Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 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 | // Largely ported from |
| 6 | // https://github.com/tc39/Array.prototype.includes/tree/master/test |
| 7 | // using https://www.npmjs.org/package/test262-to-mjsunit with further edits |
| 8 | |
| 9 | |
| 10 | // Array.prototype.includes sees a new element added by a getter that is hit |
| 11 | // during iteration |
| 12 | (function() { |
| 13 | var arrayLike = { |
| 14 | length: 5, |
| 15 | 0: "a", |
| 16 | |
| 17 | get 1() { |
| 18 | this[2] = "c"; |
| 19 | return "b"; |
| 20 | } |
| 21 | }; |
| 22 | |
| 23 | assertTrue(Array.prototype.includes.call(arrayLike, "c")); |
| 24 | })(); |
| 25 | |
| 26 | |
| 27 | // Array.prototype.includes works on array-like objects |
| 28 | (function() { |
| 29 | var arrayLike1 = { |
| 30 | length: 5, |
| 31 | 0: "a", |
| 32 | 1: "b" |
| 33 | }; |
| 34 | |
| 35 | assertTrue(Array.prototype.includes.call(arrayLike1, "a")); |
| 36 | assertFalse(Array.prototype.includes.call(arrayLike1, "c")); |
| 37 | |
| 38 | var arrayLike2 = { |
| 39 | length: 2, |
| 40 | 0: "a", |
| 41 | 1: "b", |
| 42 | 2: "c" |
| 43 | }; |
| 44 | |
| 45 | assertTrue(Array.prototype.includes.call(arrayLike2, "b")); |
| 46 | assertFalse(Array.prototype.includes.call(arrayLike2, "c")); |
| 47 | })(); |
| 48 | |
| 49 | |
| 50 | // Array.prototype.includes should fail if used on a null or undefined this |
| 51 | (function() { |
| 52 | assertThrows(function() { |
| 53 | Array.prototype.includes.call(null, "a"); |
| 54 | }, TypeError); |
| 55 | |
| 56 | assertThrows(function() { |
| 57 | Array.prototype.includes.call(undefined, "a"); |
| 58 | }, TypeError); |
| 59 | })(); |
| 60 | |
| 61 | |
| 62 | // Array.prototype.includes should terminate if getting an index throws an |
| 63 | // exception |
| 64 | (function() { |
| 65 | function Test262Error() {} |
| 66 | |
| 67 | var trappedZero = { |
| 68 | length: 2, |
| 69 | |
| 70 | get 0() { |
| 71 | throw new Test262Error(); |
| 72 | }, |
| 73 | |
| 74 | get 1() { |
| 75 | assertUnreachable("Should not try to get the first element"); |
| 76 | } |
| 77 | }; |
| 78 | |
| 79 | assertThrows(function() { |
| 80 | Array.prototype.includes.call(trappedZero, "a"); |
| 81 | }, Test262Error); |
| 82 | })(); |
| 83 | |
| 84 | |
| 85 | // Array.prototype.includes should terminate if ToNumber ends up being called on |
| 86 | // a symbol fromIndex |
| 87 | (function() { |
| 88 | var trappedZero = { |
| 89 | length: 1, |
| 90 | |
| 91 | get 0() { |
| 92 | assertUnreachable("Should not try to get the zeroth element"); |
| 93 | } |
| 94 | }; |
| 95 | |
| 96 | assertThrows(function() { |
| 97 | Array.prototype.includes.call(trappedZero, "a", Symbol()); |
| 98 | }, TypeError); |
| 99 | })(); |
| 100 | |
| 101 | |
| 102 | // Array.prototype.includes should terminate if an exception occurs converting |
| 103 | // the fromIndex to a number |
| 104 | (function() { |
| 105 | function Test262Error() {} |
| 106 | |
| 107 | var fromIndex = { |
| 108 | valueOf: function() { |
| 109 | throw new Test262Error(); |
| 110 | } |
| 111 | }; |
| 112 | |
| 113 | var trappedZero = { |
| 114 | length: 1, |
| 115 | |
| 116 | get 0() { |
| 117 | assertUnreachable("Should not try to get the zeroth element"); |
| 118 | } |
| 119 | }; |
| 120 | |
| 121 | assertThrows(function() { |
