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. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 4 | |
| 5 | (function TestObjectLiteralPattern() { |
| 6 | var { x : x, y : y, get, set } = { x : 1, y : 2, get: 3, set: 4 }; |
| 7 | assertEquals(1, x); |
| 8 | assertEquals(2, y); |
| 9 | assertEquals(3, get); |
| 10 | assertEquals(4, set); |
| 11 | |
| 12 | var {z} = { z : 3 }; |
| 13 | assertEquals(3, z); |
| 14 | |
| 15 | |
| 16 | var sum = 0; |
| 17 | for (var {z} = { z : 3 }; z != 0; z--) { |
| 18 | sum += z; |
| 19 | } |
| 20 | assertEquals(6, sum); |
| 21 | |
| 22 | |
| 23 | var log = []; |
| 24 | var o = { |
| 25 | get x() { |
| 26 | log.push("x"); |
| 27 | return 0; |
| 28 | }, |
| 29 | get y() { |
| 30 | log.push("y"); |
| 31 | return { |
| 32 | get z() { log.push("z"); return 1; } |
| 33 | } |
| 34 | } |
| 35 | }; |
| 36 | var { x : x0, y : { z : z1 }, x : x1 } = o; |
| 37 | assertSame(0, x0); |
| 38 | assertSame(1, z1); |
| 39 | assertSame(0, x1); |
| 40 | assertArrayEquals(["x", "y", "z", "x"], log); |
| 41 | }()); |
| 42 | |
| 43 | |
| 44 | (function TestObjectLiteralPatternInitializers() { |
| 45 | var { x : x, y : y = 2 } = { x : 1 }; |
| 46 | assertEquals(1, x); |
| 47 | assertEquals(2, y); |
| 48 | |
| 49 | var {z = 3} = {}; |
| 50 | assertEquals(3, z); |
| 51 | |
| 52 | var sum = 0; |
| 53 | for (var {z = 3} = {}; z != 0; z--) { |
| 54 | sum += z; |
| 55 | } |
| 56 | assertEquals(6, sum); |
| 57 | |
| 58 | var log = []; |
| 59 | var o = { |
| 60 | get x() { |
| 61 | log.push("x"); |
| 62 | return undefined; |
| 63 | }, |
| 64 | get y() { |
| 65 | log.push("y"); |
| 66 | return { |
| 67 | get z() { log.push("z"); return undefined; } |
| 68 | } |
| 69 | } |
| 70 | }; |
| 71 | var { x : x0 = 0, y : { z : z1 = 1}, x : x1 = 0} = o; |
| 72 | assertSame(0, x0); |
| 73 | assertSame(1, z1); |
| 74 | assertSame(0, x1); |
| 75 | assertArrayEquals(["x", "y", "z", "x"], log); |
| 76 | }()); |
| 77 | |
| 78 | |
| 79 | (function TestObjectLiteralPatternLexicalInitializers() { |
| 80 | 'use strict'; |
| 81 | let { x : x, y : y = 2 } = { x : 1 }; |
| 82 | assertEquals(1, x); |
| 83 | assertEquals(2, y); |
| 84 | |
| 85 | let {z = 3} = {}; |
| 86 | assertEquals(3, z); |
| 87 | |
| 88 | let log = []; |
| 89 | let o = { |
| 90 | get x() { |
| 91 | log.push("x"); |
| 92 | return undefined; |
| 93 | }, |
| 94 | get y() { |
| 95 | log.push("y"); |
| 96 | return { |
| 97 | get z() { log.push("z"); return undefined; } |
| 98 | } |
| 99 | } |
| 100 | }; |
| 101 | |
| 102 | let { x : x0 = 0, y : { z : z1 = 1 }, x : x1 = 5} = o; |
| 103 | assertSame(0, x0); |
| 104 | assertSame(1, z1); |
| 105 | assertSame(5, x1); |
| 106 | assertArrayEquals(["x", "y", "z", "x"], log); |
| 107 | |
| 108 | let sum = 0; |
| 109 | for (let {x = 0, z = 3} = {}; z != 0; z--) { |
| 110 | assertEquals(0, x); |
| 111 | sum += z; |
| 112 | } |
| 113 | assertEquals(6, sum); |
| 114 | }()); |
| 115 | |
| 116 | |
| 117 | (function TestObjectLiteralPatternLexical() { |
| 118 | 'use strict'; |
| 119 | let { x : x, y : y } = { x : 1, y : 2 }; |
| 120 | assertEquals(1, x); |
| 121 | assertEquals(2, y); |
| 122 | |
| 123 | let {z} = { z : 3 }; |
| 124 | assertEquals(3, z); |
| 125 | |
| 126 | let log = []; |
| 127 | let o = { |
| 128 | get x() { |
| 129 | log.push("x"); |
| 130 | return 0; |
| 131 | }, |
| 132 | get y() { |
| 133 | log.push("y"); |
| 134 | return { |
| 135 | get z() { log.push("z"); return 1; } |
| 136 | } |
| 137 | } |
| 138 | }; |
| 139 | let { x : x0, y : { z : z1 }, x : x1 } = o; |
| 140 | assertSame(0, x0); |
| 141 | assertSame(1, z1); |
| 142 | assertSame(0, x1); |
| 143 | assertArrayEquals(["x", "y", "z", "x"], log); |
| 144 | |
| 145 | let sum = 0; |
| 146 | for (let {x, z} = { x : 0, z : 3 }; z != 0; z--) { |
| 147 | assertEquals(0, x); |
| 148 | sum += z; |
| 149 | } |
| 150 | assertEquals(6, sum); |
| 151 | }()); |
| 152 | |
| 153 | |
| 154 | (function TestObjectLiteralPatternLexicalConst() { |
| 155 | 'use strict'; |
| 156 | const { x : x, y : y } = { x : 1, y : 2 }; |
| 157 | assertEquals(1, x); |
| 158 | assertEquals(2, y); |
| 159 | |
| 160 | assertThrows(function() { x++; }, TypeError); |
| 161 | assertThrows(function() { y++; }, TypeError); |
| 162 | |
| 163 | const {z} = { z : 3 }; |
| 164 | assertEquals(3, z); |
| 165 | |
| 166 | for (const {x, z} = { x : 0, z : 3 }; z != 3 || x != 0;) { |
| 167 | assertTrue(false); |
| 168 | } |
| 169 | }()); |
| 170 | |
| 171 | |
| 172 | (function TestFailingMatchesSloppy() { |
| 173 | var {x, y} = {}; |
| 174 | assertSame(undefined, x); |
| 175 | assertSame(undefined, y); |
| 176 | |
| 177 | var { x : { z1 }, y2} = { x : {}, y2 : 42 } |
| 178 | assertSame(undefined, z1); |
| 179 | assertSame(42, y2); |
| 180 | }()); |
| 181 | |
| 182 | |
| 183 | (function TestFailingMatchesStrict() { |
| 184 | 'use strict'; |
| 185 | var {x, y} = {}; |
| 186 | assertSame(undefined, x); |
| 187 | assertSame(undefined, y); |
| 188 | |
| 189 | var { x : { z1 }, y2} = { x : {}, y2 : 42 } |
| 190 | assertSame(undefined, z1); |
| 191 | assertSame(42, y2); |
| 192 | |
