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 FormattingAttemptStatus Status; 28 tooling::Replacements Replaces = 29 reformat(Style, Code, Ranges, "<stdin>", &Status); 30 EXPECT_TRUE(Status.FormatComplete); 31 auto Result = applyAllReplacements(Code, Replaces); 32 EXPECT_TRUE(static_cast<bool>(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, BlockComments) { 66 verifyFormat("/* aaaaaaaaaaaaa */ aaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 67 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 68 } 69 70 TEST_F(FormatTestJS, UnderstandsJavaScriptOperators) { 71 verifyFormat("a == = b;"); 72 verifyFormat("a != = b;"); 73 74 verifyFormat("a === b;"); 75 verifyFormat("aaaaaaa ===\n b;", getGoogleJSStyleWithColumns(10)); 76 verifyFormat("a !== b;"); 77 verifyFormat("aaaaaaa !==\n b;", getGoogleJSStyleWithColumns(10)); 78 verifyFormat("if (a + b + c +\n" 79 " d !==\n" 80 " e + f + g)\n" 81 " q();", 82 getGoogleJSStyleWithColumns(20)); 83 84 verifyFormat("a >> >= b;"); 85 86 verifyFormat("a >>> b;"); 87 verifyFormat("aaaaaaa >>>\n b;", getGoogleJSStyleWithColumns(10)); 88 verifyFormat("a >>>= b;"); 89 verifyFormat("aaaaaaa >>>=\n b;", getGoogleJSStyleWithColumns(10)); 90 verifyFormat("if (a + b + c +\n" 91 " d >>>\n" 92 " e + f + g)\n" 93 " q();", 94 getGoogleJSStyleWithColumns(20)); 95 verifyFormat("var x = aaaaaaaaaa ?\n" 96 " bbbbbb :\n" 97 " ccc;", 98 getGoogleJSStyleWithColumns(20)); 99 100 verifyFormat("var b = a.map((x) => x + 1);"); 101 verifyFormat("return ('aaa') in bbbb;"); 102 verifyFormat("var x = aaaaaaaaaaaaaaaaaaaaaaaaa() in\n" 103 " aaaa.aaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 104 FormatStyle Style = getGoogleJSStyleWithColumns(80); 105 Style.AlignOperands = true; 106 verifyFormat("var x = aaaaaaaaaaaaaaaaaaaaaaaaa() in\n" 107 " aaaa.aaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;", 108 Style); 109 Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All; 110 verifyFormat("var x = aaaaaaaaaaaaaaaaaaaaaaaaa()\n" 111 " in aaaa.aaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;", 112 Style); 113 114 // ES6 spread operator. 115 verifyFormat("someFunction(...a);"); 116 verifyFormat("var x = [1, ...a, 2];"); 117 } 118 119 TEST_F(FormatTestJS, UnderstandsAmpAmp) { 120 verifyFormat("e && e.SomeFunction();"); 121 } 122 123 TEST_F(FormatTestJS, LiteralOperatorsCanBeKeywords) { 124 verifyFormat("not.and.or.not_eq = 1;"); 125 } 126 127 TEST_F(FormatTestJS, ReservedWords) { 128 // JavaScript reserved words (aka keywords) are only illegal when used as 129 // Identifiers, but are legal as IdentifierNames. 130 verifyFormat("x.class.struct = 1;"); 131 verifyFormat("x.case = 1;"); 132 verifyFormat("x.interface = 1;"); 133 verifyFormat("x.for = 1;"); 134 verifyFormat("x.of() = 1;"); 135 verifyFormat("of(null);"); 136 verifyFormat("import {of} from 'x';"); 137 verifyFormat("x.in() = 1;"); 138 verifyFormat("x.let() = 1;"); 139 verifyFormat("x.var() = 1;"); 140 verifyFormat("x.for() = 1;"); 141 verifyFormat("x.as() = 1;"); 142 verifyFormat("x = {\n" 143 " a: 12,\n" 144 " interface: 1,\n" 145 " switch: 1,\n" 146 "};"); 147 verifyFormat("var struct = 2;"); 148 verifyFormat("var union = 2;"); 149 verifyFormat("var interface = 2;"); 150 verifyFormat("interface = 2;"); 151 verifyFormat("x = interface instanceof y;"); 152 } 153 154 TEST_F(FormatTestJS, ReservedWordsMethods) { 155 verifyFormat( 156 "class X {\n" 157 " delete() {\n" 158 " x();\n" 159 " }\n" 160 " interface() {\n" 161 " x();\n" 162 " }\n" 163 " let() {\n" 164 " x();\n" 165 " }\n" 166 "}\n"); 167 } 168 169 TEST_F(FormatTestJS, CppKeywords) { 170 // Make sure we don't mess stuff up because of C++ keywords. 171 verifyFormat("return operator && (aa);"); 172 // .. or QT ones. 173 verifyFormat("slots: Slot[];"); 174 } 175 176 TEST_F(FormatTestJS, ES6DestructuringAssignment) { 177 verifyFormat("var [a, b, c] = [1, 2, 3];"); 178 verifyFormat("const [a, b, c] = [1, 2, 3];"); 179 verifyFormat("let [a, b, c] = [1, 2, 3];"); 180 verifyFormat("var {a, b} = {a: 1, b: 2};"); 181 verifyFormat("let {a, b} = {a: 1, b: 2};"); 182 } 183 184 TEST_F(FormatTestJS, ContainerLiterals) { 185 verifyFormat("var x = {\n" 186 " y: function(a) {\n" 187 " return a;\n" 188 " }\n" 189 "};"); 190 verifyFormat("return {\n" 191 " link: function() {\n" 192 " f(); //\n" 193 " }\n" 194 "};"); 195 verifyFormat("return {\n" 196 " a: a,\n" 197 " link: function() {\n" 198 " f(); //\n" 199 " }\n" 200 "};"); 201 verifyFormat("return {\n" 202 " a: a,\n" 203 " link: function() {\n" 204 " f(); //\n" 205 " },\n" 206 " link: function() {\n" 207 " f(); //\n" 208 " }\n" 209 "};"); 210 verifyFormat("var stuff = {\n" 211 " // comment for update\n" 212 " update: false,\n" 213 " // comment for modules\n" 214 " modules: false,\n" 215 " // comment for tasks\n" 216 " tasks: false\n" 217 "};"); 218 verifyFormat("return {\n" 219 " 'finish':\n" 220 " //\n" 221 " a\n" 222 "};"); 223 verifyFormat("var obj = {\n" 224 " fooooooooo: function(x) {\n" 225 " return x.zIsTooLongForOneLineWithTheDeclarationLine();\n" 226 " }\n" 227 "};"); 228 // Simple object literal, as opposed to enum style below. 229 verifyFormat("var obj = {a: 123};"); 230 // Enum style top level assignment. 231 verifyFormat("X = {\n a: 123\n};"); 232 verifyFormat("X.Y = {\n a: 123\n};"); 233 // But only on the top level, otherwise its a plain object literal assignment. 234 verifyFormat("function x() {\n" 235 " y = {z: 1};\n" 236 "}"); 237 verifyFormat("x = foo && {a: 123};"); 238 239 // Arrow functions in object literals. 240 verifyFormat("var x = {\n" 241 " y: (a) => {\n" 242 " return a;\n" 243 " }\n" 244 "};"); 245 verifyFormat("var x = {y: (a) => a};"); 246 247 // Methods in object literals. 248 verifyFormat("var x = {\n" 249 " y(a: string): number {\n" 250 " return a;\n" 251 " }\n" 252 "};"); 253 verifyFormat("var x = {\n" 254 " y(a: string) {\n" 255 " return a;\n" 256 " }\n" 257 "};"); 258 259 // Computed keys. 260 verifyFormat("var x = {[a]: 1, b: 2, [c]: 3};"); 261 verifyFormat("var x = {\n" 262 " [a]: 1,\n" 263 " b: 2,\n" 264 " [c]: 3,\n" 265 "};"); 266 267 // Object literals can leave out labels. 268 verifyFormat("f({a}, () => {\n" 269 " g(); //\n" 270 "});"); 271 272 // Keys can be quoted. 273 verifyFormat("var x = {\n" 274 " a: a,\n" 275 " b: b,\n" 276 " 'c': c,\n" 277 "};"); 278 279 // Dict literals can skip the label names. 