| 122 | Array.prototype.includes.call(trappedZero, "a", fromIndex); |
| 123 | }, Test262Error); |
| 124 | })(); |
| 125 | |
| 126 | |
| 127 | // Array.prototype.includes should terminate if an exception occurs getting the |
| 128 | // length |
| 129 | (function() { |
| 130 | function Test262Error() {} |
| 131 | |
| 132 | var fromIndexTrap = { |
| 133 | valueOf: function() { |
| 134 | assertUnreachable("Should not try to call ToInteger on valueOf"); |
| 135 | } |
| 136 | }; |
| 137 | |
| 138 | var throwingLength = { |
| 139 | get length() { |
| 140 | throw new Test262Error(); |
| 141 | }, |
| 142 | |
| 143 | get 0() { |
| 144 | assertUnreachable("Should not try to get the zeroth element"); |
| 145 | } |
| 146 | }; |
| 147 | |
| 148 | assertThrows(function() { |
| 149 | Array.prototype.includes.call(throwingLength, "a", fromIndexTrap); |
| 150 | }, Test262Error); |
| 151 | })(); |
| 152 | |
| 153 | |
| 154 | // Array.prototype.includes should terminate if ToLength ends up being called on |
| 155 | // a symbol length |
| 156 | (function() { |
| 157 | var fromIndexTrap = { |
| 158 | valueOf: function() { |
| 159 | assertUnreachable("Should not try to call ToInteger on valueOf"); |
| 160 | } |
| 161 | }; |
| 162 | |
| 163 | var badLength = { |
| 164 | length: Symbol(), |
| 165 | |
| 166 | get 0() { |
| 167 | assertUnreachable("Should not try to get the zeroth element"); |
| 168 | } |
| 169 | }; |
| 170 | |
| 171 | assertThrows(function() { |
| 172 | Array.prototype.includes.call(badLength, "a", fromIndexTrap); |
| 173 | }, TypeError); |
| 174 | })(); |
| 175 | |
| 176 | |
| 177 | // Array.prototype.includes should terminate if an exception occurs converting |
| 178 | // the length to a number |
| 179 | (function() { |
| 180 | function Test262Error() {} |
| 181 | |
| 182 | var fromIndexTrap = { |
| 183 | valueOf: function() { |
| 184 | assertUnreachable("Should not try to call ToInteger on valueOf"); |
| 185 | } |
| 186 | }; |
| 187 | |
| 188 | var badLength = { |
| 189 | length: { |
| 190 | valueOf: function() { |
| 191 | throw new Test262Error(); |
| 192 | } |
| 193 | }, |
| 194 | |
| 195 | get 0() { |
| 196 | assertUnreachable("Should not try to get the zeroth element"); |
| 197 | } |
| 198 | }; |
| 199 | |
| 200 | assertThrows(function() { |
| 201 | Array.prototype.includes.call(badLength, "a", fromIndexTrap); |
| 202 | }, Test262Error); |
| 203 | })(); |
| 204 | |
| 205 | |
| 206 | // Array.prototype.includes should search the whole array, as the optional |
| 207 | // second argument fromIndex defaults to 0 |
| 208 | (function() { |
| 209 | assertTrue([10, 11].includes(10)); |
| 210 | assertTrue([10, 11].includes(11)); |
| 211 | |
| 212 | var arrayLike = { |
| 213 | length: 2, |
| 214 | |
| 215 | get 0() { |
| 216 | return "1"; |
| 217 | }, |
| 218 | |
| 219 | get 1() { |
| 220 | return "2"; |
| 221 | } |
| 222 | }; |
| 223 | |
| 224 | assertTrue(Array.prototype.includes.call(arrayLike, "1")); |
| 225 | assertTrue(Array.prototype.includes.call(arrayLike, "2")); |
| 226 | })(); |
| 227 | |
| 228 | |
| 229 | // Array.prototype.includes returns false if fromIndex is greater or equal to |
| 230 | // the length of the array |
| 231 | (function() { |
| 232 | assertFalse([1, 2].includes(2, 3)); |
| 233 | assertFalse([1, 2].includes(2, 2)); |
| 234 | |
| 235 | var arrayLikeWithTrap = { |
