1 //===- unittest/Format/FormatTestJS.cpp - Formatting unit tests for JS ----===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #include "FormatTestUtils.h" 11 #include "clang/Format/Format.h" 12 #include "llvm/Support/Debug.h" 13 #include "gtest/gtest.h" 14 15 #define DEBUG_TYPE "format-test" 16 17 namespace clang { 18 namespace format { 19 20 class FormatTestJS : public ::testing::Test { 21 protected: 22 static std::string format(llvm::StringRef Code, unsigned Offset, 23 unsigned Length, const FormatStyle &Style) { 24 DEBUG(llvm::errs() << "---\n"); 25 DEBUG(llvm::errs() << Code << "\n\n"); 26 std::vector<tooling::Range> Ranges(1, tooling::Range(Offset, Length)); 27 bool IncompleteFormat = false; 28 tooling::Replacements Replaces = 29 reformat(Style, Code, Ranges, "<stdin>", &IncompleteFormat); 30 EXPECT_FALSE(IncompleteFormat); 31 std::string Result = applyAllReplacements(Code, Replaces); 32 EXPECT_NE("", Result); 33 DEBUG(llvm::errs() << "\n" << Result << "\n\n"); 34 return Result; 35 } 36 37 static std::string format( 38 llvm::StringRef Code, 39 const FormatStyle &Style = getGoogleStyle(FormatStyle::LK_JavaScript)) { 40 return format(Code, 0, Code.size(), Style); 41 } 42 43 static FormatStyle getGoogleJSStyleWithColumns(unsigned ColumnLimit) { 44 FormatStyle Style = getGoogleStyle(FormatStyle::LK_JavaScript); 45 Style.ColumnLimit = ColumnLimit; 46 return Style; 47 } 48 49 static void verifyFormat( 50 llvm::StringRef Code, 51 const FormatStyle &Style = getGoogleStyle(FormatStyle::LK_JavaScript)) { 52 std::string Result = format(test::messUp(Code), Style); 53 EXPECT_EQ(Code.str(), Result) << "Formatted:\n" << Result; 54 } 55 56 static void verifyFormat( 57 llvm::StringRef Expected, 58 llvm::StringRef Code, 59 const FormatStyle &Style = getGoogleStyle(FormatStyle::LK_JavaScript)) { 60 std::string Result = format(Code, Style); 61 EXPECT_EQ(Expected.str(), Result) << "Formatted:\n" << Result; 62 } 63 }; 64 65 TEST_F(FormatTestJS, UnderstandsJavaScriptOperators) { 66 verifyFormat("a == = b;"); 67 verifyFormat("a != = b;"); 68 69 verifyFormat("a === b;"); 70 verifyFormat("aaaaaaa ===\n b;", getGoogleJSStyleWithColumns(10)); 71 verifyFormat("a !== b;"); 72 verifyFormat("aaaaaaa !==\n b;", getGoogleJSStyleWithColumns(10)); 73 verifyFormat("if (a + b + c +\n" 74 " d !==\n" 75 " e + f + g)\n" 76 " q();", 77 getGoogleJSStyleWithColumns(20)); 78 79 verifyFormat("a >> >= b;"); 80 81 verifyFormat("a >>> b;"); 82 verifyFormat("aaaaaaa >>>\n b;", getGoogleJSStyleWithColumns(10)); 83 verifyFormat("a >>>= b;"); 84 verifyFormat("aaaaaaa >>>=\n b;", getGoogleJSStyleWithColumns(10)); 85 verifyFormat("if (a + b + c +\n" 86 " d >>>\n" 87 " e + f + g)\n" 88 " q();", 89 getGoogleJSStyleWithColumns(20)); 90 verifyFormat("var x = aaaaaaaaaa ?\n" 91 " bbbbbb :\n" 92 " ccc;", 93 getGoogleJSStyleWithColumns(20)); 94 95 verifyFormat("var b = a.map((x) => x + 1);"); 96 verifyFormat("return ('aaa') in bbbb;"); 97 verifyFormat("var x = aaaaaaaaaaaaaaaaaaaaaaaaa() in\n" 98 " aaaa.aaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 99 FormatStyle Style = getGoogleJSStyleWithColumns(80); 100 Style.AlignOperands = true; 101 verifyFormat("var x = aaaaaaaaaaaaaaaaaaaaaaaaa() in\n" 102 " aaaa.aaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;", 103 Style); 104 Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All; 105 verifyFormat("var x = aaaaaaaaaaaaaaaaaaaaaaaaa()\n" 106 " in aaaa.aaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;", 107 Style); 108 109 // ES6 spread operator. 110 verifyFormat("someFunction(...a);"); 111 verifyFormat("var x = [1, ...a, 2];"); 112 } 113 114 TEST_F(FormatTestJS, UnderstandsAmpAmp) { 115 verifyFormat("e && e.SomeFunction();"); 116 } 117 118 TEST_F(FormatTestJS, LiteralOperatorsCanBeKeywords) { 119 verifyFormat("not.and.or.not_eq = 1;"); 120 } 121 122 TEST_F(FormatTestJS, ReservedWords) { 123 // JavaScript reserved words (aka keywords) are only illegal when used as 124 // Identifiers, but are legal as IdentifierNames. 125 verifyFormat("x.class.struct = 1;"); 126 verifyFormat("x.case = 1;"); 127 verifyFormat("x.interface = 1;"); 128 verifyFormat("x.for = 1;"); 129 verifyFormat("x.of() = 1;"); 130 verifyFormat("x.in() = 1;"); 131 verifyFormat("x.let() = 1;"); 132 verifyFormat("x.var() = 1;"); 133 verifyFormat("x = {\n" 134 " a: 12,\n" 135 " interface: 1,\n" 136 " switch: 1,\n" 137 "};"); 138 verifyFormat("var struct = 2;"); 139 verifyFormat("var union = 2;"); 140 verifyFormat("var interface = 2;"); 141 verifyFormat("interface = 2;"); 142 verifyFormat("x = interface instanceof y;"); 143 } 144 145 TEST_F(FormatTestJS, CppKeywords) { 146 // Make sure we don't mess stuff up because of C++ keywords. 