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 verifyFormat("for await (const x of y) {\n" 552 " console.log(x);\n" 553 "}\n"); 554 verifyFormat("function asyncLoop() {\n" 555 " for await (const x of y) {\n" 556 " console.log(x);\n" 557 " }\n" 558 "}\n"); 559 } 560 561 TEST_F(FormatTestJS, FunctionParametersTrailingComma) { 562 verifyFormat("function trailingComma(\n" 563 " p1,\n" 564 " p2,\n" 565 " p3,\n" 566 ") {\n" 567 " a; //\n" 568 "}\n", 569 "function trailingComma(p1, p2, p3,) {\n" 570 " a; //\n" 571 "}\n"); 572 verifyFormat("trailingComma(\n" 573 " p1,\n" 574 " p2,\n" 575 " p3,\n" 576 ");\n", 577 "trailingComma(p1, p2, p3,);\n"); 578 verifyFormat("trailingComma(\n" 579 " p1 // hello\n" 580 ");\n", 581 "trailingComma(p1 // hello\n" 582 ");\n"); 583 } 584 585 TEST_F(FormatTestJS, ArrayLiterals) { 586 verifyFormat("var aaaaa: List<SomeThing> =\n" 587 " [new SomeThingAAAAAAAAAAAA(), new SomeThingBBBBBBBBB()];"); 588 verifyFormat("return [\n" 589 " aaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 590 " ccccccccccccccccccccccccccc\n" 591 "];"); 592 verifyFormat("return [\n" 593 " aaaa().bbbbbbbb('A'),\n" 594 " aaaa().bbbbbbbb('B'),\n" 595 " aaaa().bbbbbbbb('C'),\n" 596 "];"); 597 verifyFormat("var someVariable = SomeFunction([\n" 598 " aaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 599 " ccccccccccccccccccccccccccc\n" 600 "]);"); 601 verifyFormat("var someVariable = SomeFunction([\n" 602 " [aaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbb],\n" 603 "]);", 604 getGoogleJSStyleWithColumns(51)); 605 verifyFormat("var someVariable = SomeFunction(aaaa, [\n" 606 " aaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 607 " ccccccccccccccccccccccccccc\n" 608 "]);"); 609 verifyFormat("var someVariable = SomeFunction(\n" 610 " aaaa,\n" 611 " [\n" 612 " aaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 613 " cccccccccccccccccccccccccc\n" 614 " ],\n" 615 " aaaa);"); 616 verifyFormat("var aaaa = aaaaa || // wrap\n" 617 " [];"); 618 619 verifyFormat("someFunction([], {a: a});"); 620 621 verifyFormat("var string = [\n" 622 " 'aaaaaa',\n" 623 " 'bbbbbb',\n" 624 "].join('+');"); 625 } 626 627 TEST_F(FormatTestJS, ColumnLayoutForArrayLiterals) { 628 verifyFormat("var array = [\n" 629 " a, a, a, a, a, a, a, a, a, a, a, a, a, a, a,\n" 630 " a, a, a, a, a, a, a, a, a, a, a, a, a, a, a,\n" 631 "];"); 632 verifyFormat("var array = someFunction([\n" 633 " a, a, a, a, a, a, a, a, a, a, a, a, a, a, a,\n" 634 " a, a, a, a, a, a, a, a, a, a, a, a, a, a, a,\n" 635 "]);"); 636 } 637 638 TEST_F(FormatTestJS, FunctionLiterals) { 639 FormatStyle Style = getGoogleStyle(FormatStyle::LK_JavaScript); 640 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline; 641 verifyFormat("doFoo(function() {});"); 642 verifyFormat("doFoo(function() { return 1; });", Style); 643 verifyFormat("var func = function() {\n" 644 " return 1;\n" 645 "};"); 646 verifyFormat("var func = //\n" 647 " function() {\n" 648 " return 1;\n" 649 "};"); 650 verifyFormat("return {\n" 651 " body: {\n" 652 " setAttribute: function(key, val) { this[key] = val; },\n" 653 " getAttribute: function(key) { return this[key]; },\n" 654 " style: {direction: ''}\n" 655 " }\n" 656 "};", 657 Style); 658 verifyFormat("abc = xyz ? function() {\n" 659 " return 1;\n" 660 "} : function() {\n" 661 " return -1;\n" 662 "};"); 663 664 verifyFormat("var closure = goog.bind(\n" 665 " function() { // comment\n" 666 " foo();\n" 667 " bar();\n" 668 " },\n" 669 " this, arg1IsReallyLongAndNeedsLineBreaks,\n" 670 " arg3IsReallyLongAndNeedsLineBreaks);"); 671 verifyFormat("var closure = goog.bind(function() { // comment\n" 672 " foo();\n" 673 " bar();\n" 674 "}, this);"); 675 verifyFormat("return {\n" 676 " a: 'E',\n" 677 " b: function() {\n" 678 " return function() {\n" 679 " f(); //\n" 680 " };\n" 681 " }\n" 682 "};"); 683 verifyFormat("{\n" 684 " var someVariable = function(x) {\n" 685 " return x.zIsTooLongForOneLineWithTheDeclarationLine();\n" 686 " };\n" 687 "}"); 688 verifyFormat("someLooooooooongFunction(\n" 689 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 690 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 691 " function(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n" 692 " // code\n" 693 " });"); 694 695 verifyFormat("return {\n" 696 " a: function SomeFunction() {\n" 697 " // ...