| 236 | length: 2, |
| 237 | |
| 238 | get 0() { |
| 239 | assertUnreachable("Getter for 0 was called"); |
| 240 | }, |
| 241 | |
| 242 | get 1() { |
| 243 | assertUnreachable("Getter for 1 was called"); |
| 244 | } |
| 245 | }; |
| 246 | |
| 247 | assertFalse(Array.prototype.includes.call(arrayLikeWithTrap, "c", 2)); |
| 248 | assertFalse(Array.prototype.includes.call(arrayLikeWithTrap, "c", 3)); |
| 249 | })(); |
| 250 | |
| 251 | |
| 252 | // Array.prototype.includes searches the whole array if the computed index from |
| 253 | // the given negative fromIndex argument is less than 0 |
| 254 | (function() { |
| 255 | assertTrue([1, 3].includes(1, -4)); |
| 256 | assertTrue([1, 3].includes(3, -4)); |
| 257 | |
| 258 | var arrayLike = { |
| 259 | length: 2, |
| 260 | 0: "a", |
| 261 | |
| 262 | get 1() { |
| 263 | return "b"; |
| 264 | }, |
| 265 | |
| 266 | get "-1"() { |
| 267 | assertUnreachable("Should not try to get the element at index -1"); |
| 268 | } |
| 269 | }; |
| 270 | |
| 271 | assertTrue(Array.prototype.includes.call(arrayLike, "a", -4)); |
| 272 | assertTrue(Array.prototype.includes.call(arrayLike, "b", -4)); |
| 273 | })(); |
| 274 | |
| 275 | |
| 276 | // Array.prototype.includes should use a negative value as the offset from the |
| 277 | // end of the array to compute fromIndex |
| 278 | (function() { |
| 279 | assertTrue([12, 13].includes(13, -1)); |
| 280 | assertFalse([12, 13].includes(12, -1)); |
| 281 | assertTrue([12, 13].includes(12, -2)); |
| 282 | |
| 283 | var arrayLike = { |
| 284 | length: 2, |
| 285 | |
| 286 | get 0() { |
| 287 | return "a"; |
| 288 | }, |
| 289 | |
| 290 | get 1() { |
| 291 | return "b"; |
| 292 | } |
| 293 | }; |
| 294 | |
| 295 | assertTrue(Array.prototype.includes.call(arrayLike, "b", -1)); |
| 296 | assertFalse(Array.prototype.includes.call(arrayLike, "a", -1)); |
| 297 | assertTrue(Array.prototype.includes.call(arrayLike, "a", -2)); |
| 298 | })(); |
| 299 | |
| 300 | |
| 301 | // Array.prototype.includes converts its fromIndex parameter to an integer |
| 302 | (function() { |
| 303 | assertFalse(["a", "b"].includes("a", 2.3)); |
| 304 | |
| 305 | var arrayLikeWithTraps = { |
| 306 | length: 2, |
| 307 | |
| 308 | get 0() { |
| 309 | assertUnreachable("Getter for 0 was called"); |
| 310 | }, |
| 311 | |
| 312 | get 1() { |
| 313 | assertUnreachable("Getter for 1 was called"); |
| 314 | } |
| 315 | }; |
| 316 | |
| 317 | assertFalse(Array.prototype.includes.call(arrayLikeWithTraps, "c", 2.1)); |
| 318 | assertFalse(Array.prototype.includes.call(arrayLikeWithTraps, "c", +Infinity)); |
| 319 | assertTrue(["a", "b", "c"].includes("a", -Infinity)); |
| 320 | assertTrue(["a", "b", "c"].includes("c", 2.9)); |
| 321 | assertTrue(["a", "b", "c"].includes("c", NaN)); |
| 322 | |
| 323 | var arrayLikeWithTrapAfterZero = { |
| 324 | length: 2, |
| 325 | |
| 326 | get 0() { |
| 327 | return "a"; |
| 328 | }, |
| 329 | |
| 330 | get 1() { |
| 331 | assertUnreachable("Getter for 1 was called"); |
| 332 | } |
| 333 | }; |
| 334 | |
| 335 | assertTrue(Array.prototype.includes.call(arrayLikeWithTrapAfterZero, "a", NaN)); |
| 336 | |
| 337 | var numberLike = { |
| 338 | valueOf: function() { |
| 339 | return 2; |
| 340 | } |
| 341 | }; |
| 342 | |
| 343 | assertFalse(["a", "b", "c"].includes("a", numberLike)); |
| 344 | assertFalse(["a", "b", "c"].includes("a", "2")); |
