
| 260 | assertEquals(2, O.countArgs(...[1, 2])); |
| 261 | assertEquals(3, O.countArgs(...[1, 2, 3])); |
| 262 | assertEquals(4, O.countArgs(...[1, 2, 3, 4])); |
| 263 | assertEquals(5, O.countArgs(...[1, 2, 3, 4, 5])); |
| 264 | assertEquals(6, O.countArgs(...[1, 2, 3, 4, 5, 6])); |
| 265 | |
| 266 | assertEquals(1, O.countArgs(...new Set([1]))); |
| 267 | assertEquals(2, O.countArgs(...new Set([1, 2]))); |
| 268 | assertEquals(3, O.countArgs(...new Set([1, 2, 3]))); |
| 269 | assertEquals(4, O.countArgs(...new Set([1, 2, 3, 4]))); |
| 270 | assertEquals(5, O.countArgs(...new Set([1, 2, 3, 4, 5]))); |
| 271 | assertEquals(6, O.countArgs(...new Set([1, 2, 3, 4, 5, 6]))); |
| 272 | |
| 273 | assertEquals(3, O.countArgs(...(function*(){ |
| 274 | yield 1; |
| 275 | yield 2; |
| 276 | yield 3; |
| 277 | })())); |
| 278 | |
| 279 | // Test values |
| 280 | assertEquals(void 0, O.sum(..."")); |
| 281 | assertEquals(void 0, O.sum(...[])); |
| 282 | assertEquals(void 0, O.sum(...new Set)); |
| 283 | assertEquals(void 0, O.sum(...(function*() { })())); |
| 284 | |
| 285 | assertEquals("test", O.sum(..."test")); |
| 286 | assertEquals(10, O.sum(...[1, 2, 3, 4])); |
| 287 | assertEquals(10, O.sum(...[1, 2, 3], 4)); |
| 288 | assertEquals(10, O.sum(1, ...[2, 3], 4)); |
| 289 | assertEquals(10, O.sum(1, ...[2, 3], ...[4])); |
| 290 | assertEquals(10, O.sum(1, 2, ...[3, 4])); |
| 291 | assertEquals(10, O.sum(...new Set([1, 2, 3, 4]))); |
| 292 | assertEquals(10, O.sum(...(function*() { |
| 293 | yield 1; |
| 294 | yield 2; |
| 295 | yield 3; |
| 296 | yield 4; |
| 297 | })())); |
| 298 | |
| 299 | // nested spreads |
| 300 | assertEquals(10, O.sum(...O.makeArray(...[1, 2, 3, 4]))); |
| 301 | assertEquals("test!!!", O.sum(...O.makeArray(..."test!!!"))); |
| 302 | |
| 303 | // Interleaved spread/unspread args |
| 304 | assertEquals(36, O.sum(0, ...[1], 2, 3, ...[4, 5], 6, 7, 8)); |
| 305 | assertEquals(45, O.sum(0, ...[1], 2, 3, ...[4, 5], 6, 7, 8, ...[9])); |
| 306 | })(); |
| 307 | |
| 308 | |
| 309 | (function testSpreadEvaluationOrder() { |
| 310 | "use strict"; |
| 311 | var log = ""; |
| 312 | function* gen() { log += "X"; yield 0; log += "Y"; } |
| 313 | function a() { log += "A"; } |
| 314 | function b() { log += "B"; return gen(); } |
| 315 | function* c() { log += 'C1'; yield 1; log += 'C2'; } |
| 316 | function d() { log += "D"; } |
| 317 | function e() { log += "E"; } |
| 318 | function fn() { |
| 319 | var args = []; |
| 320 | for (var i = 0; i < arguments.length; ++i) args.push(arguments[i]); |
| 321 | return args; |
| 322 | } |
| 323 | |
| 324 | var result = fn(a(), ...b(), d()); |
| 325 | assertEquals([undefined, 0, undefined], result); |
| 326 | assertEquals("ABXYD", log); |
| 327 | |
| 328 | log = ""; |
| 329 | result = fn(...b(), d()); |
| 330 | assertEquals([0, undefined], result); |
| 331 | assertEquals("BXYD", log); |
| 332 | |
| 333 | log = ""; |
| 334 | result = fn(a(), ...b()); |
| 335 | assertEquals([undefined, 0], result); |
| 336 | assertEquals("ABXY", log); |
| 337 | |
| 338 | log = ""; |
| 339 | result = fn(a(), ...b(), ...c(), d(), e()); |
| 340 | assertEquals([undefined, 0, 1, undefined, undefined], result); |
| 341 | assertEquals("ABXYC1C2DE", log); |
| 342 | |
| 343 | log = ""; |
| 344 | result = fn(a(), ...b(), ...c(), d(), e(), ...b(), ...c()); |
| 345 | assertEquals([undefined, 0, 1, undefined, undefined, 0, 1], result); |
| 346 | assertEquals("ABXYC1C2DEBXYC1C2", log); |
| 347 | })(); |
| 348 | |
| 349 | |
| 350 | (function testCustomArrayPrototypeIterator() { |
| 351 | var origIterator = |
| 352 | Object.getOwnPropertyDescriptor(Array.prototype, Symbol.iterator); |
| 353 | Object.defineProperty(Array.prototype, Symbol.iterator, { |
| 354 | value: function*() { |
| 355 | yield 1; |
| 356 | yield 2; |
| 357 | yield 3; |
| 358 | }, |
| 359 | configurable: true |
| 360 | }); |
| 361 | function returnCountStrict() { 'use strict'; return arguments.length; } |
| 362 | function returnCountSloppy() { return arguments.length; } |
| 363 | |
| 364 | assertEquals(3, returnCountStrict(...[1])); |
| 365 | assertEquals(4, returnCountStrict(1, ...[2])); |
| 366 | assertEquals(5, returnCountStrict(1, ...[2], 3)); |
| 367 | assertEquals(3, returnCountSloppy(...[1])); |
| 368 | assertEquals(4, returnCountSloppy(1, ...[2])); |
| 369 | assertEquals(5, returnCountSloppy(1, ...[2], 3)); |
| 370 | |
| 371 | Object.defineProperty(Array.prototype, Symbol.iterator, origIterator); |
| 372 | })(); |