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