| 193 | { |
| 194 | let {x1,y1} = {}; |
| 195 | assertSame(undefined, x1); |
| 196 | assertSame(undefined, y1); |
| 197 | |
| 198 | let { x : { z1 }, y2} = { x : {}, y2 : 42 } |
| 199 | assertSame(undefined, z1); |
| 200 | assertSame(42, y2); |
| 201 | } |
| 202 | }()); |
| 203 | |
| 204 | |
| 205 | (function TestTDZInIntializers() { |
| 206 | 'use strict'; |
| 207 | { |
| 208 | let {x, y = x} = {x : 42, y : 27}; |
| 209 | assertSame(42, x); |
| 210 | assertSame(27, y); |
| 211 | } |
| 212 | |
| 213 | { |
| 214 | let {x, y = x + 1} = { x : 42 }; |
| 215 | assertSame(42, x); |
| 216 | assertSame(43, y); |
| 217 | } |
| 218 | assertThrows(function() { |
| 219 | let {x = y, y} = { y : 42 }; |
| 220 | }, ReferenceError); |
| 221 | |
| 222 | { |
| 223 | let {x, y = eval("x+1")} = {x:42}; |
| 224 | assertEquals(42, x); |
| 225 | assertEquals(43, y); |
| 226 | } |
| 227 | |
| 228 | { |
| 229 | let {x, y = () => eval("x+1")} = {x:42}; |
| 230 | assertEquals(42, x); |
| 231 | assertEquals(43, y()); |
| 232 | } |
| 233 | |
| 234 | { |
| 235 | let {x = function() {return y+1;}, y} = {y:42}; |
| 236 | assertEquals(43, x()); |
| 237 | assertEquals(42, y); |
| 238 | } |
| 239 | { |
| 240 | let {x = function() {return eval("y+1");}, y} = {y:42}; |
| 241 | assertEquals(43, x()); |
| 242 | assertEquals(42, y); |
| 243 | } |
| 244 | }()); |
| 245 | |
| 246 | |
| 247 | (function TestSideEffectsInInitializers() { |
| 248 | var callCount = 0; |
| 249 | function f(v) { callCount++; return v; } |
| 250 | |
| 251 | callCount = 0; |
| 252 | var { x = f(42) } = { x : 27 }; |
| 253 | assertSame(27, x); |
| 254 | assertEquals(0, callCount); |
| 255 | |
| 256 | callCount = 0; |
| 257 | var { x = f(42) } = {}; |
| 258 | assertSame(42, x); |
| 259 | assertEquals(1, callCount); |
| 260 | }()); |
| 261 | |
| 262 | |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 263 | (function TestAssignmentExprInInitializers() { |
| 264 | { |
| 265 | let x, y; |
| 266 | { |
| 267 | let { x = y = 1 } = {}; |
| 268 | assertSame(x, 1); |
| 269 | assertSame(y, 1); |
| 270 | } |
| 271 | assertSame(undefined, x); |
| 272 | assertSame(1, y); |
| 273 | } |
| 274 | |
| 275 | { |
| 276 | let x, y; |
| 277 | { |
| 278 | let { x: x = y = 1 } = {}; |
| 279 | assertSame(1, x); |
| 280 | assertSame(1, y); |
| 281 | } |
| 282 | assertSame(undefined, x); |
| 283 | assertSame(1, y); |
| 284 | } |
| 285 | |
| 286 | { |
| 287 | let x, y; |
| 288 | { |
| 289 | let [ x = y = 1 ] = []; |
| 290 | assertSame(1, x); |
| 291 | assertSame(1, y); |
| 292 | } |
| 293 | assertSame(undefined, x); |
| 294 | assertSame(1, y); |
| 295 | } |
| 296 | |
| 297 | { |
| 298 | let x, y; |
| 299 | (function({ x = y = 1 }) {}({})); |
| 300 | assertSame(undefined, x); |
| 301 | assertSame(1, y); |
| 302 | } |
| 303 | |
| 304 | { |
| 305 | let x, y; |
| 306 | (function({ x: x = y = 1 }) {}({})); |
| 307 | assertSame(undefined, x); |
| 308 | assertSame(1, y); |
| 309 | } |
| 310 | |
| 311 | { |
| 312 | let x, y; |
| 313 | (function([ x = y = 1 ]) {}([])); |
| 314 | assertSame(undefined, x); |
| 315 | assertSame(1, y); |
| 316 | } |
| 317 | }()); |
| 318 | |
| 319 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 320 | (function TestMultipleAccesses() { |
| 321 | assertThrows( |
| 322 | "'use strict';"+ |
| 323 | "const {x,x} = {x:1};", |
| 324 | SyntaxError); |
| 325 | |
| 326 | assertThrows( |
| 327 | "'use strict';"+ |
| 328 | "let {x,x} = {x:1};", |
| 329 | SyntaxError); |
| 330 | |
| 331 | (function() { |
| 332 | var {x,x = 2} = {x : 1}; |
| 333 | assertSame(1, x); |
| 334 | }()); |
| 335 | |
| 336 | assertThrows(function () { |
| 337 | 'use strict'; |
| 338 | let {x = (function() { x = 2; }())} = {}; |
| 339 | }, ReferenceError); |
| 340 | |
| 341 | (function() { |
| 342 | 'use strict'; |
| 343 | let {x = (function() { x = 2; }())} = {x:1}; |
| 344 | assertSame(1, x); |
| 345 | }()); |
| 346 | }()); |
| 347 | |
| 348 | |
| 349 | (function TestComputedNames() { |
| 350 | var x = 1; |
| 351 | var {[x]:y} = {1:2}; |
| 352 | assertSame(2, y); |
| 353 | |
| 354 | (function(){ |
| 355 | 'use strict'; |
| 356 | let {[x]:y} = {1:2}; |
| 357 | assertSame(2, y); |
| 358 | }()); |
| 359 | |
| 360 | var callCount = 0; |
| 361 | function foo(v) { callCount++; return v; } |
| 362 | |
| 363 | (function() { |
| 364 | callCount = 0; |
| 365 | var {[foo("abc")]:x} = {abc:42}; |
| 366 | assertSame(42, x); |
| 367 | assertEquals(1, callCount); |
| 368 | }()); |
| 369 | |
| 370 | (function() { |
| 371 | 'use strict'; |
| 372 | callCount = 0; |
| 373 | let {[foo("abc")]:x} = {abc:42}; |
| 374 | assertSame(42, x); |
| 375 | assertEquals(1, callCount); |
| 376 | }()); |
| 377 | |
| 378 | (function() { |
| 379 | callCount = 0; |
| 380 | var {[foo("abc")]:x} = {}; |
| 381 | assertSame(undefined, x); |
| 382 | assertEquals(1, callCount); |
| 383 | }()); |
| 384 | |
| 385 | (function() { |
| 386 | 'use strict'; |
| 387 | callCount = 0; |
| 388 | let {[foo("abc")]:x} = {}; |
| 389 | assertSame(undefined, x); |
| 390 | assertEquals(1, callCount); |
| 391 | }()); |
| 392 | |