\n" 698 " return 1;\n" 699 " }\n" 700 "};"); 701 verifyFormat("this.someObject.doSomething(aaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 702 " .then(goog.bind(function(aaaaaaaaaaa) {\n" 703 " someFunction();\n" 704 " someFunction();\n" 705 " }, this), aaaaaaaaaaaaaaaaa);"); 706 707 verifyFormat("someFunction(goog.bind(function() {\n" 708 " doSomething();\n" 709 " doSomething();\n" 710 "}, this), goog.bind(function() {\n" 711 " doSomething();\n" 712 " doSomething();\n" 713 "}, this));"); 714 715 verifyFormat("SomeFunction(function() {\n" 716 " foo();\n" 717 " bar();\n" 718 "}.bind(this));"); 719 720 verifyFormat("SomeFunction((function() {\n" 721 " foo();\n" 722 " bar();\n" 723 " }).bind(this));"); 724 725 // FIXME: This is bad, we should be wrapping before "function() {". 726 verifyFormat("someFunction(function() {\n" 727 " doSomething(); // break\n" 728 "})\n" 729 " .doSomethingElse(\n" 730 " // break\n" 731 " );"); 732 733 Style.ColumnLimit = 33; 734 verifyFormat("f({a: function() { return 1; }});", Style); 735 Style.ColumnLimit = 32; 736 verifyFormat("f({\n" 737 " a: function() { return 1; }\n" 738 "});", 739 Style); 740 741 } 742 743 TEST_F(FormatTestJS, InliningFunctionLiterals) { 744 FormatStyle Style = getGoogleStyle(FormatStyle::LK_JavaScript); 745 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline; 746 verifyFormat("var func = function() {\n" 747 " return 1;\n" 748 "};", 749 Style); 750 verifyFormat("var func = doSomething(function() { return 1; });", Style); 751 verifyFormat("var outer = function() {\n" 752 " var inner = function() { return 1; }\n" 753 "};", 754 Style); 755 verifyFormat("function outer1(a, b) {\n" 756 " function inner1(a, b) { return a; }\n" 757 "}", 758 Style); 759 760 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All; 761 verifyFormat("var func = function() { return 1; };", Style); 762 verifyFormat("var func = doSomething(function() { return 1; });", Style); 763 verifyFormat( 764 "var outer = function() { var inner = function() { return 1; } };", 765 Style); 766 verifyFormat("function outer1(a, b) {\n" 767 " function inner1(a, b) { return a; }\n" 768 "}", 769 Style); 770 771 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None; 772 verifyFormat("var func = function() {\n" 773 " return 1;\n" 774 "};", 775 Style); 776 verifyFormat("var func = doSomething(function() {\n" 777 " return 1;\n" 778 "});", 779 Style); 780 verifyFormat("var outer = function() {\n" 781 " var inner = function() {\n" 782 " return 1;\n" 783 " }\n" 784 "};", 785 Style); 786 verifyFormat("function outer1(a, b) {\n" 787 " function inner1(a, b) {\n" 788 " return a;\n" 789 " }\n" 790 "}", 791 Style); 792 793 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Empty; 794 verifyFormat("var func = function() {\n" 795 " return 1;\n" 796 "};", 797 Style); 798 } 799 800 TEST_F(FormatTestJS, MultipleFunctionLiterals) { 801 FormatStyle Style = getGoogleStyle(FormatStyle::LK_JavaScript); 802 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All; 803 verifyFormat("promise.then(\n" 804 " function success() {\n" 805 " doFoo();\n" 806 " doBar();\n" 807 " },\n" 808 " function error() {\n" 809 " doFoo();\n" 810 " doBaz();\n" 811 " },\n" 812 " []);\n"); 813 verifyFormat("promise.then(\n" 814 " function success() {\n" 815 " doFoo();\n" 816 " doBar();\n" 817 " },\n" 818 " [],\n" 819 " function error() {\n" 820 " doFoo();\n" 821 " doBaz();\n" 822 " });\n"); 823 verifyFormat("promise.then(\n" 824 " [],\n" 825 " function success() {\n" 826 " doFoo();\n" 827 " doBar();\n" 828 " },\n" 829 " function error() {\n" 830 " doFoo();\n" 831 " doBaz();\n" 832 " });\n"); 833 834 verifyFormat("getSomeLongPromise()\n" 835 " .then(function(value) { body(); })\n" 836 " .thenCatch(function(error) {\n" 837 " body();\n" 838 " body();\n" 839 " });", 840 Style); 841 verifyFormat("getSomeLongPromise()\n" 842 " .then(function(value) {\n" 843 " body();\n" 844 " body();\n" 845 " })\n" 846 " .thenCatch(function(error) {\n" 847 " body();\n" 848 " body();\n" 849 " });"); 850 851 verifyFormat("getSomeLongPromise()\n" 852 " .then(function(value) { body(); })\n" 853 " .thenCatch(function(error) { body(); });", 854 Style); 855 856 verifyFormat("return [aaaaaaaaaaaaaaaaaaaaaa]\n" 857 " .aaaaaaa(function() {\n" 858 " //\n" 859 " })\n" 860 " .bbbbbb();"); 861 } 862 863 TEST_F(FormatTestJS, ArrowFunctions) { 864 verifyFormat("var x = (a) => {\n" 865 " return a;\n" 866 "};"); 867 verifyFormat("var x = (a) => {\n" 868 " function y() {\n" 869 " return 42;\n" 870 " }\n" 871 " return a;\n" 872 "};"); 873 verifyFormat("var x = (a: type): {some: type} => {\n" 874 " return a;\n" 875 "};"); 876 verifyFormat("var x = (a) => a;"); 877 verifyFormat("return () => [];"); 878 verifyFormat("var aaaaaaaaaaaaaaaaaaaa = {\n" 879 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa:\n" 880 " (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 881 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) =>\n" 882 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 883 "};"); 884 verifyFormat("var a = a.aaaaaaa(\n" 885 " (a: a) => aaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbbbb) &&\n" 886 " aaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbb));"); 887 verifyFormat("var a = a.aaaaaaa(\n" 888 " (a: a) => aaaaaaaaaaaaaaaaaaaaa(bbbbbbbbb) ?\n" 889 " aaaaaaaaaaaaaaaaaaaaa(bbbbbbb) :\n" 890 " aaaaaaaaaaaaaaaaaaaaa(bbbbbbb));"); 891 892 // FIXME: This is bad, we should be wrapping before "() => {". 893 verifyFormat("someFunction(() => {\n" 894 " doSomething(); // break\n" 895 "})\n" 896 " .doSomethingElse(\n" 897 " // break\n" 898 " );"); 899 } 900 901 TEST_F(FormatTestJS, ReturnStatements) { 902 verifyFormat("function() {\n" 903 " return [hello, world];\n" 904 "}"); 905 } 906 907 TEST_F(FormatTestJS, ForLoops) { 908 verifyFormat("for (var i in [2, 3]) {\n" 909 "}"); 910 verifyFormat("for (var i of [2, 3]) {\n" 911 "}"); 912 verifyFormat("for (let {a, b} of x) {\n" 913 "}"); 914 verifyFormat("for (let {a, b} in x) {\n" 915 "}"); 916 } 917 918 TEST_F(FormatTestJS, WrapRespectsAutomaticSemicolonInsertion) { 919 // The following statements must not wrap, as otherwise the program meaning 920 // would change due to automatic semicolon insertion. 921 // See http://www.ecma-international.org/ecma-262/5.1/#sec-7.9.1. 922 verifyFormat("return aaaaa;", getGoogleJSStyleWithColumns(10)); 923 verifyFormat("return /* hello! */ aaaaa;", getGoogleJSStyleWithColumns(10)); 924 verifyFormat("continue aaaaa;", getGoogleJSStyleWithColumns(10)); 925 verifyFormat("continue /* hello! */ aaaaa;", getGoogleJSStyleWithColumns(10)); 926 verifyFormat("break aaaaa;", getGoogleJSStyleWithColumns(10)); 927 verifyFormat("throw aaaaa;", getGoogleJSStyleWithColumns(10)); 928 verifyFormat("aaaaaaaaa++;", getGoogleJSStyleWithColumns(10)); 929 verifyFormat("aaaaaaaaa--;", getGoogleJSStyleWithColumns(10)); 930 verifyFormat("return [\n" 931 " aaa\n" 932 "];", 933 getGoogleJSStyleWithColumns(12)); 934 } 935 936 TEST_F(FormatTestJS, AutomaticSemicolonInsertionHeuristic) { 937 verifyFormat("a\n" 938 "b;", 939 " a \n" 940 " b ;"); 941 verifyFormat("a()\n" 942 "b;", 943 " a ()\n" 944 " b ;"); 945 verifyFormat("a[b]\n" 946 "c;", 947 "a [b]\n" 948 "c ;"); 949 verifyFormat("1\n" 950 "a;", 951 "1 \n" 952 "a ;"); 953 verifyFormat("a\n" 954 "1;", 955 "a \n" 956 "1 ;"); 957 verifyFormat("a\n" 958 "'x';", 959 "a \n" 960 " 'x';"); 961 verifyFormat("a++\n" 962 "b;", 963 "a ++\n" 964 "b ;"); 965 verifyFormat("a\n" 966 "!b && c;", 967 "a \n" 968 " ! b && c;"); 969 verifyFormat("a\n" 970 "if (1) f();", 971 " a\n" 972 " if (1) f();"); 973 verifyFormat("a\n" 974 "class X {}", 975 " a\n" 976 " class X {}"); 977 verifyFormat("var a", "var\n" 978 "a"); 979 verifyFormat("x instanceof String", "x\n" 980 "instanceof\n" 981 "String"); 982 verifyFormat("function f(@Foo bar) {}", "function f(@Foo\n" 983 " bar) {}"); 984 verifyFormat("a = true\n" 985 "return 1", 986 "a = true\n" 987 " return 1"); 988 verifyFormat("a = 's'\n" 989 "return 1", 990 "a = 's'\n" 991 " return 1"); 992 verifyFormat("a = null\n" 993 "return 1", 994 "a = null\n" 995 " return 1"); 996 // Below "class Y {}" should ideally be on its own line. 997 verifyFormat( 998 "x = {\n" 999 " a: 1\n" 1000 "} class Y {}", 1001 " x = {a : 1}\n" 1002 " class Y { }"); 1003 verifyFormat( 1004 "if (x) {\n" 1005 "}\n" 1006 "return 1", 1007 "if (x) {}\n" 1008 " return 1"); 1009 verifyFormat( 1010 "if (x) {\n" 1011 "}\n" 1012 "class X {}", 1013 "if (x) {}\n" 1014 " class X {}"); 1015 } 1016 1017 TEST_F(FormatTestJS, ImportExportASI) { 1018 verifyFormat( 1019 "import {x} from 'y'\n" 1020 "export function z() {}", 1021 "import {x} from 'y'\n" 1022 " export function z() {}"); 1023 // Below "class Y {}" should ideally be on its own line. 1024 verifyFormat( 1025 "export {x} class Y {}", 1026 " export {x}\n" 1027 " class Y {\n}"); 1028 verifyFormat( 1029 "if (x) {\n" 1030 "}\n" 1031 "export class Y {}", 1032 "if ( x ) { }\n" 1033 " export class Y {}"); 1034 } 1035 1036 TEST_F(FormatTestJS, ClosureStyleCasts) { 1037 verifyFormat("var x = /** @type {foo} */ (bar);"); 1038 } 1039 1040 TEST_F(FormatTestJS, TryCatch) { 1041 verifyFormat("try {\n" 1042 " f();\n" 1043 "} catch (e) {\n" 1044 " g();\n" 1045 "} finally {\n" 1046 " h();\n" 1047 "}"); 1048 1049 // But, of course, "catch" is a perfectly fine function name in JavaScript. 1050 verifyFormat("someObject.catch();"); 1051 verifyFormat("someObject.new();"); 1052 verifyFormat("someObject.delete();"); 1053 } 1054 1055 TEST_F(FormatTestJS, StringLiteralConcatenation) { 1056 verifyFormat("var literal = 'hello ' +\n" 1057 " 'world';"); 1058 } 1059 1060 TEST_F(FormatTestJS, RegexLiteralClassification) { 1061 // Regex literals. 1062 verifyFormat("var regex = /abc/;"); 1063 verifyFormat("f(/abc/);"); 1064 verifyFormat("f(abc, /abc/);"); 1065 verifyFormat("some_map[/abc/];"); 1066 verifyFormat("var x = a ? /abc/ : /abc/;"); 1067 verifyFormat("for (var i = 0; /abc/.test(s[i]); i++) {\n}"); 1068 verifyFormat("var x = !/abc/.test(y);"); 1069 verifyFormat("var x = foo()! / 10;"); 1070 verifyFormat("var x = a && /abc/.test(y);"); 1071 verifyFormat("var x = a || /abc/.test(y);"); 1072 verifyFormat("var x = a + /abc/.search(y);"); 1073 verifyFormat("/abc/.search(y);"); 1074 verifyFormat("var regexs = {/abc/, /abc/};"); 1075 verifyFormat("return /abc/;"); 1076 1077 // Not regex literals. 1078 verifyFormat("var a = a / 2 + b / 3;"); 1079 verifyFormat("var a = a++ / 2;"); 1080 // Prefix unary can operate on regex literals, not that it makes sense. 1081 verifyFormat("var a = ++/a/;"); 1082 1083 // This is a known issue, regular expressions are incorrectly detected if 1084 // directly following a closing parenthesis. 1085 verifyFormat("if (foo) / bar /.exec(baz);"); 1086 } 1087 1088 TEST_F(FormatTestJS, RegexLiteralSpecialCharacters) { 1089 verifyFormat("var regex = /=/;"); 1090 verifyFormat("var regex = /a*/;"); 1091 verifyFormat("var regex = /a+/;"); 1092 verifyFormat("var regex = /a?/;"); 1093 verifyFormat("var regex = /.a./;"); 1094 verifyFormat("var regex = /a\\*/;"); 1095 verifyFormat("var regex = /^a$/;"); 1096 verifyFormat("var regex = /\\/a/;"); 1097 verifyFormat("var regex = /(?:x)/;"); 1098 verifyFormat("var regex = /x(?=y)/;"); 1099 verifyFormat("var regex = /x(?!y)/;"); 1100 verifyFormat("var regex = /x|y/;"); 1101 verifyFormat("var regex = /a{2}/;"); 1102 verifyFormat("var regex = /a{1,3}/;"); 1103 1104 verifyFormat("var regex = /[abc]/;"); 1105 verifyFormat("var regex = /[^abc]/;"); 1106 verifyFormat("var regex = /[\\b]/;"); 1107 verifyFormat("var regex = /[/]/;"); 1108 verifyFormat("var regex = /[\\/]/;"); 1109 verifyFormat("var regex = /\\[/;"); 1110 verifyFormat("var regex = /\\\\[/]/;"); 1111 verifyFormat("var regex = /}[\"]/;"); 1112 verifyFormat("var regex = /}[/\"]/;"); 1113 verifyFormat("var regex = /}[\"/]/;"); 1114 1115 verifyFormat("var regex = /\\b/;"); 1116 verifyFormat("var regex = /\\B/;"); 1117 verifyFormat("var regex = /\\d/;"); 1118 verifyFormat("var regex = /\\D/;"); 1119 verifyFormat("var regex = /\\f/;"); 1120 verifyFormat("var regex = /\\n/;"); 1121 verifyFormat("var regex = /\\r/;"); 1122 verifyFormat("var regex = /\\s/;"); 1123 verifyFormat("var regex = /\\S/;"); 1124 verifyFormat("var regex = /\\t/;"); 1125 verifyFormat("var regex = /\\v/;"); 1126 verifyFormat("var regex = /\\w/;"); 1127 verifyFormat("var regex = /\\W/;"); 1128 verifyFormat("var regex = /a(a)\\1/;"); 1129 verifyFormat("var regex = /\\0/;"); 1130 verifyFormat("var regex = /\\\\/g;"); 1131 verifyFormat("var