280 verifyFormat("var x = {\n" 281 " aaa,\n" 282 " aaa,\n" 283 " aaa,\n" 284 "};"); 285 verifyFormat("return {\n" 286 " a,\n" 287 " b: 'b',\n" 288 " c,\n" 289 "};"); 290 } 291 292 TEST_F(FormatTestJS, MethodsInObjectLiterals) { 293 verifyFormat("var o = {\n" 294 " value: 'test',\n" 295 " get value() { // getter\n" 296 " return this.value;\n" 297 " }\n" 298 "};"); 299 verifyFormat("var o = {\n" 300 " value: 'test',\n" 301 " set value(val) { // setter\n" 302 " this.value = val;\n" 303 " }\n" 304 "};"); 305 verifyFormat("var o = {\n" 306 " value: 'test',\n" 307 " someMethod(val) { // method\n" 308 " doSomething(this.value + val);\n" 309 " }\n" 310 "};"); 311 verifyFormat("var o = {\n" 312 " someMethod(val) { // method\n" 313 " doSomething(this.value + val);\n" 314 " },\n" 315 " someOtherMethod(val) { // method\n" 316 " doSomething(this.value + val);\n" 317 " }\n" 318 "};"); 319 } 320 321 TEST_F(FormatTestJS, GettersSettersVisibilityKeywords) { 322 // Don't break after "protected" 323 verifyFormat("class X {\n" 324 " protected get getter():\n" 325 " number {\n" 326 " return 1;\n" 327 " }\n" 328 "}", 329 getGoogleJSStyleWithColumns(12)); 330 // Don't break after "get" 331 verifyFormat("class X {\n" 332 " protected get someReallyLongGetterName():\n" 333 " number {\n" 334 " return 1;\n" 335 " }\n" 336 "}", 337 getGoogleJSStyleWithColumns(40)); 338 } 339 340 TEST_F(FormatTestJS, SpacesInContainerLiterals) { 341 verifyFormat("var arr = [1, 2, 3];"); 342 verifyFormat("f({a: 1, b: 2, c: 3});"); 343 344 verifyFormat("var object_literal_with_long_name = {\n" 345 " a: 'aaaaaaaaaaaaaaaaaa',\n" 346 " b: 'bbbbbbbbbbbbbbbbbb'\n" 347 "};"); 348 349 verifyFormat("f({a: 1, b: 2, c: 3});", 350 getChromiumStyle(FormatStyle::LK_JavaScript)); 351 verifyFormat("f({'a': [{}]});"); 352 } 353 354 TEST_F(FormatTestJS, SingleQuotedStrings) { 355 verifyFormat("this.function('', true);"); 356 } 357 358 TEST_F(FormatTestJS, GoogScopes) { 359 verifyFormat("goog.scope(function() {\n" 360 "var x = a.b;\n" 361 "var y = c.d;\n" 362 "}); // goog.scope"); 363 verifyFormat("goog.scope(function() {\n" 364 "// test\n" 365 "var x = 0;\n" 366 "// test\n" 367 "});"); 368 } 369 370 TEST_F(FormatTestJS, IIFEs) { 371 // Internal calling parens; no semi. 372 verifyFormat("(function() {\n" 373 "var a = 1;\n" 374 "}())"); 375 // External calling parens; no semi. 376 verifyFormat("(function() {\n" 377 "var b = 2;\n" 378 "})()"); 379 // Internal calling parens; with semi. 380 verifyFormat("(function() {\n" 381 "var c = 3;\n" 382 "}());"); 383 // External calling parens; with semi. 384 verifyFormat("(function() {\n" 385 "var d = 4;\n" 386 "})();"); 387 } 388 389 TEST_F(FormatTestJS, GoogModules) { 390 verifyFormat("goog.module('this.is.really.absurdly.long');", 391 getGoogleJSStyleWithColumns(40)); 392 verifyFormat("goog.require('this.is.really.absurdly.long');", 393 getGoogleJSStyleWithColumns(40)); 394 verifyFormat("goog.provide('this.is.really.absurdly.long');", 395 getGoogleJSStyleWithColumns(40)); 396 verifyFormat("var long = goog.require('this.is.really.absurdly.long');", 397 getGoogleJSStyleWithColumns(40)); 398 verifyFormat("goog.setTestOnly('this.is.really.absurdly.long');", 399 getGoogleJSStyleWithColumns(40)); 400 verifyFormat("goog.forwardDeclare('this.is.really.absurdly.long');", 401 getGoogleJSStyleWithColumns(40)); 402 403 // These should be wrapped normally. 404 verifyFormat( 405 "var MyLongClassName =\n" 406 " goog.module.get('my.long.module.name.followedBy.MyLongClassName');"); 407 } 408 409 TEST_F(FormatTestJS, FormatsNamespaces) { 410 verifyFormat("namespace Foo {\n" 411 " export let x = 1;\n" 412 "}\n"); 413 verifyFormat("declare namespace Foo {\n" 414 " export let x: number;\n" 415 "}\n"); 416 } 417 418 TEST_F(FormatTestJS, NamespacesMayNotWrap) { 419 verifyFormat("declare namespace foobarbaz {\n" 420 "}\n", getGoogleJSStyleWithColumns(18)); 421 verifyFormat("declare module foobarbaz {\n" 422 "}\n", getGoogleJSStyleWithColumns(15)); 423 verifyFormat("namespace foobarbaz {\n" 424 "}\n", getGoogleJSStyleWithColumns(10)); 425 verifyFormat("module foobarbaz {\n" 426 "}\n", getGoogleJSStyleWithColumns(7)); 427 } 428 429 TEST_F(FormatTestJS, AmbientDeclarations) { 430 FormatStyle NineCols = getGoogleJSStyleWithColumns(9); 431 verifyFormat( 432 "declare class\n" 433 " X {}", 434 NineCols); 435 verifyFormat( 436 "declare function\n" 437 "x();", // TODO(martinprobst): should ideally be indented. 438 NineCols); 439 verifyFormat("declare function foo();\n" 440 "let x = 1;\n"); 441 verifyFormat("declare function foo(): string;\n" 442 "let x = 1;\n"); 443 verifyFormat("declare function foo(): {x: number};\n" 444 "let x = 1;\n"); 445 verifyFormat("declare class X {}\n" 446 "let x = 1;\n"); 447 verifyFormat("declare interface Y {}\n" 448 "let x = 1;\n"); 449 verifyFormat( 450 "declare enum X {\n" 451 "}", 452 NineCols); 453 verifyFormat( 454 "declare let\n" 455 " x: number;", 456 NineCols); 457 } 458 459 TEST_F(FormatTestJS, FormatsFreestandingFunctions) { 460 verifyFormat("function outer1(a, b) {\n" 461 " function inner1(a, b) {\n" 462 " return a;\n" 463 " }\n" 464 " inner1(a, b);\n" 465 "}\n" 466 "function outer2(a, b) {\n" 467 " function inner2(a, b) {\n" 468 " return a;\n" 469 " }\n" 470 " inner2(a, b);\n" 471 "}"); 472 verifyFormat("function f() {}"); 473 verifyFormat("function aFunction() {}\n" 474 "(function f() {\n" 475 " var x = 1;\n" 476 "}());\n"); 477 // Known issue: this should wrap after {}, but calculateBraceTypes 478 // misclassifies the first braces as a BK_BracedInit. 479 verifyFormat("function aFunction(){} {\n" 480 " let x = 1;\n" 481 " console.log(x);\n" 482 "}\n"); 483 } 484 485 TEST_F(FormatTestJS, GeneratorFunctions) { 486 verifyFormat("function* f() {\n" 487 " let x = 1;\n" 488 " yield x;\n" 489 " yield* something();\n" 490 " yield [1, 2];\n" 491 " yield {a: 1};\n" 492 "}"); 493 verifyFormat("function*\n" 494 " f() {\n" 495 "}", 496 getGoogleJSStyleWithColumns(8)); 497 verifyFormat("export function* f() {\n" 498 " yield 1;\n" 499 "}\n"); 500 verifyFormat("class X {\n" 501 " * generatorMethod() {\n" 502 " yield x;\n" 503 " }\n" 504 "}"); 505 verifyFormat("var x = {\n" 506 " a: function*() {\n" 507 " //\n" 508 " }\n" 509 "}\n"); 510 } 511 512 TEST_F(FormatTestJS, AsyncFunctions) { 513 verifyFormat("async function f() {\n" 514 " let x = 1;\n" 515 " return fetch(x);\n" 516 "}"); 517 verifyFormat("async function f() {\n" 518 " return 1;\n" 519 "}\n" 520 "\n" 521 "function a() {\n" 522 " return 1;\n" 523 "}\n", 524 " async function f() {\n" 525 " return 1;\n" 526 "}\n" 527 "\n" 528 " function a() {\n" 529 " return 1;\n" 530 "} \n"); 531 verifyFormat("async function* f() {\n" 532 " yield fetch(x);\n" 533 "}"); 534 verifyFormat("export async function f() {\n" 535 " return fetch(x);\n" 536 "}"); 537 verifyFormat("let x = async () => f();"); 538 verifyFormat("let x = async function() {\n" 539 " f();\n" 540 "};"); 541 verifyFormat("let x = async();"); 542 verifyFormat("class X {\n" 543 " async asyncMethod() {\n" 544 " return fetch(1);\n" 545 " }\n" 546 "}"); 547 verifyFormat("function initialize() {\n" 548 " // Comment.