147 verifyFormat("return operator && (aa);"); 148 } 149 150 TEST_F(FormatTestJS, ES6DestructuringAssignment) { 151 verifyFormat("var [a, b, c] = [1, 2, 3];"); 152 verifyFormat("const [a, b, c] = [1, 2, 3];"); 153 verifyFormat("let [a, b, c] = [1, 2, 3];"); 154 verifyFormat("var {a, b} = {a: 1, b: 2};"); 155 verifyFormat("let {a, b} = {a: 1, b: 2};"); 156 } 157 158 TEST_F(FormatTestJS, ContainerLiterals) { 159 verifyFormat("var x = {y: function(a) { return a; }};"); 160 verifyFormat("return {\n" 161 " link: function() {\n" 162 " f(); //\n" 163 " }\n" 164 "};"); 165 verifyFormat("return {\n" 166 " a: a,\n" 167 " link: function() {\n" 168 " f(); //\n" 169 " }\n" 170 "};"); 171 verifyFormat("return {\n" 172 " a: a,\n" 173 " link: function() {\n" 174 " f(); //\n" 175 " },\n" 176 " link: function() {\n" 177 " f(); //\n" 178 " }\n" 179 "};"); 180 verifyFormat("var stuff = {\n" 181 " // comment for update\n" 182 " update: false,\n" 183 " // comment for modules\n" 184 " modules: false,\n" 185 " // comment for tasks\n" 186 " tasks: false\n" 187 "};"); 188 verifyFormat("return {\n" 189 " 'finish':\n" 190 " //\n" 191 " a\n" 192 "};"); 193 verifyFormat("var obj = {\n" 194 " fooooooooo: function(x) {\n" 195 " return x.zIsTooLongForOneLineWithTheDeclarationLine();\n" 196 " }\n" 197 "};"); 198 // Simple object literal, as opposed to enum style below. 199 verifyFormat("var obj = {a: 123};"); 200 // Enum style top level assignment. 201 verifyFormat("X = {\n a: 123\n};"); 202 verifyFormat("X.Y = {\n a: 123\n};"); 203 // But only on the top level, otherwise its a plain object literal assignment. 204 verifyFormat("function x() {\n" 205 " y = {z: 1};\n" 206 "}"); 207 verifyFormat("x = foo && {a: 123};"); 208 209 // Arrow functions in object literals. 210 verifyFormat("var x = {y: (a) => { return a; }};"); 211 verifyFormat("var x = {y: (a) => a};"); 212 213 // Computed keys. 214 verifyFormat("var x = {[a]: 1, b: 2, [c]: 3};"); 215 verifyFormat("var x = {\n" 216 " [a]: 1,\n" 217 " b: 2,\n" 218 " [c]: 3,\n" 219 "};"); 220 221 // Object literals can leave out labels. 222 verifyFormat("f({a}, () => {\n" 223 " g(); //\n" 224 "});"); 225 226 // Keys can be quoted. 227 verifyFormat("var x = {\n" 228 " a: a,\n" 229 " b: b,\n" 230 " 'c': c,\n" 231 "};"); 232 } 233 234 TEST_F(FormatTestJS, MethodsInObjectLiterals) { 235 verifyFormat("var o = {\n" 236 " value: 'test',\n" 237 " get value() { // getter\n" 238 " return this.value;\n" 239 " }\n" 240 "};"); 241 verifyFormat("var o = {\n" 242 " value: 'test',\n" 243 " set value(val) { // setter\n" 244 " this.value = val;\n" 245 " }\n" 246 "};"); 247 verifyFormat("var o = {\n" 248 " value: 'test',\n" 249 " someMethod(val) { // method\n" 250 " doSomething(this.value + val);\n" 251 " }\n" 252 "};"); 253 verifyFormat("var o = {\n" 254 " someMethod(val) { // method\n" 255 " doSomething(this.value + val);\n" 256 " },\n" 257 " someOtherMethod(val) { // method\n" 258 " doSomething(this.value + val);\n" 259 " }\n" 260 "};"); 261 } 262 263 TEST_F(FormatTestJS, SpacesInContainerLiterals) { 264 verifyFormat("var arr = [1, 2, 3];"); 265 verifyFormat("f({a: 1, b: 2, c: 3});"); 266 267 verifyFormat("var object_literal_with_long_name = {\n" 268 " a: 'aaaaaaaaaaaaaaaaaa',\n" 269 " b: 'bbbbbbbbbbbbbbbbbb'\n" 270 "};"); 271 272 verifyFormat("f({a: 1, b: 2, c: 3});", 273 getChromiumStyle(FormatStyle::LK_JavaScript)); 274 verifyFormat("f({'a': [{}]});"); 275 } 276 277 TEST_F(FormatTestJS, SingleQuotedStrings) { 278 verifyFormat("this.function('', true);"); 279 } 280 281 TEST_F(FormatTestJS, GoogScopes) { 282 verifyFormat("goog.scope(function() {\n" 283 "var x = a.b;\n" 284 "var y = c.d;\n" 285 "}); // goog.scope"); 286 verifyFormat("goog.scope(function() {\n" 287 "// test\n" 288 "var x = 0;\n" 289 "// test\n" 290 "});"); 291 } 292 293 TEST_F(FormatTestJS, GoogModules) { 294 verifyFormat("goog.module('this.is.really.absurdly.long');", 295 getGoogleJSStyleWithColumns(40)); 296 verifyFormat("goog.require('this.is.really.absurdly.long');", 297 getGoogleJSStyleWithColumns(40)); 298 verifyFormat("goog.provide('this.is.really.absurdly.long');", 299 getGoogleJSStyleWithColumns(40)); 300 verifyFormat("var long = goog.require('this.is.really.absurdly.long');", 301 getGoogleJSStyleWithColumns(40)); 302 verifyFormat("goog.setTestOnly('this.is.really.absurdly.long');", 303 getGoogleJSStyleWithColumns(40)); 304 verifyFormat("goog.forwardDeclare('this.is.really.absurdly.long');", 305 getGoogleJSStyleWithColumns(40)); 306 307 // These should be wrapped normally. 308 verifyFormat( 309 "var MyLongClassName =\n" 310 " goog.module.get('my.long.module.name.followedBy.MyLongClassName');"); 311 } 312 313 TEST_F(FormatTestJS, FormatsFreestandingFunctions) { 314 verifyFormat("function outer1(a, b) {\n" 315 " function inner1(a, b) { return a; }\n" 316 " inner1(a, b);\n" 317 "}\n" 318 "function outer2(a, b) {\n" 319 " function inner2(a, b) { return a; }\n" 320 " inner2(a, b);\n" 321 "}"); 322 verifyFormat("function f() {}"); 323 } 324 325 TEST_F(FormatTestJS, GeneratorFunctions) { 326 verifyFormat("function* f() {\n" 327 " let x = 1;\n" 328 " yield x;\n" 329 " yield* something();\n" 330 "}"); 331 verifyFormat("function*\n" 332 " f() {\n" 333 "}", 334 getGoogleJSStyleWithColumns(8)); 335 verifyFormat("export function* f() {\n" 336 " yield 1;\n" 337 "}\n"); 338 verifyFormat("class X {\n" 339 " * generatorMethod() { yield x; }\n" 340 "}"); 341 } 342 343 TEST_F(FormatTestJS, AsyncFunctions) { 344 verifyFormat("async function f() {\n" 345 " let x = 1;\n" 346 " return fetch(x);\n" 347 "}"); 348 verifyFormat("async function* f() {\n" 349 " yield fetch(x);\n" 350 "}"); 351 verifyFormat("export async function f() {\n" 352 " return fetch(x);\n" 353 "}"); 354 verifyFormat("class X {\n" 355 " async asyncMethod() { return fetch(1); }\n" 356 "}"); 357 verifyFormat("function initialize() {\n" 358 " // Comment.