| 393 | for (val of [null, undefined]) { |
| 394 | callCount = 0; |
| 395 | assertThrows(function() { |
| 396 | var {[foo()]:x} = val; |
| 397 | }, TypeError); |
| 398 | assertEquals(0, callCount); |
| 399 | |
| 400 | callCount = 0; |
| 401 | assertThrows(function() { |
| 402 | 'use strict'; |
| 403 | let {[foo()]:x} = val; |
| 404 | }, TypeError); |
| 405 | assertEquals(0, callCount); |
| 406 | } |
| 407 | |
| 408 | var log = []; |
| 409 | var o = { |
| 410 | get x() { log.push("get x"); return 1; }, |
| 411 | get y() { log.push("get y"); return 2; } |
| 412 | } |
| 413 | function f(v) { log.push("f " + v); return v; } |
| 414 | |
| 415 | (function() { |
| 416 | log = []; |
| 417 | var { [f('x')]:x, [f('y')]:y } = o; |
| 418 | assertSame(1, x); |
| 419 | assertSame(2, y); |
| 420 | assertArrayEquals(["f x", "get x", "f y", "get y"], log); |
| 421 | }()); |
| 422 | |
| 423 | (function() { |
| 424 | 'use strict'; |
| 425 | log = []; |
| 426 | let { [f('x')]:x, [f('y')]:y } = o; |
| 427 | assertSame(1, x); |
| 428 | assertSame(2, y); |
| 429 | assertArrayEquals(["f x", "get x", "f y", "get y"], log); |
| 430 | }()); |
| 431 | |
| 432 | (function() { |
| 433 | 'use strict'; |
| 434 | log = []; |
| 435 | const { [f('x')]:x, [f('y')]:y } = o; |
| 436 | assertSame(1, x); |
| 437 | assertSame(2, y); |
| 438 | assertArrayEquals(["f x", "get x", "f y", "get y"], log); |
| 439 | }()); |
| 440 | }()); |
| 441 | |
| 442 | |
| 443 | (function TestExceptions() { |
| 444 | for (var val of [null, undefined]) { |
| 445 | assertThrows(function() { var {} = val; }, TypeError); |
| 446 | assertThrows(function() { var {x} = val; }, TypeError); |
| 447 | assertThrows(function() { var { x : {} } = { x : val }; }, TypeError); |
| 448 | assertThrows(function() { 'use strict'; let {} = val; }, TypeError); |
| 449 | assertThrows(function() { 'use strict'; let {x} = val; }, TypeError); |
| 450 | assertThrows(function() { 'use strict'; let { x : {} } = { x : val }; }, |
| 451 | TypeError); |
| 452 | } |
| 453 | }()); |
| 454 | |
| 455 | |
| 456 | (function TestArrayLiteral() { |
| 457 | var [a, b, c] = [1, 2, 3]; |
| 458 | assertSame(1, a); |
| 459 | assertSame(2, b); |
| 460 | assertSame(3, c); |
| 461 | }()); |
| 462 | |
| 463 | (function TestIterators() { |
| 464 | var log = []; |
| 465 | function* f() { |
| 466 | log.push("1"); |
| 467 | yield 1; |
| 468 | log.push("2"); |
| 469 | yield 2; |
| 470 | log.push("3"); |
| 471 | yield 3; |
| 472 | log.push("done"); |
| 473 | }; |
| 474 | |
| 475 | (function() { |
| 476 | log = []; |
| 477 | var [a, b, c] = f(); |
| 478 | assertSame(1, a); |
| 479 | assertSame(2, b); |
| 480 | assertSame(3, c); |
| 481 | assertArrayEquals(["1", "2", "3"], log); |
| 482 | }()); |
| 483 | |
| 484 | (function() { |
| 485 | log = []; |
| 486 | var [a, b, c, d] = f(); |
| 487 | assertSame(1, a); |
| 488 | assertSame(2, b); |
| 489 | assertSame(3, c); |
| 490 | assertSame(undefined, d); |
| 491 | assertArrayEquals(["1", "2", "3", "done"], log); |
| 492 | }()); |
| 493 | |
| 494 | (function() { |
| 495 | log = []; |
| 496 | var [a, , c] = f(); |
| 497 | assertSame(1, a); |
| 498 | assertSame(3, c); |
| 499 | assertArrayEquals(["1", "2", "3"], log); |
| 500 | }()); |
| 501 | |
| 502 | (function() { |
| 503 | log = []; |
| 504 | var [a, , c, d] = f(); |
| 505 | assertSame(1, a); |
| 506 | assertSame(3, c); |
| 507 | assertSame(undefined, d); |
| 508 | assertArrayEquals(["1", "2", "3", "done"], log); |
| 509 | }()); |
| 510 | |
| 511 | (function() { |
| 512 | log = []; |
| 513 | // last comma is not an elision. |
| 514 | var [a, b,] = f(); |
| 515 | assertSame(1, a); |
| 516 | assertSame(2, b); |
| 517 | assertArrayEquals(["1", "2"], log); |
| 518 | }()); |
| 519 | |
| 520 | (function() { |
| 521 | log = []; |
| 522 | // last comma is not an elision, but the comma before the last is. |
| 523 | var [a, b, ,] = f(); |
| 524 | assertSame(1, a); |
| 525 | assertSame(2, b); |
| 526 | assertArrayEquals(["1", "2", "3"], log); |
| 527 | }()); |
| 528 | |
| 529 | (function() { |
| 530 | log = []; |
| 531 | var [a, ...rest] = f(); |
| 532 | assertSame(1, a); |
| 533 | assertArrayEquals([2,3], rest); |
| 534 | assertArrayEquals(["1", "2", "3", "done"], log); |
| 535 | }()); |
| 536 | |
| 537 | (function() { |
| 538 | log = []; |
| 539 | var [a, b, c, ...rest] = f(); |
| 540 | assertSame(1, a); |
| 541 | assertSame(2, b); |
| 542 | assertSame(3, c); |
| 543 | assertArrayEquals([], rest); |
| 544 | assertArrayEquals(["1", "2", "3", "done"], log); |
| 545 | }()); |
| 546 | |
| 547 | (function() { |
| 548 | log = []; |
| 549 | var [a, b, c, d, ...rest] = f(); |
| 550 | assertSame(1, a); |
| 551 | assertSame(2, b); |
| 552 | assertSame(3, c); |
| 553 | assertSame(undefined, d); |
| 554 | assertArrayEquals([], rest); |
| 555 | assertArrayEquals(["1", "2", "3", "done"], log); |
| 556 | }()); |
| 557 | }()); |
| 558 | |
| 559 | |
| 560 | (function TestIteratorsLexical() { |
| 561 | 'use strict'; |
| 562 | var log = []; |
| 563 | function* f() { |
| 564 | log.push("1"); |
| 565 | yield 1; |
| 566 | log.push("2"); |
| 567 | yield 2; |