regex = /\\a\\\\/g;"); 1132 verifyFormat("var regex = /\a\\//g;"); 1133 verifyFormat("var regex = /a\\//;\n" 1134 "var x = 0;"); 1135 verifyFormat("var regex = /'/g;", "var regex = /'/g ;"); 1136 verifyFormat("var regex = /'/g; //'", "var regex = /'/g ; //'"); 1137 verifyFormat("var regex = /\\/*/;\n" 1138 "var x = 0;", 1139 "var regex = /\\/*/;\n" 1140 "var x=0;"); 1141 verifyFormat("var x = /a\\//;", "var x = /a\\// \n;"); 1142 verifyFormat("var regex = /\"/;", getGoogleJSStyleWithColumns(16)); 1143 verifyFormat("var regex =\n" 1144 " /\"/;", 1145 getGoogleJSStyleWithColumns(15)); 1146 verifyFormat("var regex = //\n" 1147 " /a/;"); 1148 verifyFormat("var regexs = [\n" 1149 " /d/, //\n" 1150 " /aa/, //\n" 1151 "];"); 1152 } 1153 1154 TEST_F(FormatTestJS, RegexLiteralModifiers) { 1155 verifyFormat("var regex = /abc/g;"); 1156 verifyFormat("var regex = /abc/i;"); 1157 verifyFormat("var regex = /abc/m;"); 1158 verifyFormat("var regex = /abc/y;"); 1159 } 1160 1161 TEST_F(FormatTestJS, RegexLiteralLength) { 1162 verifyFormat("var regex = /aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/;", 1163 getGoogleJSStyleWithColumns(60)); 1164 verifyFormat("var regex =\n" 1165 " /aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/;", 1166 getGoogleJSStyleWithColumns(60)); 1167 verifyFormat("var regex = /\\xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/;", 1168 getGoogleJSStyleWithColumns(50)); 1169 } 1170 1171 TEST_F(FormatTestJS, RegexLiteralExamples) { 1172 verifyFormat("var regex = search.match(/(?:\?|&)times=([^?&]+)/i);"); 1173 } 1174 1175 TEST_F(FormatTestJS, IgnoresMpegTS) { 1176 std::string MpegTS(200, ' '); 1177 MpegTS.replace(0, strlen("nearlyLooks + like + ts + code; "), 1178 "nearlyLooks + like + ts + code; "); 1179 MpegTS[0] = 0x47; 1180 MpegTS[188] = 0x47; 1181 verifyFormat(MpegTS, MpegTS); 1182 } 1183 1184 TEST_F(FormatTestJS, TypeAnnotations) { 1185 verifyFormat("var x: string;"); 1186 verifyFormat("var x: {a: string; b: number;} = {};"); 1187 verifyFormat("function x(): string {\n return 'x';\n}"); 1188 verifyFormat("function x(): {x: string} {\n return {x: 'x'};\n}"); 1189 verifyFormat("function x(y: string): string {\n return 'x';\n}"); 1190 verifyFormat("for (var y: string in x) {\n x();\n}"); 1191 verifyFormat("for (var y: string of x) {\n x();\n}"); 1192 verifyFormat("function x(y: {a?: number;} = {}): number {\n" 1193 " return 12;\n" 1194 "}"); 1195 verifyFormat("((a: string, b: number): string => a + b);"); 1196 verifyFormat("var x: (y: number) => string;"); 1197 verifyFormat("var x: P<string, (a: number) => string>;"); 1198 verifyFormat("var x = {\n" 1199 " y: function(): z {\n" 1200 " return 1;\n" 1201 " }\n" 1202 "};"); 1203 verifyFormat("var x = {\n" 1204 " y: function(): {a: number} {\n" 1205 " return 1;\n" 1206 " }\n" 1207 "};"); 1208 verifyFormat("function someFunc(args: string[]):\n" 1209 " {longReturnValue: string[]} {}", 1210 getGoogleJSStyleWithColumns(60)); 1211 verifyFormat( 1212 "var someValue = (v as aaaaaaaaaaaaaaaaaaaa<T>[])\n" 1213 " .someFunction(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 1214 } 1215 1216 TEST_F(FormatTestJS, UnionIntersectionTypes) { 1217 verifyFormat("let x: A|B = A | B;"); 1218 verifyFormat("let x: A&B|C = A & B;"); 1219 verifyFormat("let x: Foo<A|B> = new Foo<A|B>();"); 1220 verifyFormat("function(x: A|B): C&D {}"); 1221 verifyFormat("function(x: A|B = A | B): C&D {}"); 1222 verifyFormat("function x(path: number|string) {}"); 1223 verifyFormat("function x(): string|number {}"); 1224 verifyFormat("type Foo = Bar|Baz;"); 1225 verifyFormat("type Foo = Bar<X>|Baz;"); 1226 verifyFormat("type Foo = (Bar<X>|Baz);"); 1227 verifyFormat("let x: Bar|Baz;"); 1228 verifyFormat("let x: Bar<X>|Baz;"); 1229 verifyFormat("let x: (Foo|Bar)[];"); 1230 } 1231 1232 TEST_F(FormatTestJS, ClassDeclarations) { 1233 verifyFormat("class C {\n x: string = 12;\n}"); 1234 verifyFormat("class C {\n x(): string => 12;\n}"); 1235 verifyFormat("class C {\n ['x' + 2]: string = 12;\n}"); 1236 verifyFormat("class C {\n private x: string = 12;\n}"); 1237 verifyFormat("class C {\n private static x: string = 12;\n}"); 1238 verifyFormat("class C {\n static x(): string {\n return 'asd';\n }\n}"); 