\n" 359 " return async.then();\n" 360 "}\n"); 361 } 362 363 TEST_F(FormatTestJS, ArrayLiterals) { 364 verifyFormat("var aaaaa: List<SomeThing> =\n" 365 " [new SomeThingAAAAAAAAAAAA(), new SomeThingBBBBBBBBB()];"); 366 verifyFormat("return [\n" 367 " aaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 368 " ccccccccccccccccccccccccccc\n" 369 "];"); 370 verifyFormat("return [\n" 371 " aaaa().bbbbbbbb('A'),\n" 372 " aaaa().bbbbbbbb('B'),\n" 373 " aaaa().bbbbbbbb('C'),\n" 374 "];"); 375 verifyFormat("var someVariable = SomeFunction([\n" 376 " aaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 377 " ccccccccccccccccccccccccccc\n" 378 "]);"); 379 verifyFormat("var someVariable = SomeFunction([\n" 380 " [aaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbb],\n" 381 "]);", 382 getGoogleJSStyleWithColumns(51)); 383 verifyFormat("var someVariable = SomeFunction(aaaa, [\n" 384 " aaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 385 " ccccccccccccccccccccccccccc\n" 386 "]);"); 387 verifyFormat("var someVariable = SomeFunction(\n" 388 " aaaa,\n" 389 " [\n" 390 " aaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 391 " cccccccccccccccccccccccccc\n" 392 " ],\n" 393 " aaaa);"); 394 verifyFormat("var aaaa = aaaaa || // wrap\n" 395 " [];"); 396 397 verifyFormat("someFunction([], {a: a});"); 398 } 399 400 TEST_F(FormatTestJS, ColumnLayoutForArrayLiterals) { 401 verifyFormat("var array = [\n" 402 " a, a, a, a, a, a, a, a, a, a, a, a, a, a, a,\n" 403 " a, a, a, a, a, a, a, a, a, a, a, a, a, a, a,\n" 404 "];"); 405 verifyFormat("var array = someFunction([\n" 406 " a, a, a, a, a, a, a, a, a, a, a, a, a, a, a,\n" 407 " a, a, a, a, a, a, a, a, a, a, a, a, a, a, a,\n" 408 "]);"); 409 } 410 411 TEST_F(FormatTestJS, FunctionLiterals) { 412 verifyFormat("doFoo(function() {});"); 413 verifyFormat("doFoo(function() { return 1; });"); 414 verifyFormat("var func = function() {\n" 415 " return 1;\n" 416 "};"); 417 verifyFormat("var func = //\n" 418 " function() {\n" 419 " return 1;\n" 420 "};"); 421 verifyFormat("return {\n" 422 " body: {\n" 423 " setAttribute: function(key, val) { this[key] = val; },\n" 424 " getAttribute: function(key) { return this[key]; },\n" 425 " style: {direction: ''}\n" 426 " }\n" 427 "};"); 428 verifyFormat("abc = xyz ? function() {\n" 429 " return 1;\n" 430 "} : function() {\n" 431 " return -1;\n" 432 "};"); 433 434 verifyFormat("var closure = goog.bind(\n" 435 " function() { // comment\n" 436 " foo();\n" 437 " bar();\n" 438 " },\n" 439 " this, arg1IsReallyLongAndNeeedsLineBreaks,\n" 440 " arg3IsReallyLongAndNeeedsLineBreaks);"); 441 verifyFormat("var closure = goog.bind(function() { // comment\n" 442 " foo();\n" 443 " bar();\n" 444 "}, this);"); 445 verifyFormat("return {\n" 446 " a: 'E',\n" 447 " b: function() {\n" 448 " return function() {\n" 449 " f(); //\n" 450 " };\n" 451 " }\n" 452 "};"); 453 verifyFormat("{\n" 454 " var someVariable = function(x) {\n" 455 " return x.zIsTooLongForOneLineWithTheDeclarationLine();\n" 456 " };\n" 457 "}"); 458 verifyFormat("someLooooooooongFunction(\n" 459 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 460 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 461 " function(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n" 462 " // code\n" 463 " });"); 464 465 verifyFormat("f({a: function() { return 1; }});", 466 getGoogleJSStyleWithColumns(33)); 467 verifyFormat("f({\n" 468 " a: function() { return 1; }\n" 469 "});", 470 getGoogleJSStyleWithColumns(32)); 471 472 verifyFormat("return {\n" 473 " a: function SomeFunction() {\n" 474 " // ...\n" 475 " return 1;\n" 476 " }\n" 477 "};"); 478 verifyFormat("this.someObject.doSomething(aaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 479 " .then(goog.bind(function(aaaaaaaaaaa) {\n" 480 " someFunction();\n" 481 " someFunction();\n" 482 " }, this), aaaaaaaaaaaaaaaaa);"); 483 484 verifyFormat("someFunction(goog.bind(function() {\n" 485 " doSomething();\n" 486 " doSomething();\n" 487 "}, this), goog.bind(function() {\n" 488 " doSomething();\n" 489 " doSomething();\n" 490 "}, this));"); 491 492 // FIXME: This is bad, we should be wrapping before "function() {". 