\n" 549 " return async.then();\n" 550 "}\n"); 551 } 552 553 TEST_F(FormatTestJS, ArrayLiterals) { 554 verifyFormat("var aaaaa: List<SomeThing> =\n" 555 " [new SomeThingAAAAAAAAAAAA(), new SomeThingBBBBBBBBB()];"); 556 verifyFormat("return [\n" 557 " aaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 558 " ccccccccccccccccccccccccccc\n" 559 "];"); 560 verifyFormat("return [\n" 561 " aaaa().bbbbbbbb('A'),\n" 562 " aaaa().bbbbbbbb('B'),\n" 563 " aaaa().bbbbbbbb('C'),\n" 564 "];"); 565 verifyFormat("var someVariable = SomeFunction([\n" 566 " aaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 567 " ccccccccccccccccccccccccccc\n" 568 "]);"); 569 verifyFormat("var someVariable = SomeFunction([\n" 570 " [aaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbb],\n" 571 "]);", 572 getGoogleJSStyleWithColumns(51)); 573 verifyFormat("var someVariable = SomeFunction(aaaa, [\n" 574 " aaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 575 " ccccccccccccccccccccccccccc\n" 576 "]);"); 577 verifyFormat("var someVariable = SomeFunction(\n" 578 " aaaa,\n" 579 " [\n" 580 " aaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 581 " cccccccccccccccccccccccccc\n" 582 " ],\n" 583 " aaaa);"); 584 verifyFormat("var aaaa = aaaaa || // wrap\n" 585 " [];"); 586 587 verifyFormat("someFunction([], {a: a});"); 588 589 verifyFormat("var string = [\n" 590 " 'aaaaaa',\n" 591 " 'bbbbbb',\n" 592 "].join('+');"); 593 } 594 595 TEST_F(FormatTestJS, ColumnLayoutForArrayLiterals) { 596 verifyFormat("var array = [\n" 597 " a, a, a, a, a, a, a, a, a, a, a, a, a, a, a,\n" 598 " a, a, a, a, a, a, a, a, a, a, a, a, a, a, a,\n" 599 "];"); 600 verifyFormat("var array = someFunction([\n" 601 " a, a, a, a, a, a, a, a, a, a, a, a, a, a, a,\n" 602 " a, a, a, a, a, a, a, a, a, a, a, a, a, a, a,\n" 603 "]);"); 604 } 605 606 TEST_F(FormatTestJS, FunctionLiterals) { 607 FormatStyle Style = getGoogleStyle(FormatStyle::LK_JavaScript); 608 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline; 609 verifyFormat("doFoo(function() {});"); 610 verifyFormat("doFoo(function() { return 1; });", Style); 611 verifyFormat("var func = function() {\n" 612 " return 1;\n" 613 "};"); 614 verifyFormat("var func = //\n" 615 " function() {\n" 616 " return 1;\n" 617 "};"); 618 verifyFormat("return {\n" 619 " body: {\n" 620 " setAttribute: function(key, val) { this[key] = val; },\n" 621 " getAttribute: function(key) { return this[key]; },\n" 622 " style: {direction: ''}\n" 623 " }\n" 624 "};", 625 Style); 626 verifyFormat("abc = xyz ? function() {\n" 627 " return 1;\n" 628 "} : function() {\n" 629 " return -1;\n" 630 "};"); 631 632 verifyFormat("var closure = goog.bind(\n" 633 " function() { // comment\n" 634 " foo();\n" 635 " bar();\n" 636 " },\n" 637 " this, arg1IsReallyLongAndNeedsLineBreaks,\n" 638 " arg3IsReallyLongAndNeedsLineBreaks);"); 639 verifyFormat("var closure = goog.bind(function() { // comment\n" 640 " foo();\n" 641 " bar();\n" 642 "}, this);"); 643 verifyFormat("return {\n" 644 " a: 'E',\n" 645 " b: function() {\n" 646 " return function() {\n" 647 " f(); //\n" 648 " };\n" 649 " }\n" 650 "};"); 651 verifyFormat("{\n" 652 " var someVariable = function(x) {\n" 653 " return x.zIsTooLongForOneLineWithTheDeclarationLine();\n" 654 " };\n" 655 "}"); 656 verifyFormat("someLooooooooongFunction(\n" 657 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 658 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 659 " function(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n" 660 " // code\n" 661 " });"); 662 663 verifyFormat("return {\n" 664 " a: function SomeFunction() {\n" 665 " // ...\n" 666 " return 1;\n" 667 " }\n" 668 "};"); 669 verifyFormat("this.someObject.doSomething(aaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 670 " .then(goog.bind(function(aaaaaaaaaaa) {\n" 671 " someFunction();\n" 672 " someFunction();\n" 673 " }, this), aaaaaaaaaaaaaaaaa);"); 674 675 verifyFormat("someFunction(goog.bind(function() {\n" 676 " doSomething();\n" 677 " doSomething();\n" 678 "}, this), goog.bind(function() {\n" 679 " doSomething();\n" 680 " doSomething();\n" 681 "}, this));"); 682 683 verifyFormat("SomeFunction(function() {\n" 684 " foo();\n" 685 " bar();\n" 686 "}.bind(this));"); 687 688 // FIXME: This is bad, we should be wrapping before "function() {". 689 verifyFormat("someFunction(function() {\n" 690 " doSomething(); // break\n" 691 "})\n" 692 " .doSomethingElse(\n" 693 " // break\n" 694 " );"); 695 696 Style.ColumnLimit = 33; 697 verifyFormat("f({a: function() { return 1; }});", Style); 698 Style.ColumnLimit = 32; 699 verifyFormat("f({\n" 700 " a: function() { return 1; }\n" 701 "});", 702 Style); 703 704 } 705 706 TEST_F(FormatTestJS, InliningFunctionLiterals) { 707 FormatStyle Style = getGoogleStyle(FormatStyle::LK_JavaScript); 708 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline; 709 verifyFormat("var func = function() {\n" 710 " return 1;\n" 711 "};", 712 Style); 713 verifyFormat("var func = doSomething(function() { return 1; });", Style); 714 verifyFormat("var outer = function() {\n" 715 " var inner = function() { return 1; }\n" 716 "};", 717 Style); 718 verifyFormat("function outer1(a, b) {\n" 719 " function inner1(a, b) { return a; }\n" 720 "}", 721 Style); 722 723 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All; 724 verifyFormat("var func = function() { return 1; };", Style); 725 verifyFormat("var func = doSomething(function() { return 1; });", Style); 726 verifyFormat( 727 "var outer = function() { var inner = function() { return 1; } };", 728 Style); 729 verifyFormat("function outer1(a, b) {\n" 730 " function inner1(a, b) { return a; }\n" 731 "}", 732 Style); 733 734 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None; 735 verifyFormat("var func = function() {\n" 736 " return 1;\n" 737 "};", 738 Style); 739 verifyFormat("var func = doSomething(function() {\n" 740 " return 1;\n" 741 "});", 742 Style); 743 verifyFormat("var outer = function() {\n" 744 " var inner = function() {\n" 745 " return 1;\n" 746 " }\n" 747 "};", 748 Style); 749 verifyFormat("function outer1(a, b) {\n" 750 " function inner1(a, b) {\n" 751 " return a;\n" 752 " }\n" 753 "}", 754 Style); 755 756 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Empty; 757 verifyFormat("var func = function() {\n" 758 " return 1;\n" 759 "};", 760 Style); 761 } 762 763 TEST_F(FormatTestJS, MultipleFunctionLiterals) { 764 FormatStyle Style = getGoogleStyle(FormatStyle::LK_JavaScript); 765 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All; 766 verifyFormat("promise.then(\n" 767 " function success() {\n" 768 " doFoo();\n" 769 " doBar();\n" 770 " },\n" 771 " function error() {\n" 772 " doFoo();\n" 773 " doBaz();\n" 774 " },\n" 775 " []);\n"); 776 