| 345 | assertTrue(["a", "b", "c"].includes("c", numberLike)); |
| 346 | assertTrue(["a", "b", "c"].includes("c", "2")); |
| 347 | })(); |
| 348 | |
| 349 | |
| 350 | // Array.prototype.includes should have length 1 |
| 351 | (function() { |
| 352 | assertEquals(1, Array.prototype.includes.length); |
| 353 | })(); |
| 354 | |
| 355 | |
| 356 | // Array.prototype.includes should have name property with value 'includes' |
| 357 | (function() { |
| 358 | assertEquals("includes", Array.prototype.includes.name); |
| 359 | })(); |
| 360 | |
| 361 | |
| 362 | // !!! Test failed to convert: |
| 363 | // Cannot convert tests with includes. |
| 364 | // !!! |
| 365 | |
| 366 | |
| 367 | // Array.prototype.includes does not skip holes; if the array has a prototype it |
| 368 | // gets from that |
| 369 | (function() { |
| 370 | var holesEverywhere = [,,,]; |
| 371 | |
| 372 | holesEverywhere.__proto__ = { |
| 373 | 1: "a" |
| 374 | }; |
| 375 | |
| 376 | holesEverywhere.__proto__.__proto__ = Array.prototype; |
| 377 | assertTrue(holesEverywhere.includes("a")); |
| 378 | var oneHole = ["a", "b",, "d"]; |
| 379 | |
| 380 | oneHole.__proto__ = { |
| 381 | get 2() { |
| 382 | return "c"; |
| 383 | } |
| 384 | }; |
| 385 | |
| 386 | assertTrue(Array.prototype.includes.call(oneHole, "c")); |
| 387 | })(); |
| 388 | |
| 389 | |
| 390 | // Array.prototype.includes does not skip holes; instead it treates them as |
| 391 | // undefined |
| 392 | (function() { |
| 393 | assertTrue([,,,].includes(undefined)); |
| 394 | assertTrue(["a", "b",, "d"].includes(undefined)); |
| 395 | })(); |
| 396 | |
| 397 | |
| 398 | // Array.prototype.includes gets length property from the prototype if it's |
| 399 | // available |
| 400 | (function() { |
| 401 | var proto = { |
| 402 | length: 1 |
| 403 | }; |
| 404 | |
| 405 | var arrayLike = Object.create(proto); |
| 406 | arrayLike[0] = "a"; |
| 407 | |
| 408 | Object.defineProperty(arrayLike, "1", { |
| 409 | get: function() { |
| 410 | assertUnreachable("Getter for 1 was called"); |
| 411 | } |
| 412 | }); |
| 413 | |
| 414 | assertTrue(Array.prototype.includes.call(arrayLike, "a")); |
| 415 | })(); |
| 416 | |
| 417 | |
| 418 | // Array.prototype.includes treats a missing length property as zero |
| 419 | (function() { |
| 420 | var arrayLikeWithTraps = { |
| 421 | get 0() { |
| 422 | assertUnreachable("Getter for 0 was called"); |
| 423 | }, |
| 424 | |
| 425 | get 1() { |
| 426 | assertUnreachable("Getter for 1 was called"); |
| 427 | } |
| 428 | }; |
| 429 | |
| 430 | assertFalse(Array.prototype.includes.call(arrayLikeWithTraps, "a")); |
| 431 | })(); |
| 432 | |
| 433 | |
| 434 | // Array.prototype.includes should always return false on negative-length |
| 435 | // objects |
| 436 | (function() { |
| 437 | assertFalse(Array.prototype.includes.call({ |
| 438 | length: -1 |
| 439 | }, 2)); |
| 440 | |
| 441 | assertFalse(Array.prototype.includes.call({ |
| 442 | length: -2 |
| 443 | })); |
| 444 | |
| 445 | assertFalse(Array.prototype.includes.call({ |
| 446 | length: -Infinity |
| 447 | }, undefined)); |
| 448 | |
| 449 | assertFalse(Array.prototype.includes.call({ |
| 450 | length: -Math.pow(2, 53) |
| 451 | }, NaN)); |
| 452 | |
| 453 | assertFalse(Array.prototype.includes.call({ |
| 454 | length: -1, |
| 455 | "-1": 2 |
| 456 | }, 2)); |
| 457 | |