493 verifyFormat("someFunction(function() {\n" 494 " doSomething(); // break\n" 495 "})\n" 496 " .doSomethingElse(\n" 497 " // break\n" 498 " );"); 499 } 500 501 TEST_F(FormatTestJS, InliningFunctionLiterals) { 502 FormatStyle Style = getGoogleStyle(FormatStyle::LK_JavaScript); 503 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline; 504 verifyFormat("var func = function() {\n" 505 " return 1;\n" 506 "};", 507 Style); 508 verifyFormat("var func = doSomething(function() { return 1; });", Style); 509 verifyFormat("var outer = function() {\n" 510 " var inner = function() { return 1; }\n" 511 "};", 512 Style); 513 verifyFormat("function outer1(a, b) {\n" 514 " function inner1(a, b) { return a; }\n" 515 "}", 516 Style); 517 518 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All; 519 verifyFormat("var func = function() { return 1; };", Style); 520 verifyFormat("var func = doSomething(function() { return 1; });", Style); 521 verifyFormat( 522 "var outer = function() { var inner = function() { return 1; } };", 523 Style); 524 verifyFormat("function outer1(a, b) {\n" 525 " function inner1(a, b) { return a; }\n" 526 "}", 527 Style); 528 529 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None; 530 verifyFormat("var func = function() {\n" 531 " return 1;\n" 532 "};", 533 Style); 534 verifyFormat("var func = doSomething(function() {\n" 535 " return 1;\n" 536 "});", 537 Style); 538 verifyFormat("var outer = function() {\n" 539 " var inner = function() {\n" 540 " return 1;\n" 541 " }\n" 542 "};", 543 Style); 544 verifyFormat("function outer1(a, b) {\n" 545 " function inner1(a, b) {\n" 546 " return a;\n" 547 " }\n" 548 "}", 549 Style); 550 551 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Empty; 552 verifyFormat("var func = function() {\n" 553 " return 1;\n" 554 "};", 555 Style); 556 } 557 558 TEST_F(FormatTestJS, MultipleFunctionLiterals) { 559 verifyFormat("promise.then(\n" 560 " function success() {\n" 561 " doFoo();\n" 562 " doBar();\n" 563 " },\n" 564 " function error() {\n" 565 " doFoo();\n" 566 " doBaz();\n" 567 " },\n" 568 " []);\n"); 569 verifyFormat("promise.then(\n" 570 " function success() {\n" 571 " doFoo();\n" 572 " doBar();\n" 573 " },\n" 574 " [],\n" 575 " function error() {\n" 576 " doFoo();\n" 577 " doBaz();\n" 578 " });\n"); 579 verifyFormat("promise.then(\n" 580 " [],\n" 581 " function success() {\n" 582 " doFoo();\n" 583 " doBar();\n" 584 " },\n" 585 " function error() {\n" 586 " doFoo();\n" 587 " doBaz();\n" 588 " });\n"); 589 590 verifyFormat("getSomeLongPromise()\n" 591 " .then(function(value) { body(); })\n" 592 " .thenCatch(function(error) {\n" 593 " body();\n" 594 " body();\n" 595 " });"); 596 verifyFormat("getSomeLongPromise()\n" 597 " .then(function(value) {\n" 598 " body();\n" 599 " body();\n" 600 " })\n" 601 " .thenCatch(function(error) {\n" 602 " body();\n" 603 " body();\n" 604 " });"); 605 606 verifyFormat("getSomeLongPromise()\n" 607 " .then(function(value) { body(); })\n" 608 " .thenCatch(function(error) { body(); });"); 609 610 verifyFormat("return [aaaaaaaaaaaaaaaaaaaaaa]\n" 611 " .aaaaaaa(function() {\n" 612 " //\n" 613 " })\n" 614 " .bbbbbb();"); 615 } 616 617 TEST_F(FormatTestJS, ArrowFunctions) { 618 verifyFormat("var x = (a) => {\n" 619 " return a;\n" 620 "};"); 621 verifyFormat("var x = (a) => {\n" 622 " function y() { return 42; }\n" 623 " return a;\n" 624 "};"); 625 verifyFormat("var x = (a: type): {some: type} => {\n" 626 " return a;\n" 627 "};"); 628 verifyFormat("var x = (a) => a;"); 629 verifyFormat("return () => [];"); 630 verifyFormat("var aaaaaaaaaaaaaaaaaaaa = {\n" 631 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa:\n" 632 " (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 633 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) =>\n" 634 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 635 "};"); 636 verifyFormat("var a = a.aaaaaaa(\n" 637 " (a: a) => aaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbbbb) &&\n" 638 " aaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbb));"); 639 verifyFormat("var a = a.aaaaaaa(\n" 640 " (a: a) => aaaaaaaaaaaaaaaaaaaaa(bbbbbbbbb) ?\n" 641 " aaaaaaaaaaaaaaaaaaaaa(bbbbbbb) :\n" 642 " aaaaaaaaaaaaaaaaaaaaa(bbbbbbb));"); 643 644 // FIXME: This is bad, we should be wrapping before "() => {". 645 verifyFormat("someFunction(() => {\n" 646 " doSomething(); // break\n" 647 "})\n" 648 " .doSomethingElse(\n" 649 " // break\n" 650 " );"); 651 } 652 653 TEST_F(FormatTestJS, ReturnStatements) { 654 verifyFormat("function() {\n" 655 " return [hello, world];\n" 656 "}"); 657 } 658 659 TEST_F(FormatTestJS, ForLoops) { 660 verifyFormat("for (var i in [2, 3]) {\n" 661 "}"); 662 verifyFormat("for (var i of [2, 3]) {\n" 663 "}"); 664 verifyFormat("for (let {a, b} of x) {\n" 665 "}"); 666 verifyFormat("for (let {a, b} in x) {\n" 667 "}"); 668 } 669 670 TEST_F(FormatTestJS, WrapRespectsAutomaticSemicolonInsertion) { 671 // The following statements must not wrap, as otherwise the program meaning 672 // would change due to automatic semicolon insertion. 673 // See http://www.ecma-international.org/ecma-262/5.1/#sec-7.9.1. 