verifyFormat("promise.then(\n" 777 " function success() {\n" 778 " doFoo();\n" 779 " doBar();\n" 780 " },\n" 781 " [],\n" 782 " function error() {\n" 783 " doFoo();\n" 784 " doBaz();\n" 785 " });\n"); 786 verifyFormat("promise.then(\n" 787 " [],\n" 788 " function success() {\n" 789 " doFoo();\n" 790 " doBar();\n" 791 " },\n" 792 " function error() {\n" 793 " doFoo();\n" 794 " doBaz();\n" 795 " });\n"); 796 797 verifyFormat("getSomeLongPromise()\n" 798 " .then(function(value) { body(); })\n" 799 " .thenCatch(function(error) {\n" 800 " body();\n" 801 " body();\n" 802 " });", 803 Style); 804 verifyFormat("getSomeLongPromise()\n" 805 " .then(function(value) {\n" 806 " body();\n" 807 " body();\n" 808 " })\n" 809 " .thenCatch(function(error) {\n" 810 " body();\n" 811 " body();\n" 812 " });"); 813 814 verifyFormat("getSomeLongPromise()\n" 815 " .then(function(value) { body(); })\n" 816 " .thenCatch(function(error) { body(); });", 817 Style); 818 819 verifyFormat("return [aaaaaaaaaaaaaaaaaaaaaa]\n" 820 " .aaaaaaa(function() {\n" 821 " //\n" 822 " })\n" 823 " .bbbbbb();"); 824 } 825 826 TEST_F(FormatTestJS, ArrowFunctions) { 827 verifyFormat("var x = (a) => {\n" 828 " return a;\n" 829 "};"); 830 verifyFormat("var x = (a) => {\n" 831 " function y() {\n" 832 " return 42;\n" 833 " }\n" 834 " return a;\n" 835 "};"); 836 verifyFormat("var x = (a: type): {some: type} => {\n" 837 " return a;\n" 838 "};"); 839 verifyFormat("var x = (a) => a;"); 840 verifyFormat("return () => [];"); 841 verifyFormat("var aaaaaaaaaaaaaaaaaaaa = {\n" 842 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa:\n" 843 " (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 844 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) =>\n" 845 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 846 "};"); 847 verifyFormat("var a = a.aaaaaaa(\n" 848 " (a: a) => aaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbbbb) &&\n" 849 " aaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbb));"); 850 verifyFormat("var a = a.aaaaaaa(\n" 851 " (a: a) => aaaaaaaaaaaaaaaaaaaaa(bbbbbbbbb) ?\n" 852 " aaaaaaaaaaaaaaaaaaaaa(bbbbbbb) :\n" 853 " aaaaaaaaaaaaaaaaaaaaa(bbbbbbb));"); 854 855 // FIXME: This is bad, we should be wrapping before "() => {". 856 verifyFormat("someFunction(() => {\n" 857 " doSomething(); // break\n" 858 "})\n" 859 " .doSomethingElse(\n" 860 " // break\n" 861 " );"); 862 } 863 864 TEST_F(FormatTestJS, ReturnStatements) { 865 verifyFormat("function() {\n" 866 " return [hello, world];\n" 867 "}"); 868 } 869 870 TEST_F(FormatTestJS, ForLoops) { 871 verifyFormat("for (var i in [2, 3]) {\n" 872 "}"); 873 verifyFormat("for (var i of [2, 3]) {\n" 874 "}"); 875 verifyFormat("for (let {a, b} of x) {\n" 876 "}"); 877 verifyFormat("for (let {a, b} in x) {\n" 878 "}"); 879 } 880 881 TEST_F(FormatTestJS, WrapRespectsAutomaticSemicolonInsertion) { 882 // The following statements must not wrap, as otherwise the program meaning 883 // would change due to automatic semicolon insertion. 884 // See http://www.ecma-international.org/ecma-262/5.1/#sec-7.9.1. 885 verifyFormat("return aaaaa;", getGoogleJSStyleWithColumns(10)); 886 verifyFormat("return /* hello! */ aaaaa;", getGoogleJSStyleWithColumns(10)); 887 verifyFormat("continue aaaaa;", getGoogleJSStyleWithColumns(10)); 888 verifyFormat("continue /* hello! */ aaaaa;", getGoogleJSStyleWithColumns(10)); 889 verifyFormat("break aaaaa;", getGoogleJSStyleWithColumns(10)); 890 verifyFormat("throw aaaaa;", getGoogleJSStyleWithColumns(10)); 891 verifyFormat("aaaaaaaaa++;", getGoogleJSStyleWithColumns(10)); 892 verifyFormat("aaaaaaaaa--;", getGoogleJSStyleWithColumns(10)); 893 verifyFormat("return [\n" 894 " aaa\n" 895 "];", 896 getGoogleJSStyleWithColumns(12)); 897 } 898 899 TEST_F(FormatTestJS, AutomaticSemicolonInsertionHeuristic) { 900 verifyFormat("a\n" 901 "b;", 902 " a \n" 903 " b ;"); 904 verifyFormat("a()\n" 905 "b;", 906 " a ()\n" 907 " b ;"); 908 verifyFormat("a[b]\n" 909 "c;", 910 "a [b]\n" 911 "c ;"); 912 verifyFormat("1\n" 913 "a;", 914 "1 \n" 915 "a ;"); 916 verifyFormat("a\n" 917 "1;", 918 "a \n" 919 "1 ;"); 920 verifyFormat("a\n" 921 "'x';", 922 "a \n" 923 " 'x';"); 924 verifyFormat("a++\n" 925 "b;", 926 "a ++\n" 927 "b ;"); 928 verifyFormat("a\n" 929 "!b && c;", 930 "a \n" 931 " ! b && c;"); 932 verifyFormat("a\n" 933 "if (1) f();", 934 " a\n" 935 " if (1) f();"); 936 verifyFormat("a\n" 937 "class X {}", 938 " a\n" 939 " class X {}"); 940 verifyFormat("var a", "var\n" 941 "a"); 942 verifyFormat("x instanceof String", "x\n" 943 "instanceof\n" 944 "String"); 945 verifyFormat("function f(@Foo bar) {}", "function f(@Foo\n" 946 " bar) {}"); 947 verifyFormat("a = true\n" 948 "return 1", 949 "a = true\n" 950 " return 1"); 951 verifyFormat("a = 's'\n" 952 "return 1", 953 "a = 's'\n" 954 " return 1"); 955 verifyFormat("a = null\n" 956 "return 1", 957 "a = null\n" 958 " return 1"); 959 // Below "class Y {}" should ideally be on its own line. 960 verifyFormat( 961 "x = {\n" 962 " a: 1\n" 963 "} class Y {}", 964 " x = {a : 1}\n" 965 " class Y { }"); 966 verifyFormat( 967 "if (x) {\n" 968 "}\n" 969 "return 1", 970 "if (x) {}\n" 971 " return 1"); 972 verifyFormat( 973 "if (x) {\n" 974 "}\n" 975 "class X {}", 976 "if (x) {}\n" 977 " class X {}"); 978 } 979 980 TEST_F(FormatTestJS, ImportExportASI) { 981 verifyFormat( 982 "import {x} from 'y'\n" 983 "export function z() {}", 984 "import {x} from 'y'\n" 985 " export function z() {}"); 986 // Below "class Y {}" should ideally be on its own line. 987 verifyFormat( 988 "export {x} class Y {}", 989 " export {x}\n" 990 " class Y {\n}"); 991 verifyFormat( 992 "if (x) {\n" 993 "}\n" 994 "export class Y {}", 995 "if ( x ) { }\n" 996 " export class Y {}"); 997 } 998 999 TEST_F(FormatTestJS, ClosureStyleCasts) { 1000 verifyFormat("var x = /** @type {foo} */ (bar);"); 1001 } 1002 1003 TEST_F(FormatTestJS, TryCatch) { 1004 verifyFormat("try {\n" 1005 " f();\n" 1006 "} catch (e) {\n" 1007 " g();\n" 1008 "} finally {\n" 1009 " h();\n" 1010 "}"); 1011 1012 // But, of course, "catch" is a perfectly fine function name in JavaScript. 1013 verifyFormat("someObject.catch();"); 1014 verifyFormat("someObject.new();"); 1015 verifyFormat("someObject.delete();"); 1016 } 1017 1018 TEST_F(FormatTestJS, StringLiteralConcatenation) { 1019 verifyFormat("var literal = 'hello ' +\n" 1020 " 'world';"); 1021 } 1022 1023 TEST_F(FormatTestJS, RegexLiteralClassification) { 1024 // Regex literals. 1025 verifyFormat("var regex = /abc/;"); 1026 verifyFormat("f(/abc/);"); 1027 verifyFormat("f(abc, /abc/);"); 1028 verifyFormat("some_map[/abc/];"); 1029 verifyFormat("var x = a ? /abc/ : /abc/;"); 1030 verifyFormat("for (var i = 0; /abc/.test(s[i]); i++) {\n}"); 1031 verifyFormat("var x = !