| 568 | log.push("3"); |
| 569 | yield 3; |
| 570 | log.push("done"); |
| 571 | }; |
| 572 | |
| 573 | (function() { |
| 574 | log = []; |
| 575 | let [a, b, c] = f(); |
| 576 | assertSame(1, a); |
| 577 | assertSame(2, b); |
| 578 | assertSame(3, c); |
| 579 | assertArrayEquals(["1", "2", "3"], log); |
| 580 | }()); |
| 581 | |
| 582 | (function() { |
| 583 | log = []; |
| 584 | let [a, b, c, d] = f(); |
| 585 | assertSame(1, a); |
| 586 | assertSame(2, b); |
| 587 | assertSame(3, c); |
| 588 | assertSame(undefined, d); |
| 589 | assertArrayEquals(["1", "2", "3", "done"], log); |
| 590 | }()); |
| 591 | |
| 592 | (function() { |
| 593 | log = []; |
| 594 | let [a, , c] = f(); |
| 595 | assertSame(1, a); |
| 596 | assertSame(3, c); |
| 597 | assertArrayEquals(["1", "2", "3"], log); |
| 598 | }()); |
| 599 | |
| 600 | (function() { |
| 601 | log = []; |
| 602 | let [a, , c, d] = f(); |
| 603 | assertSame(1, a); |
| 604 | assertSame(3, c); |
| 605 | assertSame(undefined, d); |
| 606 | assertArrayEquals(["1", "2", "3", "done"], log); |
| 607 | }()); |
| 608 | |
| 609 | (function() { |
| 610 | log = []; |
| 611 | // last comma is not an elision. |
| 612 | let [a, b,] = f(); |
| 613 | assertSame(1, a); |
| 614 | assertSame(2, b); |
| 615 | assertArrayEquals(["1", "2"], log); |
| 616 | }()); |
| 617 | |
| 618 | (function() { |
| 619 | log = []; |
| 620 | // last comma is not an elision, but the comma before the last is. |
| 621 | let [a, b, ,] = f(); |
| 622 | assertSame(1, a); |
| 623 | assertSame(2, b); |
| 624 | assertArrayEquals(["1", "2", "3"], log); |
| 625 | }()); |
| 626 | |
| 627 | (function() { |
| 628 | log = []; |
| 629 | let [a, ...rest] = f(); |
| 630 | assertSame(1, a); |
| 631 | assertArrayEquals([2,3], rest); |
| 632 | assertArrayEquals(["1", "2", "3", "done"], log); |
| 633 | }()); |
| 634 | |
| 635 | (function() { |
| 636 | log = []; |
| 637 | let [a, b, c, ...rest] = f(); |
| 638 | assertSame(1, a); |
| 639 | assertSame(2, b); |
| 640 | assertSame(3, c); |
| 641 | assertArrayEquals([], rest); |
| 642 | assertArrayEquals(["1", "2", "3", "done"], log); |
| 643 | }()); |
| 644 | |
| 645 | (function() { |
| 646 | log = []; |
| 647 | let [a, b, c, d, ...rest] = f(); |
| 648 | assertSame(1, a); |
| 649 | assertSame(2, b); |
| 650 | assertSame(3, c); |
| 651 | assertSame(undefined, d); |
| 652 | assertArrayEquals([], rest); |
| 653 | assertArrayEquals(["1", "2", "3", "done"], log); |
| 654 | }()); |
| 655 | }()); |
| 656 | |
| 657 | (function TestIteratorsRecursive() { |
| 658 | var log = []; |
| 659 | function* f() { |
| 660 | log.push("1"); |
| 661 | yield {x : 1, y : 2}; |
| 662 | log.push("2"); |
| 663 | yield [42, 27, 30]; |
| 664 | log.push("3"); |
| 665 | yield "abc"; |
| 666 | log.push("done"); |
| 667 | }; |
| 668 | |
| 669 | (function() { |
| 670 | var [{x, y}, [a, b]] = f(); |
| 671 | assertSame(1, x); |
| 672 | assertSame(2, y); |
| 673 | assertSame(42, a); |
| 674 | assertSame(27, b); |
| 675 | assertArrayEquals(["1", "2"], log); |
| 676 | }()); |
| 677 | |
| 678 | (function() { |
| 679 | 'use strict'; |
| 680 | log = []; |
| 681 | let [{x, y}, [a, b]] = f(); |
| 682 | assertSame(1, x); |
| 683 | assertSame(2, y); |
| 684 | assertSame(42, a); |
| 685 | assertSame(27, b); |
| 686 | assertArrayEquals(["1", "2"], log); |
| 687 | }()); |
| 688 | }()); |
| 689 | |
| 690 | |
| 691 | (function TestForEachLexical() { |
| 692 | 'use strict'; |
| 693 | let a = [{x:1, y:-1}, {x:2,y:-2}, {x:3,y:-3}]; |
| 694 | let sumX = 0; |
| 695 | let sumY = 0; |
| 696 | let fs = []; |
| 697 | for (let {x,y} of a) { |
| 698 | sumX += x; |
| 699 | sumY += y; |
| 700 | fs.push({fx : function() { return x; }, fy : function() { return y }}); |
| 701 | } |
| 702 | assertSame(6, sumX); |
| 703 | assertSame(-6, sumY); |
| 704 | assertSame(3, fs.length); |
| 705 | for (let i = 0; i < fs.length; i++) { |
| 706 | let {fx,fy} = fs[i]; |
| 707 | assertSame(i+1, fx()); |
| 708 | assertSame(-(i+1), fy()); |
| 709 | } |
| 710 | |
| 711 | var o = { __proto__:null, 'a1':1, 'b2':2 }; |
| 712 | let sx = ''; |
| 713 | let sy = ''; |
| 714 | for (let [x,y] in o) { |
| 715 | sx += x; |
| 716 | sy += y; |
| 717 | } |
| 718 | assertEquals('ab', sx); |
| 719 | assertEquals('12', sy); |
| 720 | }()); |
| 721 | |
| 722 | |
| 723 | (function TestForEachVars() { |
| 724 | var a = [{x:1, y:-1}, {x:2,y:-2}, {x:3,y:-3}]; |
| 725 | var sumX = 0; |
| 726 | var sumY = 0; |
| 727 | var fs = []; |
| 728 | for (var {x,y} of a) { |
| 729 | sumX += x; |
| 730 | sumY += y; |
| 731 | fs.push({fx : function() { return x; }, fy : function() { return y }}); |
| 732 | } |
| 733 | assertSame(6, sumX); |
| 734 | assertSame(-6, sumY); |
| 735 | assertSame(3, fs.length); |
| 736 | for (var i = 0; i < fs.length; i++) { |
| 737 | var {fx,fy} = fs[i]; |
| 738 | assertSame(3, fx()); |
| 739 | assertSame(-3, fy()); |
| 740 | } |
| 741 | |
| 742 | var o = { __proto__:null, 'a1':1, 'b2':2 }; |
| 743 | var sx = ''; |
| 744 | var sy = ''; |
| 745 | for (var [x,y] in o) { |
| 746 | sx += x; |
| 747 | sy += y; |
| 748 | } |