674 verifyFormat("return aaaaa;", getGoogleJSStyleWithColumns(10)); 675 verifyFormat("continue aaaaa;", getGoogleJSStyleWithColumns(10)); 676 verifyFormat("break aaaaa;", getGoogleJSStyleWithColumns(10)); 677 verifyFormat("throw aaaaa;", getGoogleJSStyleWithColumns(10)); 678 verifyFormat("aaaaaaaaa++;", getGoogleJSStyleWithColumns(10)); 679 verifyFormat("aaaaaaaaa--;", getGoogleJSStyleWithColumns(10)); 680 verifyFormat("return [\n" 681 " aaa\n" 682 "];", 683 getGoogleJSStyleWithColumns(12)); 684 } 685 686 TEST_F(FormatTestJS, AutomaticSemicolonInsertionHeuristic) { 687 verifyFormat("a\n" 688 "b;", 689 " a \n" 690 " b ;"); 691 verifyFormat("a()\n" 692 "b;", 693 " a ()\n" 694 " b ;"); 695 verifyFormat("a[b]\n" 696 "c;", 697 "a [b]\n" 698 "c ;"); 699 verifyFormat("1\n" 700 "a;", 701 "1 \n" 702 "a ;"); 703 verifyFormat("a\n" 704 "1;", 705 "a \n" 706 "1 ;"); 707 verifyFormat("a\n" 708 "'x';", 709 "a \n" 710 " 'x';"); 711 verifyFormat("a++\n" 712 "b;", 713 "a ++\n" 714 "b ;"); 715 verifyFormat("a\n" 716 "!b && c;", 717 "a \n" 718 " ! b && c;"); 719 verifyFormat("a\n" 720 "if (1) f();", 721 " a\n" 722 " if (1) f();"); 723 verifyFormat("a\n" 724 "class X {}", 725 " a\n" 726 " class X {}"); 727 verifyFormat("var a", "var\n" 728 "a"); 729 verifyFormat("x instanceof String", "x\n" 730 "instanceof\n" 731 "String"); 732 verifyFormat("function f(@Foo bar) {}", "function f(@Foo\n" 733 " bar) {}"); 734 } 735 736 TEST_F(FormatTestJS, ClosureStyleCasts) { 737 verifyFormat("var x = /** @type {foo} */ (bar);"); 738 } 739 740 TEST_F(FormatTestJS, TryCatch) { 741 verifyFormat("try {\n" 742 " f();\n" 743 "} catch (e) {\n" 744 " g();\n" 745 "} finally {\n" 746 " h();\n" 747 "}"); 748 749 // But, of course, "catch" is a perfectly fine function name in JavaScript. 750 verifyFormat("someObject.catch();"); 751 verifyFormat("someObject.new();"); 752 verifyFormat("someObject.delete();"); 753 } 754 755 TEST_F(FormatTestJS, StringLiteralConcatenation) { 756 verifyFormat("var literal = 'hello ' +\n" 757 " 'world';"); 758 } 759 760 TEST_F(FormatTestJS, RegexLiteralClassification) { 761 // Regex literals. 762 verifyFormat("var regex = /abc/;"); 763 verifyFormat("f(/abc/);"); 764 verifyFormat("f(abc, /abc/);"); 765 verifyFormat("some_map[/abc/];"); 766 verifyFormat("var x = a ? /abc/ : /abc/;"); 767 verifyFormat("for (var i = 0; /abc/.test(s[i]); i++) {\n}"); 768 verifyFormat("var x = !/abc/.test(y);"); 769 verifyFormat("var x = a && /abc/.test(y);"); 770 verifyFormat("var x = a || /abc/.test(y);"); 771 verifyFormat("var x = a + /abc/.search(y);"); 772 verifyFormat("/abc/.search(y);"); 773 verifyFormat("var regexs = {/abc/, /abc/};"); 774 verifyFormat("return /abc/;"); 775 776 // Not regex literals. 777 verifyFormat("var a = a / 2 + b / 3;"); 778 verifyFormat("var a = a++ / 2;"); 779 // Prefix unary can operate on regex literals, not that it makes sense. 780 verifyFormat("var a = ++/a/;"); 781 782 // This is a known issue, regular expressions are incorrectly detected if 783 // directly following a closing parenthesis. 784 verifyFormat("if (foo) / bar /.exec(baz);"); 785 } 786 787 TEST_F(FormatTestJS, RegexLiteralSpecialCharacters) { 788 verifyFormat("var regex = /=/;"); 789 verifyFormat("var regex = /a*/;"); 790 verifyFormat("var regex = /a+/;"); 791 verifyFormat("var regex = /a?/;"); 792 verifyFormat("var regex = /.a./;"); 793 verifyFormat("var regex = /a\\*/;"); 794 verifyFormat("var regex = /^a$/;"); 795 verifyFormat("var regex = /\\/a/;"); 796 verifyFormat("var regex = /(?:x)/;"); 797 verifyFormat("var regex = /x(?=y)/;"); 798 verifyFormat("var regex = /x(?!y)/;"); 799 verifyFormat("var regex = /x|y/;"); 800 verifyFormat("var regex = /a{2}/;"); 801 verifyFormat("var regex = /a{1,3}/;"); 802 803 verifyFormat("var regex = /[abc]/;"); 804 verifyFormat("var regex = /[^abc]/;"); 805 verifyFormat("var regex = /[\\b]/;"); 806 verifyFormat("var regex = /[/]/;"); 807 verifyFormat("var regex = /[\\/]/;"); 808 verifyFormat("var regex = /\\[/;"); 809 verifyFormat("var regex = /\\\\[/]/;"); 810 verifyFormat("var regex = /}[\"]/;"); 811 verifyFormat("var regex = /}[/\"]/;"); 812 verifyFormat("var regex = /}[\"/]/;"); 813 814 verifyFormat("var regex = /\\b/;"); 815 verifyFormat("var regex = /\\B/;"); 816 verifyFormat("var regex = /\\d/;"); 817 verifyFormat("var regex = /\\D/;"); 818 verifyFormat("var regex = /\\f/;"); 819 verifyFormat("var regex = /\\n/;"); 820 verifyFormat("var regex = /\\r/;"); 821 verifyFormat("var regex = /\\s/;"); 822 verifyFormat("var regex = /\\S/;"); 823 verifyFormat("var regex = /\\t/;"); 824 verifyFormat("var regex = /\\v/;"); 825 verifyFormat("var regex = /\\w/;"); 826 verifyFormat("var regex = /\\W/;"); 827 verifyFormat("var regex = /a(a)\\1/;"); 828 verifyFormat("var regex = /\\0/;"); 829 verifyFormat("var regex = /\\\\/g;"); 830 verifyFormat("var regex = /\\a\\\\/g;"); 831 verifyFormat("var regex = /\a\\//g;"); 832 verifyFormat("var regex = /a\\//;\n" 833 "var x = 0;"); 834 verifyFormat("var regex = /'/g;", "var regex = /'/g ;"); 835 verifyFormat("var regex = /'/g; //'", "var regex = /'/g ; //'"); 836 verifyFormat("var regex = /\\/*/;\n" 837 "var x = 0;", 838 "var regex = /\\/*/;\n" 839 "var x=0;"); 840 verifyFormat("var x = /a\\//;", "var x = /a\\// \n;"); 841 verifyFormat("var regex = /\"/;", getGoogleJSStyleWithColumns(16)); 842 verifyFormat("var regex =\n" 843 " /\"/;", 844 getGoogleJSStyleWithColumns(15)); 845 verifyFormat("var regex = //\n" 846 " /a/;"); 847 