/abc/.test(y);"); 1032 verifyFormat("var x = foo()! / 10;"); 1033 verifyFormat("var x = a && /abc/.test(y);"); 1034 verifyFormat("var x = a || /abc/.test(y);"); 1035 verifyFormat("var x = a + /abc/.search(y);"); 1036 verifyFormat("/abc/.search(y);"); 1037 verifyFormat("var regexs = {/abc/, /abc/};"); 1038 verifyFormat("return /abc/;"); 1039 1040 // Not regex literals. 1041 verifyFormat("var a = a / 2 + b / 3;"); 1042 verifyFormat("var a = a++ / 2;"); 1043 // Prefix unary can operate on regex literals, not that it makes sense. 1044 verifyFormat("var a = ++/a/;"); 1045 1046 // This is a known issue, regular expressions are incorrectly detected if 1047 // directly following a closing parenthesis. 1048 verifyFormat("if (foo) / bar /.exec(baz);"); 1049 } 1050 1051 TEST_F(FormatTestJS, RegexLiteralSpecialCharacters) { 1052 verifyFormat("var regex = /=/;"); 1053 verifyFormat("var regex = /a*/;"); 1054 verifyFormat("var regex = /a+/;"); 1055 verifyFormat("var regex = /a?/;"); 1056 verifyFormat("var regex = /.a./;"); 1057 verifyFormat("var regex = /a\\*/;"); 1058 verifyFormat("var regex = /^a$/;"); 1059 verifyFormat("var regex = /\\/a/;"); 1060 verifyFormat("var regex = /(?:x)/;"); 1061 verifyFormat("var regex = /x(?=y)/;"); 1062 verifyFormat("var regex = /x(?!y)/;"); 1063 verifyFormat("var regex = /x|y/;"); 1064 verifyFormat("var regex = /a{2}/;"); 1065 verifyFormat("var regex = /a{1,3}/;"); 1066 1067 verifyFormat("var regex = /[abc]/;"); 1068 verifyFormat("var regex = /[^abc]/;"); 1069 verifyFormat("var regex = /[\\b]/;"); 1070 verifyFormat("var regex = /[/]/;"); 1071 verifyFormat("var regex = /[\\/]/;"); 1072 verifyFormat("var regex = /\\[/;"); 1073 verifyFormat("var regex = /\\\\[/]/;"); 1074 verifyFormat("var regex = /}[\"]/;"); 1075 verifyFormat("var regex = /}[/\"]/;"); 1076 verifyFormat("var regex = /}[\"/]/;"); 1077 1078 verifyFormat("var regex = /\\b/;"); 1079 verifyFormat("var regex = /\\B/;"); 1080 verifyFormat("var regex = /\\d/;"); 1081 verifyFormat("var regex = /\\D/;"); 1082 verifyFormat("var regex = /\\f/;"); 1083 verifyFormat("var regex = /\\n/;"); 1084 verifyFormat("var regex = /\\r/;"); 1085 verifyFormat("var regex = /\\s/;"); 1086 verifyFormat("var regex = /\\S/;"); 1087 verifyFormat("var regex = /\\t/;"); 1088 verifyFormat("var regex = /\\v/;"); 1089 verifyFormat("var regex = /\\w/;"); 1090 verifyFormat("var regex = /\\W/;"); 1091 verifyFormat("var regex = /a(a)\\1/;"); 1092 verifyFormat("var regex = /\\0/;"); 1093 verifyFormat("var regex = /\\\\/g;"); 1094 verifyFormat("var regex = /\\a\\\\/g;"); 1095 verifyFormat("var regex = /\a\\//g;"); 1096 verifyFormat("var regex = /a\\//;\n" 1097 "var x = 0;"); 1098 verifyFormat("var regex = /'/g;", "var regex = /'/g ;"); 1099 verifyFormat("var regex = /'/g; //'", "var regex = /'/g ; //'"); 1100 verifyFormat("var regex = /\\/*/;\n" 1101 "var x = 0;", 1102 "var regex = /\\/*/;\n" 1103 "var x=0;"); 1104 verifyFormat("var x = /a\\//;", "var x = /a\\// \n;"); 1105 verifyFormat("var regex = /\"/;", getGoogleJSStyleWithColumns(16)); 1106 verifyFormat("var regex =\n" 1107 " /\"/;", 1108 getGoogleJSStyleWithColumns(15)); 1109 verifyFormat("var regex = //\n" 1110 " /a/;"); 1111 verifyFormat("var regexs = [\n" 1112 " /d/, //\n" 1113 " /aa/, //\n" 1114 "];"); 1115 } 1116 1117 TEST_F(FormatTestJS, RegexLiteralModifiers) { 1118 verifyFormat("var regex = /abc/g;"); 1119 verifyFormat("var regex = /abc/i;"); 1120 verifyFormat("var regex = /abc/m;"); 1121 verifyFormat("var regex = /abc/y;"); 1122 } 1123 1124 TEST_F(FormatTestJS, RegexLiteralLength) { 1125 verifyFormat("var regex = /aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/;", 1126 getGoogleJSStyleWithColumns(60)); 1127 verifyFormat("var regex =\n" 1128 " /aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/;", 1129 getGoogleJSStyleWithColumns(60)); 1130 verifyFormat("var regex = /\\xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/;", 1131 getGoogleJSStyleWithColumns(50)); 1132 } 1133 1134 TEST_F(FormatTestJS, RegexLiteralExamples) { 1135 verifyFormat("var regex = search.match(/(?:\?|&)times=([^?&]+)/i);"); 1136 } 1137 1138 TEST_F(FormatTestJS, IgnoresMpegTS) { 1139 std::string MpegTS(200, ' '); 1140 MpegTS.replace(0, strlen("nearlyLooks + like + ts + code; "), 1141 "nearlyLooks + like + ts + code; "); 1142 MpegTS[0] = 0x47; 1143 MpegTS[188] = 0x47; 1144 verifyFormat(MpegTS, MpegTS); 1145 } 1146 1147 TEST_F(FormatTestJS, TypeAnnotations) { 1148 verifyFormat("var x: string;"); 1149 verifyFormat("var x: {a: string; b: number;} = {};"); 1150 verifyFormat("function x(): string {\n return 'x';\n}"); 1151 verifyFormat("function x(): {x: string} {\n return {x: 'x'};\n}"); 1152 verifyFormat("function x(y: string): string {\n return 'x';\n}"); 1153 verifyFormat("for (var y: string in x) {\n x();\n}"); 1154 verifyFormat("for (var y: string of x) {\n x();\n}"); 1155 verifyFormat("function x(y: {a?: number;} = {}): number {\n" 1156 " return 12;\n" 1157 "}"); 1158 verifyFormat("((a: string, b: number): string => a + b);"); 1159 verifyFormat("var x: (y: number) => string;"); 1160 verifyFormat("var x: P<string, (a: number) => string>;"); 1161 verifyFormat("var x = {\n" 1162 " y: function(): z {\n" 1163 " return 1;\n" 1164 " }\n" 1165 "};"); 1166 verifyFormat("var x = {\n" 1167 " y: function(): {a: number} {\n" 1168 " return 1;\n" 1169 " }\n" 1170 "};"); 1171 verifyFormat("function someFunc(args: string[]):\n" 1172 " {longReturnValue: string[]} {}", 1173 getGoogleJSStyleWithColumns(60)); 1174 verifyFormat( 1175 "var someValue = (v as aaaaaaaaaaaaaaaaaaaa<T>[])\n" 1176 " .someFunction(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 1177 } 1178 1179 TEST_F(FormatTestJS, UnionIntersectionTypes) { 1180 verifyFormat("let x: A|B = A | B;"); 1181 verifyFormat("let x: A&B|C = A & B;"); 1182 verifyFormat("let x: Foo<A|B> = new Foo<A|B>();"); 1183 verifyFormat("function(x: A|B): C&D {}"); 1184 verifyFormat("function(x: A|B = A | B): C&D {}"); 1185 verifyFormat("function x(path: number|string) {}"); 1186 verifyFormat("function x(): string|number {}"); 1187 verifyFormat("type Foo = Bar|Baz;"); 1188 verifyFormat("type Foo = Bar<X>|Baz;"); 1189 verifyFormat("type Foo = (Bar<X>|Baz);"); 1190 verifyFormat("let x: Bar|Baz;"); 1191 verifyFormat("let x: Bar<X>|Baz;"); 1192 verifyFormat("let x: (Foo|Bar)[];"); 1193 } 1194 1195 TEST_F(FormatTestJS, ClassDeclarations) { 1196 verifyFormat("class C {\n x: string = 12;\n}"); 1197 verifyFormat("class C {\n x(): string => 12;\n}"); 1198 verifyFormat("class C {\n ['x' + 2]: string = 12;\n}"); 1199 verifyFormat("class C {\n private x: string = 12;\n}"); 1200 verifyFormat("class C {\n private static x: string = 12;\n}"); 1201 verifyFormat("class C {\n static x(): string {\n return 'asd';\n }\n}"); 1202 