| 749 | assertEquals('ab', sx); |
| 750 | assertEquals('12', sy); |
| 751 | }()); |
| 752 | |
| 753 | |
| 754 | (function TestParameters() { |
| 755 | function f({a, b}) { return a - b; } |
| 756 | assertEquals(1, f({a : 6, b : 5})); |
| 757 | |
| 758 | function f1(c, {a, b}) { return c + a - b; } |
| 759 | assertEquals(8, f1(7, {a : 6, b : 5})); |
| 760 | |
| 761 | function f2({c, d}, {a, b}) { return c - d + a - b; } |
| 762 | assertEquals(7, f2({c : 7, d : 1}, {a : 6, b : 5})); |
| 763 | |
| 764 | function f3([{a, b}]) { return a - b; } |
| 765 | assertEquals(1, f3([{a : 6, b : 5}])); |
| 766 | |
| 767 | var g = ({a, b}) => { return a - b; }; |
| 768 | assertEquals(1, g({a : 6, b : 5})); |
| 769 | |
| 770 | var g1 = (c, {a, b}) => { return c + a - b; }; |
| 771 | assertEquals(8, g1(7, {a : 6, b : 5})); |
| 772 | |
| 773 | var g2 = ({c, d}, {a, b}) => { return c - d + a - b; }; |
| 774 | assertEquals(7, g2({c : 7, d : 1}, {a : 6, b : 5})); |
| 775 | |
| 776 | var g3 = ([{a, b}]) => { return a - b; }; |
| 777 | assertEquals(1, g3([{a : 6, b : 5}])); |
| 778 | }()); |
| 779 | |
| 780 | |
| 781 | (function TestExpressionsInParameters() { |
| 782 | function f0(x = eval(0)) { return x } |
| 783 | assertEquals(0, f0()); |
| 784 | function f1({a = eval(1)}) { return a } |
| 785 | assertEquals(1, f1({})); |
| 786 | function f2([x = eval(2)]) { return x } |
| 787 | assertEquals(2, f2([])); |
| 788 | function f3({[eval(7)]: x}) { return x } |
| 789 | assertEquals(3, f3({7: 3})); |
| 790 | })(); |
| 791 | |
| 792 | |
| 793 | (function TestParameterScoping() { |
| 794 | var x = 1; |
| 795 | |
| 796 | function f1({a = x}) { var x = 2; return a; } |
| 797 | assertEquals(1, f1({})); |
| 798 | function f2({a = x}) { function x() {}; return a; } |
| 799 | assertEquals(1, f2({})); |
| 800 | (function() { |
| 801 | 'use strict'; |
| 802 | function f3({a = x}) { let x = 2; return a; } |
| 803 | assertEquals(1, f3({})); |
| 804 | function f4({a = x}) { const x = 2; return a; } |
| 805 | assertEquals(1, f4({})); |
| 806 | function f5({a = x}) { function x() {}; return a; } |
| 807 | assertEquals(1, f5({})); |
| 808 | })(); |
| 809 | function f6({a = eval("x")}) { var x; return a; } |
| 810 | assertEquals(1, f6({})); |
| 811 | (function() { |
| 812 | 'use strict'; |
| 813 | function f61({a = eval("x")}) { var x; return a; } |
| 814 | assertEquals(1, f61({})); |
| 815 | })(); |
| 816 | function f62({a = eval("'use strict'; x")}) { var x; return a; } |
| 817 | assertEquals(1, f62({})); |
| 818 | function f7({a = function() { return x }}) { var x; return a(); } |
| 819 | assertEquals(1, f7({})); |
| 820 | function f8({a = () => x}) { var x; return a(); } |
| 821 | assertEquals(1, f8({})); |
| 822 | function f9({a = () => eval("x")}) { var x; return a(); } |
| 823 | assertEquals(1, f9({})); |
| 824 | (function TestInitializedWithEvalArrowStrict() { |
| 825 | 'use strict'; |
| 826 | function f91({a = () => eval("x")}) { var x; return a(); } |
| 827 | assertEquals(1, f91({})); |
| 828 | })(); |
| 829 | function f92({a = () => { 'use strict'; return eval("x") }}) { var x; return a(); } |
| 830 | assertEquals(1, f92({})); |
| 831 | function f93({a = () => eval("'use strict'; x")}) { var x; return a(); } |
| 832 | assertEquals(1, f93({})); |
| 833 | |
| 834 | var g1 = ({a = x}) => { var x = 2; return a; }; |
| 835 | assertEquals(1, g1({})); |
| 836 | var g2 = ({a = x}) => { function x() {}; return a; }; |
| 837 | assertEquals(1, g2({})); |
| 838 | (function() { |
| 839 | 'use strict'; |
| 840 | var g3 = ({a = x}) => { let x = 2; return a; }; |
| 841 | assertEquals(1, g3({})); |
| 842 | var g4 = ({a = x}) => { const x = 2; return a; }; |
| 843 | assertEquals(1, g4({})); |
| 844 | var g5 = ({a = x}) => { function x() {}; return a; }; |
| 845 | assertEquals(1, g5({})); |
| 846 | })(); |
| 847 | var g6 = ({a = eval("x")}) => { var x; return a; }; |
| 848 | assertEquals(1, g6({})); |
| 849 | (function() { |
| 850 | 'use strict'; |
| 851 | var g61 = ({a = eval("x")}) => { var x; return a; }; |
| 852 | assertEquals(1, g61({})); |
| 853 | })(); |
| 854 | var g62 = ({a = eval("'use strict'; x")}) => { var x; return a; }; |
| 855 | assertEquals(1, g62({})); |
| 856 | var g7 = ({a = function() { return x }}) => { var x; return a(); }; |
| 857 | assertEquals(1, g7({})); |
| 858 | var g8 = ({a = () => x}) => { var x; return a(); }; |
| 859 | assertEquals(1, g8({})); |
| 860 | var g9 = ({a = () => eval("x")}) => { var x; return a(); }; |
| 861 | assertEquals(1, g9({})); |
| 862 | (function() { |
| 863 | 'use strict'; |
| 864 | var g91 = ({a = () => eval("x")}) => { var x; return a(); }; |
| 865 | assertEquals(1, g91({})); |
| 866 | var g92 = ({a = () => { return eval("x") }}) => { var x; return a(); }; |
| 867 | assertEquals(1, g92({})); |
| 868 | })(); |
| 869 | var g93 = ({a = () => eval("'use strict'; x")}) => { var x; return a(); }; |
| 870 | assertEquals(1, g93({})); |
| 871 | |
| 872 | var f11 = function f({x = f}) { var f; return x; } |
| 873 | assertSame(f11, f11({})); |
| 874 | var f12 = function f({x = f}) { function f() {}; return x; } |