1239 verifyFormat("class C extends P implements I {}"); 1240 verifyFormat("class C extends p.P implements i.I {}"); 1241 verifyFormat( 1242 "x(class {\n" 1243 " a(): A {}\n" 1244 "});"); 1245 verifyFormat("class Test {\n" 1246 " aaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaaaa):\n" 1247 " aaaaaaaaaaaaaaaaaaaaaa {}\n" 1248 "}"); 1249 verifyFormat("foo = class Name {\n" 1250 " constructor() {}\n" 1251 "};"); 1252 verifyFormat("foo = class {\n" 1253 " constructor() {}\n" 1254 "};"); 1255 verifyFormat("class C {\n" 1256 " x: {y: Z;} = {};\n" 1257 " private y: {y: Z;} = {};\n" 1258 "}"); 1259 1260 // ':' is not a type declaration here. 1261 verifyFormat("class X {\n" 1262 " subs = {\n" 1263 " 'b': {\n" 1264 " 'c': 1,\n" 1265 " },\n" 1266 " };\n" 1267 "}"); 1268 verifyFormat("@Component({\n" 1269 " moduleId: module.id,\n" 1270 "})\n" 1271 "class SessionListComponent implements OnDestroy, OnInit {\n" 1272 "}"); 1273 } 1274 1275 TEST_F(FormatTestJS, InterfaceDeclarations) { 1276 verifyFormat("interface I {\n" 1277 " x: string;\n" 1278 " enum: string[];\n" 1279 " enum?: string[];\n" 1280 "}\n" 1281 "var y;"); 1282 // Ensure that state is reset after parsing the interface. 1283 verifyFormat("interface a {}\n" 1284 "export function b() {}\n" 1285 "var x;"); 1286 1287 // Arrays of object type literals. 1288 verifyFormat("interface I {\n" 1289 " o: {}[];\n" 1290 "}"); 1291 } 1292 1293 TEST_F(FormatTestJS, EnumDeclarations) { 1294 verifyFormat("enum Foo {\n" 1295 " A = 1,\n" 1296 " B\n" 1297 "}"); 1298 verifyFormat("export /* somecomment*/ enum Foo {\n" 1299 " A = 1,\n" 1300 " B\n" 1301 "}"); 1302 verifyFormat("enum Foo {\n" 1303 " A = 1, // comment\n" 1304 " B\n" 1305 "}\n" 1306 "var x = 1;"); 1307 } 1308 1309 TEST_F(FormatTestJS, MetadataAnnotations) { 1310 verifyFormat("@A\nclass C {\n}"); 1311 verifyFormat("@A({arg: 'value'})\nclass C {\n}"); 1312 verifyFormat("@A\n@B\nclass C {\n}"); 1313 verifyFormat("class C {\n @A x: string;\n}"); 1314 verifyFormat("class C {\n" 1315 " @A\n" 1316 " private x(): string {\n" 1317 " return 'y';\n" 1318 " }\n" 1319 "}"); 1320 verifyFormat("class C {\n" 1321 " private x(@A x: string) {}\n" 1322 "}"); 1323 verifyFormat("class X {}\n" 1324 "class Y {}"); 1325 verifyFormat("class X {\n" 1326 " @property() private isReply = false;\n" 1327 "}\n"); 1328 } 1329 1330 TEST_F(FormatTestJS, TypeAliases) { 1331 verifyFormat("type X = number;\n" 1332 "class C {}"); 1333 verifyFormat("type X<Y> = Z<Y>;"); 1334 verifyFormat("type X = {\n" 1335 " y: number\n" 1336 "};\n" 1337 "class C {}"); 1338 } 1339 1340 TEST_F(FormatTestJS, TypeInterfaceLineWrapping) { 1341 const FormatStyle &Style = getGoogleJSStyleWithColumns(20); 1342 verifyFormat("type LongTypeIsReallyUnreasonablyLong =\n" 1343 " string;\n", 1344 "type LongTypeIsReallyUnreasonablyLong = string;\n", 1345 Style); 1346 verifyFormat( 1347 "interface AbstractStrategyFactoryProvider {\n" 1348 " a: number\n" 1349 "}\n", 1350 "interface AbstractStrategyFactoryProvider { a: number }\n", 1351 Style); 1352 } 1353 1354 TEST_F(FormatTestJS, Modules) { 1355 verifyFormat("import SomeThing from 'some/module.js';"); 1356 verifyFormat("import {X, Y} from 'some/module.js';"); 1357 verifyFormat("import a, {X, Y} from 'some/module.js';"); 1358 verifyFormat("import {X, Y,} from 'some/module.js';"); 1359 verifyFormat("import {X as myLocalX, Y as myLocalY} from 'some/module.js';"); 1360 // Ensure Automatic Semicolon Insertion does not break on "as\n". 1361 verifyFormat("import {X as myX} from 'm';", "import {X as\n" 1362 " myX} from 'm';"); 1363 verifyFormat("import * as lib from 'some/module.js';"); 1364 verifyFormat("var x = {import: 1};\nx.import = 2;"); 1365 1366 verifyFormat("export function fn() {\n" 1367 " return 'fn';\n" 1368 "}"); 1369 verifyFormat("export function A() {}\n" 1370 "export default function B() {}\n" 1371 "export function C() {}"); 1372 verifyFormat("export default () => {\n" 1373 " let x = 1;\n" 1374 " return x;\n" 1375 "}"); 1376 verifyFormat("export const x = 12;"); 1377 verifyFormat("export default class X {}"); 1378 verifyFormat("export {X, Y} from 'some/module.js';"); 1379 verifyFormat("export {X, Y,} from 'some/module.js';"); 1380 verifyFormat("export {SomeVeryLongExport as X, " 1381 "SomeOtherVeryLongExport as Y} from 'some/module.js';"); 1382 // export without 'from' is wrapped. 