verifyFormat("class C extends P implements I {}"); 1203 verifyFormat("class C extends p.P implements i.I {}"); 1204 verifyFormat( 1205 "x(class {\n" 1206 " a(): A {}\n" 1207 "});"); 1208 verifyFormat("class Test {\n" 1209 " aaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaaaa):\n" 1210 " aaaaaaaaaaaaaaaaaaaaaa {}\n" 1211 "}"); 1212 verifyFormat("foo = class Name {\n" 1213 " constructor() {}\n" 1214 "};"); 1215 verifyFormat("foo = class {\n" 1216 " constructor() {}\n" 1217 "};"); 1218 verifyFormat("class C {\n" 1219 " x: {y: Z;} = {};\n" 1220 " private y: {y: Z;} = {};\n" 1221 "}"); 1222 1223 // ':' is not a type declaration here. 1224 verifyFormat("class X {\n" 1225 " subs = {\n" 1226 " 'b': {\n" 1227 " 'c': 1,\n" 1228 " },\n" 1229 " };\n" 1230 "}"); 1231 verifyFormat("@Component({\n" 1232 " moduleId: module.id,\n" 1233 "})\n" 1234 "class SessionListComponent implements OnDestroy, OnInit {\n" 1235 "}"); 1236 } 1237 1238 TEST_F(FormatTestJS, InterfaceDeclarations) { 1239 verifyFormat("interface I {\n" 1240 " x: string;\n" 1241 " enum: string[];\n" 1242 " enum?: string[];\n" 1243 "}\n" 1244 "var y;"); 1245 // Ensure that state is reset after parsing the interface. 1246 verifyFormat("interface a {}\n" 1247 "export function b() {}\n" 1248 "var x;"); 1249 1250 // Arrays of object type literals. 1251 verifyFormat("interface I {\n" 1252 " o: {}[];\n" 1253 "}"); 1254 } 1255 1256 TEST_F(FormatTestJS, EnumDeclarations) { 1257 verifyFormat("enum Foo {\n" 1258 " A = 1,\n" 1259 " B\n" 1260 "}"); 1261 verifyFormat("export /* somecomment*/ enum Foo {\n" 1262 " A = 1,\n" 1263 " B\n" 1264 "}"); 1265 verifyFormat("enum Foo {\n" 1266 " A = 1, // comment\n" 1267 " B\n" 1268 "}\n" 1269 "var x = 1;"); 1270 } 1271 1272 TEST_F(FormatTestJS, MetadataAnnotations) { 1273 verifyFormat("@A\nclass C {\n}"); 1274 verifyFormat("@A({arg: 'value'})\nclass C {\n}"); 1275 verifyFormat("@A\n@B\nclass C {\n}"); 1276 verifyFormat("class C {\n @A x: string;\n}"); 1277 verifyFormat("class C {\n" 1278 " @A\n" 1279 " private x(): string {\n" 1280 " return 'y';\n" 1281 " }\n" 1282 "}"); 1283 verifyFormat("class C {\n" 1284 " private x(@A x: string) {}\n" 1285 "}"); 1286 verifyFormat("class X {}\n" 1287 "class Y {}"); 1288 verifyFormat("class X {\n" 1289 " @property() private isReply = false;\n" 1290 "}\n"); 1291 } 1292 1293 TEST_F(FormatTestJS, TypeAliases) { 1294 verifyFormat("type X = number;\n" 1295 "class C {}"); 1296 verifyFormat("type X<Y> = Z<Y>;"); 1297 verifyFormat("type X = {\n" 1298 " y: number\n" 1299 "};\n" 1300 "class C {}"); 1301 } 1302 1303 TEST_F(FormatTestJS, TypeInterfaceLineWrapping) { 1304 const FormatStyle &Style = getGoogleJSStyleWithColumns(20); 1305 verifyFormat("type LongTypeIsReallyUnreasonablyLong =\n" 1306 " string;\n", 1307 "type LongTypeIsReallyUnreasonablyLong = string;\n", 1308 Style); 1309 verifyFormat( 1310 "interface AbstractStrategyFactoryProvider {\n" 1311 " a: number\n" 1312 "}\n", 1313 "interface AbstractStrategyFactoryProvider { a: number }\n", 1314 Style); 1315 } 1316 1317 TEST_F(FormatTestJS, Modules) { 1318 verifyFormat("import SomeThing from 'some/module.js';"); 1319 verifyFormat("import {X, Y} from 'some/module.js';"); 1320 verifyFormat("import a, {X, Y} from 'some/module.js';"); 1321 verifyFormat("import {X, Y,} from 'some/module.js';"); 1322 verifyFormat("import {X as myLocalX, Y as myLocalY} from 'some/module.js';"); 1323 // Ensure Automatic Semicolon Insertion does not break on "as\n". 1324 verifyFormat("import {X as myX} from 'm';", "import {X as\n" 1325 " myX} from 'm';"); 1326 verifyFormat("import * as lib from 'some/module.js';"); 1327 verifyFormat("var x = {import: 1};\nx.import = 2;"); 1328 1329 verifyFormat("export function fn() {\n" 1330 " return 'fn';\n" 1331 "}"); 1332 verifyFormat("export function A() {}\n" 1333 "export default function B() {}\n" 1334 "export function C() {}"); 1335 verifyFormat("export default () => {\n" 1336 " let x = 1;\n" 1337 " return x;\n" 1338 "}"); 1339 verifyFormat("export const x = 12;"); 1340 verifyFormat("export default class X {}"); 1341 verifyFormat("export {X, Y} from 'some/module.js';"); 1342 verifyFormat("export {X, Y,} from 'some/module.js';"); 1343 verifyFormat("export {SomeVeryLongExport as X, " 1344 "SomeOtherVeryLongExport as Y} from 'some/module.js';"); 1345 // export without 'from' is wrapped. 1346 verifyFormat("export let someRatherLongVariableName =\n" 1347 " someSurprisinglyLongVariable + someOtherRatherLongVar;"); 1348 // ... but not if from is just an identifier. 1349 verifyFormat("export {\n" 1350 " from as from,\n" 1351 " someSurprisinglyLongVariable as\n" 1352 " from\n" 1353 "};", 1354 getGoogleJSStyleWithColumns(20)); 1355 verifyFormat("export class C {\n" 1356 " x: number;\n" 1357 " y: string;\n" 1358 "}"); 1359 verifyFormat("export class X { y: number; }"); 1360 verifyFormat("export abstract class X { y: number; }"); 1361 verifyFormat("export default class X { y: number }"); 1362 verifyFormat("export default function() {\n return 1;\n}"); 1363 verifyFormat("export var x = 12;"); 1364 verifyFormat("class C {}\n" 1365 "export function f() {}\n" 1366 "var v;"); 1367 verifyFormat("export var x: number = 12;"); 1368 verifyFormat("export const y = {\n" 1369 " a: 1,\n" 1370 " b: 2\n" 1371 "};"); 1372 verifyFormat("export enum Foo {\n" 1373 " BAR,\n" 1374 " // adsdasd\n" 1375 " BAZ\n" 1376 "}"); 1377 verifyFormat("export default [\n" 1378 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 1379 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 1380 "];"); 1381 verifyFormat("export default [];"); 1382 verifyFormat("export default () => {};"); 1383 verifyFormat("export interface Foo { foo: number; }\n" 1384 "export class Bar {\n" 1385 " blah(): string {\n" 1386 " return this.blah;\n" 1387 " };\n" 1388 "}"); 1389 } 1390 1391 TEST_F(FormatTestJS, ImportWrapping) { 1392 verifyFormat("import {VeryLongImportsAreAnnoying, VeryLongImportsAreAnnoying," 1393 " VeryLongImportsAreAnnoying, VeryLongImportsAreAnnoying" 1394 "} from 'some/module.js';"); 1395 FormatStyle Style = getGoogleJSStyleWithColumns(80); 1396 Style.JavaScriptWrapImports = true; 1397 verifyFormat("import {\n" 1398 " VeryLongImportsAreAnnoying,\n" 1399 " VeryLongImportsAreAnnoying,\n" 1400 " VeryLongImportsAreAnnoying,\n" 1401 "} from 'some/module.js';", 1402 Style); 1403 verifyFormat("import {\n" 1404 " A,\n" 1405 " A,\n" 1406 "} from 'some/module.js';", 1407 Style); 1408 verifyFormat("export {\n" 1409 " A,\n" 1410 " A,\n" 1411 "} from 'some/module.js';", 1412 Style); 1413 } 1414 1415 TEST_F(FormatTestJS, TemplateStrings) { 1416 // Keeps any whitespace/indentation within the template string. 1417 verifyFormat("var x = `hello\n" 1418 " ${name}\n" 1419 " !`;", 1420 "var x = `hello\n" 1421 " ${ name }\n" 1422 " !