| 875 | assertSame(f12, f12({})); |
| 876 | (function() { |
| 877 | 'use strict'; |
| 878 | var f13 = function f({x = f}) { let f; return x; } |
| 879 | assertSame(f13, f13({})); |
| 880 | var f14 = function f({x = f}) { const f = 0; return x; } |
| 881 | assertSame(f14, f14({})); |
| 882 | var f15 = function f({x = f}) { function f() {}; return x; } |
| 883 | assertSame(f15, f15({})); |
| 884 | })(); |
| 885 | var f16 = function f({f = 7, x = f}) { return x; } |
| 886 | assertSame(7, f16({})); |
| 887 | |
| 888 | var y = 'a'; |
| 889 | function f20({[y]: x}) { var y = 'b'; return x; } |
| 890 | assertEquals(1, f20({a: 1, b: 2})); |
| 891 | function f21({[eval('y')]: x}) { var y = 'b'; return x; } |
| 892 | assertEquals(1, f21({a: 1, b: 2})); |
| 893 | var g20 = ({[y]: x}) => { var y = 'b'; return x; }; |
| 894 | assertEquals(1, g20({a: 1, b: 2})); |
| 895 | var g21 = ({[eval('y')]: x}) => { var y = 'b'; return x; }; |
| 896 | assertEquals(1, g21({a: 1, b: 2})); |
| 897 | })(); |
| 898 | |
| 899 | |
| 900 | (function TestParameterDestructuringTDZ() { |
| 901 | function f1({a = x}, x) { return a } |
| 902 | assertThrows(() => f1({}, 4), ReferenceError); |
| 903 | assertEquals(4, f1({a: 4}, 5)); |
| 904 | function f2({a = eval("x")}, x) { return a } |
| 905 | assertThrows(() => f2({}, 4), ReferenceError); |
| 906 | assertEquals(4, f2({a: 4}, 5)); |
| 907 | (function() { |
| 908 | 'use strict'; |
| 909 | function f3({a = eval("x")}, x) { return a } |
| 910 | assertThrows(() => f3({}, 4), ReferenceError); |
| 911 | assertEquals(4, f3({a: 4}, 5)); |
| 912 | })(); |
| 913 | function f4({a = eval("'use strict'; x")}, x) { return a } |
| 914 | assertThrows(() => f4({}, 4), ReferenceError); |
| 915 | assertEquals(4, f4({a: 4}, 5)); |
| 916 | |
| 917 | function f5({a = () => x}, x) { return a() } |
| 918 | assertEquals(4, f5({a: () => 4}, 5)); |
| 919 | function f6({a = () => eval("x")}, x) { return a() } |
| 920 | assertEquals(4, f6({a: () => 4}, 5)); |
| 921 | (function() { |
| 922 | 'use strict'; |
| 923 | function f7({a = () => eval("x")}, x) { return a() } |
| 924 | assertEquals(4, f7({a: () => 4}, 5)); |
| 925 | })(); |
| 926 | function f8({a = () => eval("'use strict'; x")}, x) { return a() } |
| 927 | assertEquals(4, f8({a: () => 4}, 5)); |
| 928 | |
| 929 | function f11({a = b}, {b}) { return a } |
| 930 | assertThrows(() => f11({}, {b: 4}), ReferenceError); |
| 931 | assertEquals(4, f11({a: 4}, {b: 5})); |
| 932 | function f12({a = eval("b")}, {b}) { return a } |
| 933 | assertThrows(() => f12({}, {b: 4}), ReferenceError); |
| 934 | assertEquals(4, f12({a: 4}, {b: 5})); |
| 935 | (function() { |
| 936 | 'use strict'; |
| 937 | function f13({a = eval("b")}, {b}) { return a } |
| 938 | assertThrows(() => f13({}, {b: 4}), ReferenceError); |
| 939 | assertEquals(4, f13({a: 4}, {b: 5})); |
| 940 | })(); |
| 941 | function f14({a = eval("'use strict'; b")}, {b}) { return a } |
| 942 | assertThrows(() => f14({}, {b: 4}), ReferenceError); |
| 943 | assertEquals(4, f14({a: 4}, {b: 5})); |
| 944 | |
| 945 | function f15({a = () => b}, {b}) { return a() } |
| 946 | assertEquals(4, f15({a: () => 4}, {b: 5})); |
| 947 | function f16({a = () => eval("b")}, {b}) { return a() } |
| 948 | assertEquals(4, f16({a: () => 4}, {b: 5})); |
| 949 | (function() { |
| 950 | 'use strict'; |
| 951 | function f17({a = () => eval("b")}, {b}) { return a() } |
| 952 | assertEquals(4, f17({a: () => 4}, {b: 5})); |
| 953 | })(); |
| 954 | function f18({a = () => eval("'use strict'; b")}, {b}) { return a() } |
| 955 | assertEquals(4, f18({a: () => 4}, {b: 5})); |
| 956 | |
| 957 | // TODO(caitp): TDZ for rest parameters is not working yet. |
| 958 | // function f30({x = a}, ...a) { return x[0] } |
| 959 | // assertThrows(() => f30({}), ReferenceError); |
| 960 | // assertEquals(4, f30({a: [4]}, 5)); |
| 961 | // function f31({x = eval("a")}, ...a) { return x[0] } |
| 962 | // assertThrows(() => f31({}), ReferenceError); |
| 963 | // assertEquals(4, f31({a: [4]}, 5)); |
| 964 | // function f32({x = eval("a")}, ...a) { 'use strict'; return x[0] } |
| 965 | // assertThrows(() => f32({}), ReferenceError); |
| 966 | // assertEquals(4, f32({a: [4]}, 5)); |
| 967 | // function f33({x = eval("'use strict'; a")}, ...a) { return x[0] } |
| 968 | // assertThrows(() => f33({}), ReferenceError); |
| 969 | // assertEquals(4, f33({a: [4]}, 5)); |
| 970 | |
| 971 | function f34({x = function() { return a }}, ...a) { return x()[0] } |
| 972 | assertEquals(4, f34({}, 4)); |
| 973 | function f35({x = () => a}, ...a) { return x()[0] } |
| 974 | assertEquals(4, f35({}, 4)); |
| 975 | function f36({x = () => eval("a")}, ...a) { return x()[0] } |
| 976 | assertEquals(4, f36({}, 4)); |
| 977 | (function() { |
| 978 | 'use strict'; |
| 979 | function f37({x = () => eval("a")}, ...a) { return x()[0] } |
| 980 | assertEquals(4, f37({}, 4)); |
| 981 | })(); |
| 982 | function f38({x = () => { 'use strict'; return eval("a") }}, ...a) { return x()[0] } |
| 983 | assertEquals(4, f38({}, 4)); |
| 984 | function f39({x = () => eval("'use strict'; a")}, ...a) { return x()[0] } |