verifyFormat("var regexs = [\n" 848 " /d/, //\n" 849 " /aa/, //\n" 850 "];"); 851 } 852 853 TEST_F(FormatTestJS, RegexLiteralModifiers) { 854 verifyFormat("var regex = /abc/g;"); 855 verifyFormat("var regex = /abc/i;"); 856 verifyFormat("var regex = /abc/m;"); 857 verifyFormat("var regex = /abc/y;"); 858 } 859 860 TEST_F(FormatTestJS, RegexLiteralLength) { 861 verifyFormat("var regex = /aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/;", 862 getGoogleJSStyleWithColumns(60)); 863 verifyFormat("var regex =\n" 864 " /aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/;", 865 getGoogleJSStyleWithColumns(60)); 866 verifyFormat("var regex = /\\xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/;", 867 getGoogleJSStyleWithColumns(50)); 868 } 869 870 TEST_F(FormatTestJS, RegexLiteralExamples) { 871 verifyFormat("var regex = search.match(/(?:\?|&)times=([^?&]+)/i);"); 872 } 873 874 TEST_F(FormatTestJS, TypeAnnotations) { 875 verifyFormat("var x: string;"); 876 verifyFormat("var x: {a: string; b: number;} = {};"); 877 verifyFormat("function x(): string {\n return 'x';\n}"); 878 verifyFormat("function x(): {x: string} {\n return {x: 'x'};\n}"); 879 verifyFormat("function x(y: string): string {\n return 'x';\n}"); 880 verifyFormat("for (var y: string in x) {\n x();\n}"); 881 verifyFormat("for (var y: string of x) {\n x();\n}"); 882 verifyFormat("function x(y: {a?: number;} = {}): number {\n" 883 " return 12;\n" 884 "}"); 885 verifyFormat("((a: string, b: number): string => a + b);"); 886 verifyFormat("var x: (y: number) => string;"); 887 verifyFormat("var x: P<string, (a: number) => string>;"); 888 verifyFormat("var x = {y: function(): z { return 1; }};"); 889 verifyFormat("var x = {y: function(): {a: number} { return 1; }};"); 890 verifyFormat("function someFunc(args: string[]):\n" 891 " {longReturnValue: string[]} {}", 892 getGoogleJSStyleWithColumns(60)); 893 } 894 895 TEST_F(FormatTestJS, UnionIntersectionTypes) { 896 verifyFormat("let x: A|B = A | B;"); 897 verifyFormat("let x: A&B|C = A & B;"); 898 verifyFormat("let x: Foo<A|B> = new Foo<A|B>();"); 899 verifyFormat("function(x: A|B): C&D {}"); 900 verifyFormat("function(x: A|B = A | B): C&D {}"); 901 } 902 903 TEST_F(FormatTestJS, ClassDeclarations) { 904 verifyFormat("class C {\n x: string = 12;\n}"); 905 verifyFormat("class C {\n x(): string => 12;\n}"); 906 verifyFormat("class C {\n ['x' + 2]: string = 12;\n}"); 907 verifyFormat("class C {\n private x: string = 12;\n}"); 908 verifyFormat("class C {\n private static x: string = 12;\n}"); 909 verifyFormat("class C {\n static x(): string { return 'asd'; }\n}"); 910 verifyFormat("class C extends P implements I {}"); 911 verifyFormat("class C extends p.P implements i.I {}"); 912 verifyFormat("class Test {\n" 913 " aaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaaaa):\n" 914 " aaaaaaaaaaaaaaaaaaaaaa {}\n" 915 "}"); 916 verifyFormat("foo = class Name {\n" 917 " constructor() {}\n" 918 "};"); 919 verifyFormat("foo = class {\n" 920 " constructor() {}\n" 921 "};"); 922 verifyFormat("class C {\n" 923 " x: {y: Z;} = {};\n" 924 " private y: {y: Z;} = {};\n" 925 "}"); 926 927 // ':' is not a type declaration here. 928 verifyFormat("class X {\n" 929 " subs = {\n" 930 " 'b': {\n" 931 " 'c': 1,\n" 932 " },\n" 933 " };\n" 934 "}"); 935 } 936 937 TEST_F(FormatTestJS, InterfaceDeclarations) { 938 verifyFormat("interface I {\n" 939 " x: string;\n" 940 " enum: string[];\n" 941 " enum?: string[];\n" 942 "}\n" 943 "var y;"); 944 // Ensure that state is reset after parsing the interface. 945 verifyFormat("interface a {}\n" 946 "export function b() {}\n" 947 "var x;"); 948 949 // Arrays of object type literals. 950 verifyFormat("interface I {\n" 951 " o: {}[];\n" 952 "}"); 953 } 954 955 TEST_F(FormatTestJS, EnumDeclarations) { 956 verifyFormat("enum Foo {\n" 957 " A = 1,\n" 958 " B\n" 959 "}"); 960 verifyFormat("export /* somecomment*/ enum Foo {\n" 961 " A = 1,\n" 962 " B\n" 963 "}"); 964 verifyFormat("enum Foo {\n" 965 " A = 1, // comment\n" 966 " B\n" 967 "}\n" 968 "var x = 1;"); 969 } 970 971 TEST_F(FormatTestJS, MetadataAnnotations) { 972 verifyFormat("@A\nclass C {\n}"); 973 verifyFormat("@A({arg: 'value'})\nclass C {\n}"); 974 verifyFormat("@A\n@B\nclass C {\n}"); 975 verifyFormat("class C {\n @A x: string;\n}"); 976 verifyFormat("class C {\n" 977 " @A\n" 978 " private x(): string {\n" 979 " return 'y';\n" 980 " }\n" 981 "}"); 982 verifyFormat("class C {\n" 983 " private x(@A x: string) {}\n" 984 "}"); 985 verifyFormat("class X {}\n" 986 "class Y {}"); 987 } 988 989 TEST_F(FormatTestJS, TypeAliases) { 990 verifyFormat("type X = number;\n" 991 "class C {}"); 992 verifyFormat("type X<Y> = Z<Y>;"); 993 verifyFormat("type X = {\n" 994 " y: number\n" 995 "};\n" 996 "class C {}"); 997 } 998 999 TEST_F(FormatTestJS, Modules) { 1000 verifyFormat("import SomeThing from 'some/module.js';"); 1001 verifyFormat("import {X, Y} from 'some/module.js';"); 1002 verifyFormat("import a, {X, Y} from 'some/module.js';"); 1003 verifyFormat("import {VeryLongImportsAreAnnoying, VeryLongImportsAreAnnoying," 