`;"); 1423 1424 verifyFormat("var x =\n" 1425 " `hello ${world}` >= some();", 1426 getGoogleJSStyleWithColumns(34)); // Barely doesn't fit. 1427 verifyFormat("var x = `hello ${world}` >= some();", 1428 getGoogleJSStyleWithColumns(35)); // Barely fits. 1429 verifyFormat("var x = `hellö ${wörld}` >= söme();", 1430 getGoogleJSStyleWithColumns(35)); // Fits due to UTF-8. 1431 verifyFormat("var x = `hello\n" 1432 " ${world}` >=\n" 1433 " some();", 1434 "var x =\n" 1435 " `hello\n" 1436 " ${world}` >= some();", 1437 getGoogleJSStyleWithColumns(21)); // Barely doesn't fit. 1438 verifyFormat("var x = `hello\n" 1439 " ${world}` >= some();", 1440 "var x =\n" 1441 " `hello\n" 1442 " ${world}` >= some();", 1443 getGoogleJSStyleWithColumns(22)); // Barely fits. 1444 1445 verifyFormat("var x =\n" 1446 " `h`;", 1447 getGoogleJSStyleWithColumns(11)); 1448 verifyFormat("var x =\n `multi\n line`;", "var x = `multi\n line`;", 1449 getGoogleJSStyleWithColumns(13)); 1450 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 1451 " `aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa`);"); 1452 // Repro for an obscure width-miscounting issue with template strings. 1453 verifyFormat( 1454 "someLongVariable =\n" 1455 " " 1456 "`${logPrefix[11]}/${logPrefix[12]}/${logPrefix[13]}${logPrefix[14]}`;", 1457 "someLongVariable = " 1458 "`${logPrefix[11]}/${logPrefix[12]}/${logPrefix[13]}${logPrefix[14]}`;"); 1459 1460 // Make sure template strings get a proper ColumnWidth assigned, even if they 1461 // are first token in line. 1462 verifyFormat( 1463 "var a = aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 1464 " `aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa`;"); 1465 1466 // Two template strings. 1467 verifyFormat("var x = `hello` == `hello`;"); 1468 1469 // Comments in template strings. 1470 verifyFormat("var x = `//a`;\n" 1471 "var y;", 1472 "var x =\n `//a`;\n" 1473 "var y ;"); 1474 verifyFormat("var x = `/*a`;\n" 1475 "var y;", 1476 "var x =\n `/*a`;\n" 1477 "var y;"); 1478 // Unterminated string literals in a template string. 1479 verifyFormat("var x = `'`; // comment with matching quote '\n" 1480 "var y;"); 1481 verifyFormat("var x = `\"`; // comment with matching quote \"\n" 1482 "var y;"); 1483 verifyFormat("it(`'aaaaaaaaaaaaaaa `, aaaaaaaaa);", 1484 "it(`'aaaaaaaaaaaaaaa `, aaaaaaaaa) ;", 1485 getGoogleJSStyleWithColumns(40)); 1486 // Backticks in a comment - not a template string. 1487 verifyFormat("var x = 1 // `/*a`;\n" 1488 " ;", 1489 "var x =\n 1 // `/*a`;\n" 1490 " ;"); 1491 verifyFormat("/* ` */ var x = 1; /* ` */", "/* ` */ var x\n= 1; /* ` */"); 1492 // Comment spans multiple template strings. 1493 verifyFormat("var x = `/*a`;\n" 1494 "var y = ` */ `;", 1495 "var x =\n `/*a`;\n" 1496 "var y =\n ` */ `;"); 1497 // Escaped backtick. 1498 verifyFormat("var x = ` \\` a`;\n" 1499 "var y;", 1500 "var x = ` \\` a`;\n" 1501 "var y;"); 1502 // Escaped dollar. 1503 verifyFormat("var x = ` \\${foo}`;\n"); 1504 1505 // The token stream can contain two string_literals in sequence, but that 1506 // doesn't mean that they are implicitly concatenated in JavaScript. 1507 verifyFormat("var f = `aaaa ${a ? 'a' : 'b'}`;"); 1508 1509 // Ensure that scopes are appropriately set around evaluated expressions in 1510 // template strings. 1511 verifyFormat("var f = `aaaaaaaaaaaaa:${aaaaaaa.aaaaa} aaaaaaaa\n" 1512 " aaaaaaaaaaaaa:${aaaaaaa.aaaaa} aaaaaaaa`;", 1513 "var f = `aaaaaaaaaaaaa:${aaaaaaa. aaaaa} aaaaaaaa\n" 1514 " aaaaaaaaaaaaa:${ aaaaaaa. aaaaa} aaaaaaaa`;"); 1515 verifyFormat("var x = someFunction(`${})`) //\n" 1516 " .oooooooooooooooooon();"); 1517 verifyFormat("var x = someFunction(`${aaaa}${\n" 1518 " aaaaa( //\n" 1519 " aaaaa)\n" 1520 " })`);"); 1521 } 1522 1523 TEST_F(FormatTestJS, TemplateStringMultiLineExpression) { 1524 verifyFormat("var f = `aaaaaaaaaaaaaaaaaa: ${\n" 1525 " aaaaa + //\n" 1526 " bbbb\n" 1527 " }`;", 1528 "var f = `aaaaaaaaaaaaaaaaaa: ${aaaaa + //\n" 1529 " bbbb}`;"); 1530 verifyFormat("var f = `\n" 1531 " aaaaaaaaaaaaaaaaaa: ${\n" 1532 " aaaaa + //\n" 1533 " bbbb\n" 1534 " }`;", 1535 "var f = `\n" 1536 " aaaaaaaaaaaaaaaaaa: ${ aaaaa + //\n" 1537 " bbbb }`;"); 1538 verifyFormat("var f = `\n" 1539 " aaaaaaaaaaaaaaaaaa: ${\n" 1540 " someFunction(\n" 1541 " aaaaa + //\n" 1542 " bbbb)\n" 1543 " }`;", 1544 "var f = `\n" 1545 " aaaaaaaaaaaaaaaaaa: ${someFunction (\n" 1546 " aaaaa + //\n" 1547 " bbbb)}`;"); 1548 1549 // It might be preferable to wrap before "someFunction". 1550 verifyFormat("var f = `\n" 1551 " aaaaaaaaaaaaaaaaaa: ${someFunction({\n" 1552 " aaaa: aaaaa,\n" 1553 " bbbb: bbbbb,\n" 1554 " })}`;", 1555 "var f = `\n" 1556 " aaaaaaaaaaaaaaaaaa: ${someFunction ({\n" 1557 " aaaa: aaaaa,\n" 1558 " bbbb: bbbbb,\n" 1559 " })}`;"); 1560 } 1561 1562 TEST_F(FormatTestJS, TemplateStringASI) { 1563 verifyFormat("var x = `hello${world}`;", "var x = `hello${\n" 1564 " world\n" 1565 "}`;"); 1566 } 1567 1568 TEST_F(FormatTestJS, NestedTemplateStrings) { 1569 verifyFormat( 1570 "var x = `<ul>${xs.map(x => `<li>${x}</li>`).join('\\n')}</ul>`;"); 1571 verifyFormat("var x = `he${({text: 'll'}.text)}o`;"); 1572 1573 // Crashed at some point. 1574 verifyFormat("}"); 1575 } 1576 1577 TEST_F(FormatTestJS, TaggedTemplateStrings) { 1578 verifyFormat("var x = html`<ul>`;"); 1579 } 1580 1581 TEST_F(FormatTestJS, CastSyntax) { 1582 verifyFormat("var x = <type>foo;"); 1583 verifyFormat("var x = foo as type;"); 1584 verifyFormat("let x = (a + b) as\n" 1585 " LongTypeIsLong;", 1586 getGoogleJSStyleWithColumns(20)); 1587 verifyFormat("foo = <Bar[]>[\n" 1588 " 1, //\n" 1589 " 2\n" 1590 "];"); 1591 verifyFormat("var x = [{x: 1} as type];"); 1592 verifyFormat("x = x as [a, b];"); 1593 verifyFormat("x = x as {a: string};"); 1594 verifyFormat("x = x as (string);"); 1595 verifyFormat("x = x! as (string);"); 1596 verifyFormat("var x = something.someFunction() as\n" 1597 " something;", 1598 getGoogleJSStyleWithColumns(40)); 1599 } 1600 1601 TEST_F(FormatTestJS, TypeArguments) { 1602 verifyFormat("class X<Y> {}"); 1603 verifyFormat("new X<Y>();"); 1604 verifyFormat("foo<Y>(a);"); 1605 verifyFormat("var x: X<Y>[];"); 1606 verifyFormat("class C extends D<E> implements F<G>, H<I> {}"); 1607 verifyFormat("function f(a: List<any> = null) {}"); 1608 verifyFormat("function f(): List<any> {}"); 1609 verifyFormat("function aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa():\n" 1610 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb {}"); 1611 verifyFormat("function aaaaaaaaaa(\n" 1612 " aaaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaaa,\n" 1613 " aaaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaaa):\n" 1614 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa {}"); 1615 } 1616 1617 TEST_F(FormatTestJS, UserDefinedTypeGuards) { 1618 verifyFormat( 1619 "function foo(check: Object):\n" 1620 " check is {foo: string, bar: string, baz: string, foobar: string} {\n" 1621 " return 'bar' in check;\n" 1622 "}\n"); 1623 } 1624 1625 TEST_F(FormatTestJS, OptionalTypes) { 1626 verifyFormat("function x(a?: b, c?, d?) {}"); 1627 verifyFormat("class X {\n" 1628 " y?: z;\n" 1629 " z?;\n" 1630 "}"); 1631 verifyFormat("interface X {\n" 1632 " y?