| 985 | assertEquals(4, f39({}, 4)); |
| 986 | |
| 987 | // var g30 = ({x = a}, ...a) => {}; |
| 988 | // assertThrows(() => g30({}), ReferenceError); |
| 989 | // var g31 = ({x = eval("a")}, ...a) => {}; |
| 990 | // assertThrows(() => g31({}), ReferenceError); |
| 991 | // var g32 = ({x = eval("a")}, ...a) => { 'use strict'; }; |
| 992 | // assertThrows(() => g32({}), ReferenceError); |
| 993 | // var g33 = ({x = eval("'use strict'; a")}, ...a) => {}; |
| 994 | // assertThrows(() => g33({}), ReferenceError); |
| 995 | var g34 = ({x = function() { return a }}, ...a) => { return x()[0] }; |
| 996 | assertEquals(4, g34({}, 4)); |
| 997 | var g35 = ({x = () => a}, ...a) => { return x()[0] }; |
| 998 | assertEquals(4, g35({}, 4)); |
| 999 | })(); |
| 1000 | |
| 1001 | |
| 1002 | (function TestDuplicatesInParameters() { |
| 1003 | assertThrows("'use strict';function f(x,x){}", SyntaxError); |
| 1004 | assertThrows("'use strict';function f({x,x}){}", SyntaxError); |
| 1005 | assertThrows("'use strict';function f(x, {x}){}", SyntaxError); |
| 1006 | assertThrows("'use strict';var f = (x,x) => {};", SyntaxError); |
| 1007 | assertThrows("'use strict';var f = ({x,x}) => {};", SyntaxError); |
| 1008 | assertThrows("'use strict';var f = (x, {x}) => {};", SyntaxError); |
| 1009 | |
| 1010 | function ok1(x) { var x; return x; }; |
| 1011 | assertEquals(1, ok1(1)); |
| 1012 | function ok2(x) { 'use strict'; { let x = 2; return x; } }; |
| 1013 | assertEquals(2, ok2(1)); |
| 1014 | }()); |
| 1015 | |
| 1016 | |
| 1017 | (function TestShadowingOfParameters() { |
| 1018 | function f1({x}) { var x = 2; return x } |
| 1019 | assertEquals(2, f1({x: 1})); |
| 1020 | function f2({x}) { { var x = 2; } return x; } |
| 1021 | assertEquals(2, f2({x: 1})); |
| 1022 | function f3({x}) { var y = x; var x = 2; return y; } |
| 1023 | assertEquals(1, f3({x: 1})); |
| 1024 | function f4({x}) { { var y = x; var x = 2; } return y; } |
| 1025 | assertEquals(1, f4({x: 1})); |
| 1026 | function f5({x}, g = () => x) { var x = 2; return g(); } |
| 1027 | assertEquals(1, f5({x: 1})); |
| 1028 | function f6({x}, g = () => x) { { var x = 2; } return g(); } |
| 1029 | assertEquals(1, f6({x: 1})); |
| 1030 | function f7({x}) { var g = () => x; var x = 2; return g(); } |
| 1031 | assertEquals(2, f7({x: 1})); |
| 1032 | function f8({x}) { { var g = () => x; var x = 2; } return g(); } |
| 1033 | assertEquals(2, f8({x: 1})); |
| 1034 | function f9({x}, g = () => eval("x")) { var x = 2; return g(); } |
| 1035 | assertEquals(1, f9({x: 1})); |
| 1036 | |
| 1037 | function f10({x}, y) { var y; return y } |
| 1038 | assertEquals(2, f10({x: 6}, 2)); |
| 1039 | function f11({x}, y) { var z = y; var y = 2; return z; } |
| 1040 | assertEquals(1, f11({x: 6}, 1)); |
| 1041 | function f12(y, g = () => y) { var y = 2; return g(); } |
| 1042 | assertEquals(1, f12(1)); |
| 1043 | function f13({x}, y, [z], v) { var x, y, z; return x*y*z*v } |
| 1044 | assertEquals(210, f13({x: 2}, 3, [5], 7)); |
| 1045 | |
| 1046 | function f20({x}) { function x() { return 2 }; return x(); } |
| 1047 | assertEquals(2, f20({x: 1})); |
| 1048 | // Function hoisting is blocked by the conflicting x declaration |
| 1049 | function f21({x}) { { function x() { return 2 } } return x(); } |
| 1050 | assertThrows(() => f21({x: 1}), TypeError); |
| 1051 | |
| 1052 | var g1 = ({x}) => { var x = 2; return x }; |
| 1053 | assertEquals(2, g1({x: 1})); |
| 1054 | var g2 = ({x}) => { { var x = 2; } return x; }; |
| 1055 | assertEquals(2, g2({x: 1})); |
| 1056 | var g3 = ({x}) => { var y = x; var x = 2; return y; }; |
| 1057 | assertEquals(1, g3({x: 1})); |
| 1058 | var g4 = ({x}) => { { var y = x; var x = 2; } return y; }; |
| 1059 | assertEquals(1, g4({x: 1})); |
| 1060 | var g5 = ({x}, g = () => x) => { var x = 2; return g(); }; |
| 1061 | assertEquals(1, g5({x: 1})); |
| 1062 | var g6 = ({x}, g = () => x) => { { var x = 2; } return g(); }; |
| 1063 | assertEquals(1, g6({x: 1})); |
| 1064 | var g7 = ({x}) => { var g = () => x; var x = 2; return g(); }; |
| 1065 | assertEquals(2, g7({x: 1})); |
| 1066 | var g8 = ({x}) => { { var g = () => x; var x = 2; } return g(); }; |
| 1067 | assertEquals(2, g8({x: 1})); |
| 1068 | var g9 = ({x}, g = () => eval("x")) => { var x = 2; return g(); }; |
| 1069 | assertEquals(1, g9({x: 1})); |
| 1070 | |
| 1071 | var g10 = ({x}, y) => { var y; return y }; |
| 1072 | assertEquals(2, g10({x: 6}, 2)); |
| 1073 | var g11 = ({x}, y) => { var z = y; var y = 2; return z; }; |
| 1074 | assertEquals(1, g11({x: 6}, 1)); |
| 1075 | var g12 = (y, g = () => y) => { var y = 2; return g(); }; |
| 1076 | assertEquals(1, g12(1)); |
| 1077 | var g13 = ({x}, y, [z], v) => { var x, y, z; return x*y*z*v }; |
| 1078 | assertEquals(210, g13({x: 2}, 3, [5], 7)); |
| 1079 | |
| 1080 | var g20 = ({x}) => { function x() { return 2 }; return x(); } |
| 1081 | assertEquals(2, g20({x: 1})); |
| 1082 | var g21 = ({x}) => { { function x() { return 2 } } return x(); } |
| 1083 | assertThrows(() => g21({x: 1}), TypeError); |
| 1084 | |