1004 " VeryLongImportsAreAnnoying, VeryLongImportsAreAnnoying" 1005 "} from 'some/module.js';"); 1006 verifyFormat("import {X, Y,} from 'some/module.js';"); 1007 verifyFormat("import {X as myLocalX, Y as myLocalY} from 'some/module.js';"); 1008 verifyFormat("import * as lib from 'some/module.js';"); 1009 verifyFormat("var x = {import: 1};\nx.import = 2;"); 1010 1011 verifyFormat("export function fn() {\n" 1012 " return 'fn';\n" 1013 "}"); 1014 verifyFormat("export function A() {}\n" 1015 "export default function B() {}\n" 1016 "export function C() {}"); 1017 verifyFormat("export default () => {\n" 1018 " let x = 1;\n" 1019 " return x;\n" 1020 "}"); 1021 verifyFormat("export const x = 12;"); 1022 verifyFormat("export default class X {}"); 1023 verifyFormat("export {X, Y} from 'some/module.js';"); 1024 verifyFormat("export {X, Y,} from 'some/module.js';"); 1025 verifyFormat("export {SomeVeryLongExport as X, " 1026 "SomeOtherVeryLongExport as Y} from 'some/module.js';"); 1027 // export without 'from' is wrapped. 1028 verifyFormat("export let someRatherLongVariableName =\n" 1029 " someSurprisinglyLongVariable + someOtherRatherLongVar;"); 1030 // ... but not if from is just an identifier. 1031 verifyFormat("export {\n" 1032 " from as from,\n" 1033 " someSurprisinglyLongVariable\n" 1034 " as from\n" 1035 "};", 1036 getGoogleJSStyleWithColumns(20)); 1037 verifyFormat("export class C {\n" 1038 " x: number;\n" 1039 " y: string;\n" 1040 "}"); 1041 verifyFormat("export class X { y: number; }"); 1042 verifyFormat("export abstract class X { y: number; }"); 1043 verifyFormat("export default class X { y: number }"); 1044 verifyFormat("export default function() {\n return 1;\n}"); 1045 verifyFormat("export var x = 12;"); 1046 verifyFormat("class C {}\n" 1047 "export function f() {}\n" 1048 "var v;"); 1049 verifyFormat("export var x: number = 12;"); 1050 verifyFormat("export const y = {\n" 1051 " a: 1,\n" 1052 " b: 2\n" 1053 "};"); 1054 verifyFormat("export enum Foo {\n" 1055 " BAR,\n" 1056 " // adsdasd\n" 1057 " BAZ\n" 1058 "}"); 1059 verifyFormat("export default [\n" 1060 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 1061 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 1062 "];"); 1063 verifyFormat("export default [];"); 1064 verifyFormat("export default () => {};"); 1065 verifyFormat("export interface Foo { foo: number; }\n" 1066 "export class Bar {\n" 1067 " blah(): string { return this.blah; };\n" 1068 "}"); 1069 } 1070 1071 TEST_F(FormatTestJS, TemplateStrings) { 1072 // Keeps any whitespace/indentation within the template string. 1073 verifyFormat("var x = `hello\n" 1074 " ${ name }\n" 1075 " !`;", 1076 "var x = `hello\n" 1077 " ${ name }\n" 1078 " !`;"); 1079 1080 verifyFormat("var x =\n" 1081 " `hello ${world}` >= some();", 1082 getGoogleJSStyleWithColumns(34)); // Barely doesn't fit. 1083 verifyFormat("var x = `hello ${world}` >= some();", 1084 getGoogleJSStyleWithColumns(35)); // Barely fits. 1085 verifyFormat("var x = `hellö ${wörld}` >= söme();", 1086 getGoogleJSStyleWithColumns(35)); // Fits due to UTF-8. 1087 verifyFormat("var x = `hello\n" 1088 " ${world}` >=\n" 1089 " some();", 1090 "var x =\n" 1091 " `hello\n" 1092 " ${world}` >= some();", 1093 getGoogleJSStyleWithColumns(21)); // Barely doesn't fit. 1094 verifyFormat("var x = `hello\n" 1095 " ${world}` >= some();", 1096 "var x =\n" 1097 " `hello\n" 1098 " ${world}` >= some();", 1099 getGoogleJSStyleWithColumns(22)); // Barely fits. 1100 1101 verifyFormat("var x =\n" 1102 " `h`;", 1103 getGoogleJSStyleWithColumns(11)); 1104 verifyFormat("var x =\n `multi\n line`;", "var x = `multi\n line`;", 1105 getGoogleJSStyleWithColumns(13)); 1106 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 1107 " `aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa`);"); 1108 // Repro for an obscure width-miscounting issue with template strings. 1109 verifyFormat( 1110 "someLongVariable =\n" 1111 " " 1112 "`${logPrefix[11]}/${logPrefix[12]}/${logPrefix[13]}${logPrefix[14]}`;", 1113 "someLongVariable = " 1114 "`${logPrefix[11]}/${logPrefix[12]}/${logPrefix[13]}${logPrefix[14]}`;"); 1115 1116 // Make sure template strings get a proper ColumnWidth assigned, even if they 1117 // are first token in line. 1118 verifyFormat( 1119 "var a = aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 1120 " `aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa`;"); 1121 1122 // Two template strings. 1123 verifyFormat("var x = `hello` == `hello`;"); 1124 1125 // Comments in template strings. 1126 verifyFormat("var x = `//a`;\n" 1127 "var y;", 1128 "var x =\n `//a`;\n" 1129 "var y ;"); 1130 verifyFormat("var x = `/*a`;\n" 1131 "var y;", 1132 "var x =\n `/*a`;\n" 1133 "var y;"); 1134 // Unterminated string literals in a template string. 1135 verifyFormat("var x = `'`; // comment with matching quote '\n" 1136 "var y;"); 1137 verifyFormat("var x = `\"`; // comment with matching quote \"\n" 1138 "var y;"); 1139 verifyFormat("it(`'aaaaaaaaaaaaaaa `, aaaaaaaaa);", 1140 "it(`'aaaaaaaaaaaaaaa `, aaaaaaaaa) ;", 1141 getGoogleJSStyleWithColumns(40)); 1142 // Backticks in a comment - not a template string. 