(): z;\n" 1633 "}"); 1634 verifyFormat("constructor({aa}: {\n" 1635 " aa?: string,\n" 1636 " aaaaaaaa?: string,\n" 1637 " aaaaaaaaaaaaaaa?: boolean,\n" 1638 " aaaaaa?: List<string>\n" 1639 "}) {}"); 1640 } 1641 1642 TEST_F(FormatTestJS, IndexSignature) { 1643 verifyFormat("var x: {[k: string]: v};"); 1644 } 1645 1646 TEST_F(FormatTestJS, WrapAfterParen) { 1647 verifyFormat("xxxxxxxxxxx(\n" 1648 " aaa, aaa);", 1649 getGoogleJSStyleWithColumns(20)); 1650 verifyFormat("xxxxxxxxxxx(\n" 1651 " aaa, aaa, aaa,\n" 1652 " aaa, aaa, aaa);", 1653 getGoogleJSStyleWithColumns(20)); 1654 verifyFormat("xxxxxxxxxxx(\n" 1655 " aaaaaaaaaaaaaaaaaaaaaaaa,\n" 1656 " function(x) {\n" 1657 " y(); //\n" 1658 " });", 1659 getGoogleJSStyleWithColumns(40)); 1660 verifyFormat("while (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&\n" 1661 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}"); 1662 } 1663 1664 TEST_F(FormatTestJS, JSDocAnnotations) { 1665 verifyFormat("/**\n" 1666 " * @export {this.is.a.long.path.to.a.Type}\n" 1667 " */", 1668 "/**\n" 1669 " * @export {this.is.a.long.path.to.a.Type}\n" 1670 " */", 1671 getGoogleJSStyleWithColumns(20)); 1672 verifyFormat("/**\n" 1673 " * @mods {this.is.a.long.path.to.a.Type}\n" 1674 " */", 1675 "/**\n" 1676 " * @mods {this.is.a.long.path.to.a.Type}\n" 1677 " */", 1678 getGoogleJSStyleWithColumns(20)); 1679 verifyFormat("/**\n" 1680 " * @param {this.is.a.long.path.to.a.Type}\n" 1681 " */", 1682 "/**\n" 1683 " * @param {this.is.a.long.path.to.a.Type}\n" 1684 " */", 1685 getGoogleJSStyleWithColumns(20)); 1686 verifyFormat("/**\n" 1687 " * @see http://very/very/long/url/is/long\n" 1688 " */", 1689 "/**\n" 1690 " * @see http://very/very/long/url/is/long\n" 1691 " */", 1692 getGoogleJSStyleWithColumns(20)); 1693 verifyFormat( 1694 "/**\n" 1695 " * @param This is a\n" 1696 " * long comment but\n" 1697 " * no type\n" 1698 " */", 1699 "/**\n" 1700 " * @param This is a long comment but no type\n" 1701 " */", 1702 getGoogleJSStyleWithColumns(20)); 1703 // Don't break @param line, but reindent it and reflow unrelated lines. 1704 verifyFormat("{\n" 1705 " /**\n" 1706 " * long long long\n" 1707 " * long\n" 1708 " * @param {this.is.a.long.path.to.a.Type} a\n" 1709 " * long long long\n" 1710 " * long long\n" 1711 " */\n" 1712 " function f(a) {}\n" 1713 "}", 1714 "{\n" 1715 "/**\n" 1716 " * long long long long\n" 1717 " * @param {this.is.a.long.path.to.a.Type} a\n" 1718 " * long long long long\n" 1719 " * long\n" 1720 " */\n" 1721 " function f(a) {}\n" 1722 "}", 1723 getGoogleJSStyleWithColumns(20)); 1724 } 1725 1726 TEST_F(FormatTestJS, RequoteStringsSingle) { 1727 verifyFormat("var x = 'foo';", "var x = \"foo\";"); 1728 verifyFormat("var x = 'fo\\'o\\'';", "var x = \"fo'o'\";"); 1729 verifyFormat("var x = 'fo\\'o\\'';", "var x = \"fo\\'o'\";"); 1730 verifyFormat( 1731 "var x =\n" 1732 " 'foo\\'';", 1733 // Code below is 15 chars wide, doesn't fit into the line with the 1734 // \ escape added. 1735 "var x = \"foo'\";", getGoogleJSStyleWithColumns(15)); 1736 // Removes no-longer needed \ escape from ". 1737 verifyFormat("var x = 'fo\"o';", "var x = \"fo\\\"o\";"); 1738 // Code below fits into 15 chars *after* removing the \ escape. 1739 verifyFormat("var x = 'fo\"o';", "var x = \"fo\\\"o\";", 1740 getGoogleJSStyleWithColumns(15)); 1741 verifyFormat("// clang-format off\n" 1742 "let x = \"double\";\n" 1743 "// clang-format on\n" 1744 "let x = 'single';\n", 1745 "// clang-format off\n" 1746 "let x = \"double\";\n" 1747 "// clang-format on\n" 1748 "let x = \"single\";\n"); 1749 } 1750 1751 TEST_F(FormatTestJS, RequoteAndIndent) { 1752 verifyFormat("let x = someVeryLongFunctionThatGoesOnAndOn(\n" 1753 " 'double quoted string that needs wrapping');", 1754 "let x = someVeryLongFunctionThatGoesOnAndOn(" 1755 "\"double quoted string that needs wrapping\");"); 1756 1757 verifyFormat("let x =\n" 1758 " 'foo\\'oo';\n" 1759 "let x =\n" 1760 " 'foo\\'oo';", 1761 "let x=\"foo'oo\";\n" 1762 "let x=\"foo'oo\";", 1763 getGoogleJSStyleWithColumns(15)); 1764 } 1765 1766 TEST_F(FormatTestJS, RequoteStringsDouble) { 1767 FormatStyle DoubleQuotes = getGoogleStyle(FormatStyle::LK_JavaScript); 1768 DoubleQuotes.JavaScriptQuotes = FormatStyle::JSQS_Double; 1769 verifyFormat("var x = \"foo\";", DoubleQuotes); 1770 verifyFormat("var x = \"foo\";", "var x = 'foo';", DoubleQuotes); 1771 verifyFormat("var x = \"fo'o\";", "var x = 'fo\\'o';", DoubleQuotes); 1772 } 1773 1774 TEST_F(FormatTestJS, RequoteStringsLeave) { 1775 FormatStyle LeaveQuotes = getGoogleStyle(FormatStyle::LK_JavaScript); 1776 LeaveQuotes.JavaScriptQuotes = FormatStyle::JSQS_Leave; 1777 verifyFormat("var x = \"foo\";", LeaveQuotes); 1778 verifyFormat("var x = 'foo';", LeaveQuotes); 1779 } 1780 1781 TEST_F(FormatTestJS, SupportShebangLines) { 1782 verifyFormat("#!/usr/bin/env node\n" 1783 "var x = hello();", 1784 "#!/usr/bin/env node\n" 1785 "var x = hello();"); 1786 } 1787 1788 TEST_F(FormatTestJS, NonNullAssertionOperator) { 1789 verifyFormat("let x = foo!.bar();\n"); 1790 verifyFormat("let x = foo ? bar! : baz;\n"); 1791 verifyFormat("let x = !foo;\n"); 1792 verifyFormat("let x = foo[0]!;\n"); 1793 verifyFormat("let x = (foo)!;\n"); 1794 verifyFormat("let x = foo! - 1;\n"); 1795 verifyFormat("let x = {foo: 1}!;\n"); 1796 verifyFormat( 1797 "let x = hello.foo()!\n" 1798 " .foo()!\n" 1799 " .foo()!\n" 1800 " .foo()!;\n", 1801 getGoogleJSStyleWithColumns(20)); 1802 verifyFormat("let x = namespace!;\n"); 1803 verifyFormat("return !!x;\n"); 1804 } 1805 1806 TEST_F(FormatTestJS, Conditional) { 1807 verifyFormat("y = x ? 1 : 2;"); 1808 verifyFormat("x ? 1 : 2;"); 1809 verifyFormat("class Foo {\n" 1810 " field = true ? 1 : 2;\n" 1811 " method(a = true ? 1 : 2) {}\n" 1812 "}"); 1813 } 1814 1815 TEST_F(FormatTestJS, ImportComments) { 1816 verifyFormat("import {x} from 'x'; // from some location", 1817 getGoogleJSStyleWithColumns(25)); 1818 verifyFormat("// taze: x from 'location'", getGoogleJSStyleWithColumns(10)); 1819 verifyFormat("/// <reference path=\"some/location\" />", getGoogleJSStyleWithColumns(10)); 1820 } 1821 1822 TEST_F(FormatTestJS, Exponentiation) { 1823 verifyFormat("squared = x ** 2;"); 1824 verifyFormat("squared **= 2;"); 1825 } 1826 1827 } // end namespace tooling 1828 } // end namespace clang 1829