| 1085 | assertThrows("'use strict'; function f(x) { let x = 0; }; f({});", SyntaxError); |
| 1086 | assertThrows("'use strict'; function f({x}) { let x = 0; }; f({});", SyntaxError); |
| 1087 | assertThrows("'use strict'; function f(x) { const x = 0; }; f({});", SyntaxError); |
| 1088 | assertThrows("'use strict'; function f({x}) { const x = 0; }; f({});", SyntaxError); |
| 1089 | |
| 1090 | assertThrows("'use strict'; let g = (x) => { let x = 0; }; f({});", SyntaxError); |
| 1091 | assertThrows("'use strict'; let g = ({x}) => { let x = 0; }; f({});", SyntaxError); |
| 1092 | assertThrows("'use strict'; let g = (x) => { const x = 0; }; f({});", SyntaxError); |
| 1093 | assertThrows("'use strict'; let g = ({x}) => { const x = 0; }; f({});", SyntaxError); |
| 1094 | }()); |
| 1095 | |
| 1096 | |
| 1097 | (function TestArgumentsForNonSimpleParameters() { |
| 1098 | function f1({}, x) { arguments[1] = 0; return x } |
| 1099 | assertEquals(6, f1({}, 6)); |
| 1100 | function f2({}, x) { x = 2; return arguments[1] } |
| 1101 | assertEquals(7, f2({}, 7)); |
| 1102 | function f3(x, {}) { arguments[0] = 0; return x } |
| 1103 | assertEquals(6, f3(6, {})); |
| 1104 | function f4(x, {}) { x = 2; return arguments[0] } |
| 1105 | assertEquals(7, f4(7, {})); |
| 1106 | function f5(x, ...a) { arguments[0] = 0; return x } |
| 1107 | assertEquals(6, f5(6, {})); |
| 1108 | function f6(x, ...a) { x = 2; return arguments[0] } |
| 1109 | assertEquals(6, f6(6, {})); |
| 1110 | function f7({a: x}) { x = 2; return arguments[0].a } |
| 1111 | assertEquals(5, f7({a: 5})); |
| 1112 | function f8(x, ...a) { a = []; return arguments[1] } |
| 1113 | assertEquals(6, f8(5, 6)); |
| 1114 | }()); |
| 1115 | |
| 1116 | |
| 1117 | (function TestForInOfTDZ() { |
Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 1118 | assertThrows("'use strict'; let x = {}; for (let [x, y] of [x]);", ReferenceError); |
| 1119 | assertThrows("'use strict'; let x = {}; for (let [y, x] of [x]);", ReferenceError); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1120 | assertThrows("'use strict'; let x = {}; for (let [x, y] in {x});", ReferenceError); |
| 1121 | assertThrows("'use strict'; let x = {}; for (let [y, x] in {x});", ReferenceError); |
| 1122 | }()); |
| 1123 | |
| 1124 | |
| 1125 | (function TestFunctionLength() { |
| 1126 | assertEquals(1, (function({}) {}).length); |
| 1127 | assertEquals(1, (function([]) {}).length); |
| 1128 | assertEquals(1, (function({x}) {}).length); |
| 1129 | assertEquals(1, (function({}, ...a) {}).length); |
| 1130 | assertEquals(1, (function({x}, {y} = {}) {}).length); |
| 1131 | assertEquals(1, (function({x}, {y} = {}, ...a) {}).length); |
| 1132 | assertEquals(2, (function(x, {y}, {z} = {}) {}).length); |
| 1133 | assertEquals(2, (function({x}, {}, {z} = {}, ...a) {}).length); |
| 1134 | assertEquals(1, (function(x, {y} = {}, {z}) {}).length); |
| 1135 | assertEquals(1, (function({x}, {y} = {}, {z}, ...a) {}).length); |
| 1136 | assertEquals(1, (function(x, {y} = {}, {z}, {v} = {}) {}).length); |
| 1137 | assertEquals(1, (function({x}, {y} = {}, {z}, {v} = {}, ...a) {}).length); |
| 1138 | })(); |
| 1139 | |
| 1140 | |
| 1141 | (function TestDirectiveThrows() { |
| 1142 | "use strict"; |
| 1143 | |
| 1144 | assertThrows(function(){ eval("function({}){'use strict';}") }, SyntaxError); |
| 1145 | assertThrows(function(){ eval("({}) => {'use strict';}") }, SyntaxError); |
| 1146 | assertThrows( |
| 1147 | function(){ eval("(class{foo({}) {'use strict';}});") }, SyntaxError); |
| 1148 | |
| 1149 | assertThrows( |
| 1150 | function(){ eval("function(a, {}){'use strict';}") }, SyntaxError); |
| 1151 | assertThrows(function(){ eval("(a, {}) => {'use strict';}") }, SyntaxError); |
| 1152 | assertThrows( |
| 1153 | function(){ eval("(class{foo(a, {}) {'use strict';}});") }, SyntaxError); |
| 1154 | })(); |
| 1155 | |
| 1156 | |
| 1157 | (function TestLegacyConstDestructuringInForLoop() { |
| 1158 | var result; |
| 1159 | for (const {foo} of [{foo: 1}]) { result = foo; } |
| 1160 | assertEquals(1, result); |
| 1161 | })(); |
| 1162 | |
| 1163 | |
| 1164 | (function TestCatch() { |
| 1165 | "use strict"; |
| 1166 | |
| 1167 | // For testing proper scoping. |
| 1168 | var foo = "hello", bar = "world", baz = 42; |
| 1169 | |
| 1170 | try { |
| 1171 | throw {foo: 1, bar: 2}; |
| 1172 | } catch ({foo, bar, baz = 3}) { |
| 1173 | assertEquals(1, foo); |
| 1174 | assertEquals(2, bar); |
| 1175 | assertEquals(3, baz); |
| 1176 | } |
| 1177 | |
| 1178 | try { |
| 1179 | throw [1, 2, 3]; |
| 1180 | } catch ([foo, ...bar]) { |
| 1181 | assertEquals(1, foo); |
| 1182 | assertEquals([2, 3], bar); |
| 1183 | } |
| 1184 | |
| 1185 | assertEquals("hello", foo); |
| 1186 | assertEquals("world", bar); |
| 1187 | assertEquals(42, baz); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1188 | |
| 1189 | assertEquals(undefined, eval('try {throw {foo: 1, bar: 2}} catch({foo}) {}')); |
| 1190 | assertEquals(undefined, eval('try {throw [1, 2, 3]} catch([x]) {}')); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1191 | })(); |