1143 verifyFormat("var x = 1 // `/*a`;\n" 1144 " ;", 1145 "var x =\n 1 // `/*a`;\n" 1146 " ;"); 1147 verifyFormat("/* ` */ var x = 1; /* ` */", "/* ` */ var x\n= 1; /* ` */"); 1148 // Comment spans multiple template strings. 1149 verifyFormat("var x = `/*a`;\n" 1150 "var y = ` */ `;", 1151 "var x =\n `/*a`;\n" 1152 "var y =\n ` */ `;"); 1153 // Escaped backtick. 1154 verifyFormat("var x = ` \\` a`;\n" 1155 "var y;", 1156 "var x = ` \\` a`;\n" 1157 "var y;"); 1158 } 1159 1160 TEST_F(FormatTestJS, CastSyntax) { 1161 verifyFormat("var x = <type>foo;"); 1162 verifyFormat("var x = foo as type;"); 1163 } 1164 1165 TEST_F(FormatTestJS, TypeArguments) { 1166 verifyFormat("class X<Y> {}"); 1167 verifyFormat("new X<Y>();"); 1168 verifyFormat("foo<Y>(a);"); 1169 verifyFormat("var x: X<Y>[];"); 1170 verifyFormat("class C extends D<E> implements F<G>, H<I> {}"); 1171 verifyFormat("function f(a: List<any> = null) {}"); 1172 verifyFormat("function f(): List<any> {}"); 1173 verifyFormat("function aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa():\n" 1174 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb {}"); 1175 verifyFormat("function aaaaaaaaaa(\n" 1176 " aaaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaaa,\n" 1177 " aaaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaaa):\n" 1178 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa {}"); 1179 } 1180 1181 TEST_F(FormatTestJS, UserDefinedTypeGuards) { 1182 verifyFormat( 1183 "function foo(check: Object):\n" 1184 " check is {foo: string, bar: string, baz: string, foobar: string} {\n" 1185 " return 'bar' in check;\n" 1186 "}\n"); 1187 } 1188 1189 TEST_F(FormatTestJS, OptionalTypes) { 1190 verifyFormat("function x(a?: b, c?, d?) {}"); 1191 verifyFormat("class X {\n" 1192 " y?: z;\n" 1193 " z?;\n" 1194 "}"); 1195 verifyFormat("interface X {\n" 1196 " y?(): z;\n" 1197 "}"); 1198 verifyFormat("x ? 1 : 2;"); 1199 verifyFormat("constructor({aa}: {\n" 1200 " aa?: string,\n" 1201 " aaaaaaaa?: string,\n" 1202 " aaaaaaaaaaaaaaa?: boolean,\n" 1203 " aaaaaa?: List<string>\n" 1204 "}) {}"); 1205 } 1206 1207 TEST_F(FormatTestJS, IndexSignature) { 1208 verifyFormat("var x: {[k: string]: v};"); 1209 } 1210 1211 TEST_F(FormatTestJS, WrapAfterParen) { 1212 verifyFormat("xxxxxxxxxxx(\n" 1213 " aaa, aaa);", 1214 getGoogleJSStyleWithColumns(20)); 1215 verifyFormat("xxxxxxxxxxx(\n" 1216 " aaa, aaa, aaa,\n" 1217 " aaa, aaa, aaa);", 1218 getGoogleJSStyleWithColumns(20)); 1219 verifyFormat("xxxxxxxxxxx(\n" 1220 " aaaaaaaaaaaaaaaaaaaaaaaa,\n" 1221 " function(x) {\n" 1222 " y(); //\n" 1223 " });", 1224 getGoogleJSStyleWithColumns(40)); 1225 verifyFormat("while (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&\n" 1226 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}"); 1227 } 1228 1229 TEST_F(FormatTestJS, JSDocAnnotations) { 1230 verifyFormat("/**\n" 1231 " * @export {this.is.a.long.path.to.a.Type}\n" 1232 " */", 1233 "/**\n" 1234 " * @export {this.is.a.long.path.to.a.Type}\n" 1235 " */", 1236 getGoogleJSStyleWithColumns(20)); 1237 } 1238 1239 TEST_F(FormatTestJS, RequoteStringsSingle) { 1240 verifyFormat("var x = 'foo';", "var x = \"foo\";"); 1241 verifyFormat("var x = 'fo\\'o\\'';", "var x = \"fo'o'\";"); 1242 verifyFormat("var x = 'fo\\'o\\'';", "var x = \"fo\\'o'\";"); 1243 verifyFormat( 1244 "var x =\n" 1245 " 'foo\\'';", 1246 // Code below is 15 chars wide, doesn't fit into the line with the 1247 // \ escape added. 1248 "var x = \"foo'\";", getGoogleJSStyleWithColumns(15)); 1249 // Removes no-longer needed \ escape from ". 1250 verifyFormat("var x = 'fo\"o';", "var x = \"fo\\\"o\";"); 1251 // Code below fits into 15 chars *after* removing the \ escape. 1252 verifyFormat("var x = 'fo\"o';", "var x = \"fo\\\"o\";", 1253 getGoogleJSStyleWithColumns(15)); 1254 verifyFormat("// clang-format off\n" 1255 "let x = \"double\";\n" 1256 "// clang-format on\n" 1257 "let x = 'single';\n", 1258 "// clang-format off\n" 1259 "let x = \"double\";\n" 1260 "// clang-format on\n" 1261 "let x = \"single\";\n"); 1262 } 1263 1264 TEST_F(FormatTestJS, RequoteStringsDouble) { 1265 FormatStyle DoubleQuotes = getGoogleStyle(FormatStyle::LK_JavaScript); 1266 DoubleQuotes.JavaScriptQuotes = FormatStyle::JSQS_Double; 1267 verifyFormat("var x = \"foo\";", DoubleQuotes); 1268 verifyFormat("var x = \"foo\";", "var x = 'foo';", DoubleQuotes); 1269 verifyFormat("var x = \"fo'o\";", "var x = 'fo\\'o';", DoubleQuotes); 1270 } 1271 1272 TEST_F(FormatTestJS, RequoteStringsLeave) { 1273 FormatStyle LeaveQuotes = getGoogleStyle(FormatStyle::LK_JavaScript); 1274 LeaveQuotes.JavaScriptQuotes = FormatStyle::JSQS_Leave; 1275 verifyFormat("var x = \"foo\";", LeaveQuotes); 1276 verifyFormat("var x = 'foo';", LeaveQuotes); 1277 } 1278 1279 TEST_F(FormatTestJS, SupportShebangLines) { 1280 verifyFormat("#!/usr/bin/env node\n" 1281 "var x = hello();", 1282 "#!/usr/bin/env node\n" 1283 "var x = hello();"); 1284 } 1285 1286 } // end namespace tooling 1287 } // end namespace clang 1288