| 458 | assertFalse(Array.prototype.includes.call({ |
| 459 | length: -3, |
| 460 | "-1": 2 |
| 461 | }, 2)); |
| 462 | |
| 463 | assertFalse(Array.prototype.includes.call({ |
| 464 | length: -Infinity, |
| 465 | "-1": 2 |
| 466 | }, 2)); |
| 467 | |
| 468 | var arrayLikeWithTrap = { |
| 469 | length: -1, |
| 470 | |
| 471 | get 0() { |
| 472 | assertUnreachable("Getter for 0 was called"); |
| 473 | } |
| 474 | }; |
| 475 | |
| 476 | assertFalse(Array.prototype.includes.call(arrayLikeWithTrap, 2)); |
| 477 | })(); |
| 478 | |
| 479 | |
| 480 | // Array.prototype.includes should clamp positive lengths to 2^53 - 1 |
| 481 | (function() { |
| 482 | var fromIndexForLargeIndexTests = 9007199254740990; |
| 483 | |
| 484 | assertFalse(Array.prototype.includes.call({ |
| 485 | length: 1 |
| 486 | }, 2)); |
| 487 | |
| 488 | assertTrue(Array.prototype.includes.call({ |
| 489 | length: 1, |
| 490 | 0: "a" |
| 491 | }, "a")); |
| 492 | |
| 493 | assertTrue(Array.prototype.includes.call({ |
| 494 | length: +Infinity, |
| 495 | 0: "a" |
| 496 | }, "a")); |
| 497 | |
| 498 | assertFalse(Array.prototype.includes.call({ |
| 499 | length: +Infinity |
| 500 | }, "a", fromIndexForLargeIndexTests)); |
| 501 | |
| 502 | var arrayLikeWithTrap = { |
| 503 | length: +Infinity, |
| 504 | |
| 505 | get 9007199254740992() { |
| 506 | assertUnreachable("Getter for 9007199254740992 (i.e. 2^53) was called"); |
| 507 | }, |
| 508 | |
| 509 | "9007199254740993": "a" |
| 510 | }; |
| 511 | |
| 512 | assertFalse( |
| 513 | Array.prototype.includes.call(arrayLikeWithTrap, "a", fromIndexForLargeIndexTests) |
| 514 | ); |
| 515 | |
| 516 | var arrayLikeWithTooBigLength = { |
| 517 | length: 9007199254740996, |
| 518 | "9007199254740992": "a" |
| 519 | }; |
| 520 | |
| 521 | assertFalse( |
| 522 | Array.prototype.includes.call(arrayLikeWithTooBigLength, "a", fromIndexForLargeIndexTests) |
| 523 | ); |
| 524 | })(); |
| 525 | |
| 526 | |
| 527 | // Array.prototype.includes should always return false on zero-length objects |
| 528 | (function() { |
| 529 | assertFalse([].includes(2)); |
| 530 | assertFalse([].includes()); |
| 531 | assertFalse([].includes(undefined)); |
| 532 | assertFalse([].includes(NaN)); |
| 533 | |
| 534 | assertFalse(Array.prototype.includes.call({ |
| 535 | length: 0 |
| 536 | }, 2)); |
| 537 | |
| 538 | assertFalse(Array.prototype.includes.call({ |
| 539 | length: 0 |
| 540 | })); |
| 541 | |
| 542 | assertFalse(Array.prototype.includes.call({ |
| 543 | length: 0 |
| 544 | }, undefined)); |
| 545 | |
| 546 | assertFalse(Array.prototype.includes.call({ |
| 547 | length: 0 |
| 548 | }, NaN)); |
| 549 | |
| 550 | assertFalse(Array.prototype.includes.call({ |
| 551 | length: 0, |
| 552 | 0: 2 |
| 553 | }, 2)); |
| 554 | |
| 555 | assertFalse(Array.prototype.includes.call({ |
| 556 | length: 0, |
| 557 | 0: undefined |
| 558 | })); |
| 559 | |
| 560 | assertFalse(Array.prototype.includes.call({ |
| 561 | length: 0, |
| 562 | 0: undefined |
| 563 | }, undefined)); |
| 564 | |
| 565 | assertFalse(Array.prototype.includes.call({ |
| 566 | length: 0, |
| 567 | 0: NaN |
| 568 | }, NaN)); |
| 569 | |
| 570 | var arrayLikeWithTrap = { |
| 571 | length: 0, |
| 572 | |
| 573 | get 0() { |
| 574 | assertUnreachable("Getter for 0 was called"); |
| 575 | } |
| 576 | }; |
| 577 | |
| 578 | Array.prototype.includes.call(arrayLikeWithTrap); |