1383 verifyFormat("export let someRatherLongVariableName =\n" 1384 " someSurprisinglyLongVariable + someOtherRatherLongVar;"); 1385 // ... but not if from is just an identifier. 1386 verifyFormat("export {\n" 1387 " from as from,\n" 1388 " someSurprisinglyLongVariable as\n" 1389 " from\n" 1390 "};", 1391 getGoogleJSStyleWithColumns(20)); 1392 verifyFormat("export class C {\n" 1393 " x: number;\n" 1394 " y: string;\n" 1395 "}"); 1396 verifyFormat("export class X { y: number; }"); 1397 verifyFormat("export abstract class X { y: number; }"); 1398 verifyFormat("export default class X { y: number }"); 1399 verifyFormat("export default function() {\n return 1;\n}"); 1400 verifyFormat("export var x = 12;"); 1401 verifyFormat("class C {}\n" 1402 "export function f() {}\n" 1403 "var v;"); 1404 verifyFormat("export var x: number = 12;"); 1405 verifyFormat("export const y = {\n" 1406 " a: 1,\n" 1407 " b: 2\n" 1408 "};"); 1409 verifyFormat("export enum Foo {\n" 1410 " BAR,\n" 1411 " // adsdasd\n" 1412 " BAZ\n" 1413 "}"); 1414 verifyFormat("export default [\n" 1415 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 1416 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 1417 "];"); 1418 verifyFormat("export default [];"); 1419 verifyFormat("export default () => {};"); 1420 verifyFormat("export interface Foo { foo: number; }\n" 1421 "export class Bar {\n" 1422 " blah(): string {\n" 1423 " return this.blah;\n" 1424 " };\n" 1425 "}"); 1426 } 1427 1428 TEST_F(FormatTestJS, ImportWrapping) { 1429 verifyFormat("import {VeryLongImportsAreAnnoying, VeryLongImportsAreAnnoying," 1430 " VeryLongImportsAreAnnoying, VeryLongImportsAreAnnoying" 1431 "} from 'some/module.js';"); 1432 FormatStyle Style = getGoogleJSStyleWithColumns(80); 1433 Style.JavaScriptWrapImports = true; 1434 verifyFormat("import {\n" 1435 " VeryLongImportsAreAnnoying,\n" 1436 " VeryLongImportsAreAnnoying,\n" 1437 " VeryLongImportsAreAnnoying,\n" 1438 "} from 'some/module.js';", 1439 Style); 1440 verifyFormat("import {\n" 1441 " A,\n" 1442 " A,\n" 1443 "} from 'some/module.js';", 1444 Style); 1445 verifyFormat("export {\n" 1446 " A,\n" 1447 " A,\n" 1448 "} from 'some/module.js';", 1449 Style); 1450 } 1451 1452 TEST_F(FormatTestJS, TemplateStrings) { 1453 // Keeps any whitespace/indentation within the template string. 1454 verifyFormat("var x = `hello\n" 1455 " ${name}\n" 1456 " !`;", 1457 "var x = `hello\n" 1458 " ${ name }\n" 1459 " !`;"); 1460 1461 verifyFormat("var x =\n" 1462 " `hello ${world}` >= some();", 1463 getGoogleJSStyleWithColumns(34)); // Barely doesn't fit. 1464 verifyFormat("var x = `hello ${world}` >= some();", 1465 getGoogleJSStyleWithColumns(35)); // Barely fits. 1466 verifyFormat("var x = `hellö ${wörld}` >= söme();", 1467 getGoogleJSStyleWithColumns(35)); // Fits due to UTF-8. 1468 verifyFormat("var x = `hello\n" 1469 " ${world}` >=\n" 1470 " some();", 1471 "var x =\n" 1472 " `hello\n" 1473 " ${world}` >= some();", 1474 getGoogleJSStyleWithColumns(21)); // Barely doesn't fit. 1475 verifyFormat("var x = `hello\n" 1476 " ${world}` >= some();", 1477 "var x =\n" 1478 " `hello\n" 1479 " ${world}` >= some();", 1480 getGoogleJSStyleWithColumns(22)); // Barely fits. 1481 1482 verifyFormat("var x =\n" 1483 " `h`;", 1484 getGoogleJSStyleWithColumns(11)); 1485 verifyFormat("var x =\n `multi\n line`;", "var x = `multi\n line`;", 1486 getGoogleJSStyleWithColumns(13)); 1487 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 1488 " `aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa`);"); 1489 // Repro for an obscure width-miscounting issue with template strings. 1490 verifyFormat( 1491 "someLongVariable =\n" 1492 " " 1493 "`${logPrefix[11]}/${logPrefix[12]}/${logPrefix[13]}${logPrefix[14]}`;", 1494 "someLongVariable = " 1495 "`${logPrefix[11]}/${logPrefix[12]}/${logPrefix[13]}${logPrefix[14]}`;"); 1496 1497 // Make sure template strings get a proper ColumnWidth assigned, even if they 1498 // are first token in line. 1499 verifyFormat( 1500 "var a = aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 1501 " `aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa`;"); 1502 1503 // Two template strings. 