| 579 | |
| 580 | var trappedFromIndex = { |
| 581 | valueOf: function() { |
| 582 | assertUnreachable("Should not try to convert fromIndex to a number on a zero-length array"); |
| 583 | } |
| 584 | }; |
| 585 | |
| 586 | [].includes("a", trappedFromIndex); |
| 587 | |
| 588 | Array.prototype.includes.call({ |
| 589 | length: 0 |
| 590 | }, trappedFromIndex); |
| 591 | })(); |
| 592 | |
| 593 | |
| 594 | // Array.prototype.includes works on objects |
| 595 | (function() { |
| 596 | assertFalse(["a", "b", "c"].includes({})); |
| 597 | assertFalse([{}, {}].includes({})); |
| 598 | var obj = {}; |
| 599 | assertTrue([obj].includes(obj)); |
| 600 | assertFalse([obj].includes(obj, 1)); |
| 601 | assertTrue([obj, obj].includes(obj, 1)); |
| 602 | |
| 603 | var stringyObject = { |
| 604 | toString: function() { |
| 605 | return "a"; |
| 606 | } |
| 607 | }; |
| 608 | |
| 609 | assertFalse(["a", "b", obj].includes(stringyObject)); |
| 610 | })(); |
| 611 | |
| 612 | |
| 613 | // Array.prototype.includes does not see an element removed by a getter that is |
| 614 | // hit during iteration |
| 615 | (function() { |
| 616 | var arrayLike = { |
| 617 | length: 5, |
| 618 | 0: "a", |
| 619 | |
| 620 | get 1() { |
| 621 | delete this[2]; |
| 622 | return "b"; |
| 623 | }, |
| 624 | |
| 625 | 2: "c" |
| 626 | }; |
| 627 | |
| 628 | assertFalse(Array.prototype.includes.call(arrayLike, "c")); |
| 629 | })(); |
| 630 | |
| 631 | |
| 632 | // Array.prototype.includes should use the SameValueZero algorithm to compare |
| 633 | (function() { |
| 634 | assertTrue([1, 2, 3].includes(2)); |
| 635 | assertFalse([1, 2, 3].includes(4)); |
| 636 | assertTrue([1, 2, NaN].includes(NaN)); |
| 637 | assertTrue([1, 2, -0].includes(+0)); |
| 638 | assertTrue([1, 2, -0].includes(-0)); |
| 639 | assertTrue([1, 2, +0].includes(-0)); |
| 640 | assertTrue([1, 2, +0].includes(+0)); |
| 641 | assertFalse([1, 2, -Infinity].includes(+Infinity)); |
| 642 | assertTrue([1, 2, -Infinity].includes(-Infinity)); |
| 643 | assertFalse([1, 2, +Infinity].includes(-Infinity)); |
| 644 | assertTrue([1, 2, +Infinity].includes(+Infinity)); |
| 645 | })(); |
| 646 | |
| 647 | |
| 648 | // Array.prototype.includes stops once it hits the length of an array-like, even |
| 649 | // if there are more after |
| 650 | (function() { |
| 651 | var arrayLike = { |
| 652 | length: 2, |
| 653 | 0: "a", |
| 654 | 1: "b", |
| 655 | |
| 656 | get 2() { |
| 657 | assertUnreachable("Should not try to get the second element"); |
| 658 | } |
| 659 | }; |
| 660 | |
| 661 | assertFalse(Array.prototype.includes.call(arrayLike, "c")); |
| 662 | })(); |
| 663 | |
| 664 | |
| 665 | // Array.prototype.includes works on typed arrays |
| 666 | (function() { |
| 667 | assertTrue(Array.prototype.includes.call(new Uint8Array([1, 2, 3]), 2)); |
| 668 | |
| 669 | assertTrue( |
| 670 | Array.prototype.includes.call(new Float32Array([2.5, 3.14, Math.PI]), 3.1415927410125732) |
| 671 | ); |
| 672 | |
| 673 | assertFalse(Array.prototype.includes.call(new Uint8Array([1, 2, 3]), 4)); |
| 674 | assertFalse(Array.prototype.includes.call(new Uint8Array([1, 2, 3]), 2, 2)); |
| 675 | })(); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 676 | |
| 677 | |
| 678 | (function testUnscopable() { |
| 679 | assertTrue(Array.prototype[Symbol.unscopables].includes); |
| 680 | })(); |