1504 verifyFormat("var x = `hello` == `hello`;"); 1505 1506 // Comments in template strings. 1507 verifyFormat("var x = `//a`;\n" 1508 "var y;", 1509 "var x =\n `//a`;\n" 1510 "var y ;"); 1511 verifyFormat("var x = `/*a`;\n" 1512 "var y;", 1513 "var x =\n `/*a`;\n" 1514 "var y;"); 1515 // Unterminated string literals in a template string. 1516 verifyFormat("var x = `'`; // comment with matching quote '\n" 1517 "var y;"); 1518 verifyFormat("var x = `\"`; // comment with matching quote \"\n" 1519 "var y;"); 1520 verifyFormat("it(`'aaaaaaaaaaaaaaa `, aaaaaaaaa);", 1521 "it(`'aaaaaaaaaaaaaaa `, aaaaaaaaa) ;", 1522 getGoogleJSStyleWithColumns(40)); 1523 // Backticks in a comment - not a template string. 1524 verifyFormat("var x = 1 // `/*a`;\n" 1525 " ;", 1526 "var x =\n 1 // `/*a`;\n" 1527 " ;"); 1528 verifyFormat("/* ` */ var x = 1; /* ` */", "/* ` */ var x\n= 1; /* ` */"); 1529 // Comment spans multiple template strings. 1530 verifyFormat("var x = `/*a`;\n" 1531 "var y = ` */ `;", 1532 "var x =\n `/*a`;\n" 1533 "var y =\n ` */ `;"); 1534 // Escaped backtick. 1535 verifyFormat("var x = ` \\` a`;\n" 1536 "var y;", 1537 "var x = ` \\` a`;\n" 1538 "var y;"); 1539 // Escaped dollar. 1540 verifyFormat("var x = ` \\${foo}`;\n"); 1541 1542 // The token stream can contain two string_literals in sequence, but that 1543 // doesn't mean that they are implicitly concatenated in JavaScript. 1544 verifyFormat("var f = `aaaa ${a ? 'a' : 'b'}`;"); 1545 1546 // Ensure that scopes are appropriately set around evaluated expressions in 1547 // template strings. 1548 verifyFormat("var f = `aaaaaaaaaaaaa:${aaaaaaa.aaaaa} aaaaaaaa\n" 1549 " aaaaaaaaaaaaa:${aaaaaaa.aaaaa} aaaaaaaa`;", 1550 "var f = `aaaaaaaaaaaaa:${aaaaaaa. aaaaa} aaaaaaaa\n" 1551 " aaaaaaaaaaaaa:${ aaaaaaa. aaaaa} aaaaaaaa`;"); 1552 verifyFormat("var x = someFunction(`${})`) //\n" 1553 " .oooooooooooooooooon();"); 1554 verifyFormat("var x = someFunction(`${aaaa}${\n" 1555 " aaaaa( //\n" 1556 " aaaaa)\n" 1557 " })`);"); 1558 } 1559 1560 TEST_F(FormatTestJS, TemplateStringMultiLineExpression) { 1561 verifyFormat("var f = `aaaaaaaaaaaaaaaaaa: ${\n" 1562 " aaaaa + //\n" 1563 " bbbb\n" 1564 " }`;", 1565 "var f = `aaaaaaaaaaaaaaaaaa: ${aaaaa + //\n" 1566 " bbbb}`;"); 1567 verifyFormat("var f = `\n" 1568 " aaaaaaaaaaaaaaaaaa: ${\n" 1569 " aaaaa + //\n" 1570 " bbbb\n" 1571 " }`;", 1572 "var f = `\n" 1573 " aaaaaaaaaaaaaaaaaa: ${ aaaaa + //\n" 1574 " bbbb }`;"); 1575 verifyFormat("var f = `\n" 1576 " aaaaaaaaaaaaaaaaaa: ${\n" 1577 " someFunction(\n" 1578 " aaaaa + //\n" 1579 " bbbb)\n" 1580 " }`;", 1581 "var f = `\n" 1582 " aaaaaaaaaaaaaaaaaa: ${someFunction (\n" 1583 " aaaaa + //\n" 1584 " bbbb)}`;"); 1585 1586 // It might be preferable to wrap before "someFunction". 1587 verifyFormat("var f = `\n" 1588 " aaaaaaaaaaaaaaaaaa: ${someFunction({\n" 1589 " aaaa: aaaaa,\n" 1590 " bbbb: bbbbb,\n" 1591 " })}`;", 1592 "var f = `\n" 1593 " aaaaaaaaaaaaaaaaaa: ${someFunction ({\n" 1594 " aaaa: aaaaa,\n" 1595 " bbbb: bbbbb,\n" 1596 " })}`;"); 1597 } 1598 1599 TEST_F(FormatTestJS, TemplateStringASI) { 1600 verifyFormat("var x = `hello${world}`;", "var x = `hello${\n" 1601 " world\n" 1602 "}`;"); 1603 } 1604 1605 TEST_F(FormatTestJS, NestedTemplateStrings) { 1606 verifyFormat( 1607 "var x = `<ul>${xs.map(x => `<li>${x}</li>`).join('\\n')}</ul>`;"); 1608 verifyFormat("var x = `he${({text: 'll'}.text)}o`;"); 1609 1610 // Crashed at some point. 1611 verifyFormat("}"); 1612 } 1613 1614 TEST_F(FormatTestJS, TaggedTemplateStrings) { 1615 verifyFormat("var x = html`<ul>`;"); 1616 } 1617 1618 TEST_F(FormatTestJS, CastSyntax) { 1619 verifyFormat("var x = <type>foo;"); 1620 verifyFormat("var x = foo as type;"); 1621 verifyFormat("let x = (a + b) as\n" 1622 " LongTypeIsLong;", 1623 getGoogleJSStyleWithColumns(20)); 1624 verifyFormat("foo = <Bar[]>[\n" 1625 " 1, //\n" 1626 " 2\n" 1627 "];"); 1628 verifyFormat("var x = [{x: 1} as type];"); 1629 verifyFormat("x = x as [a, b];"); 1630 verifyFormat("x = x as {a: string};"); 1631 verifyFormat("x = x as (string);"); 1632 verifyFormat("x = x! as (string);"); 1633 verifyFormat("var x = something.someFunction() as\n" 1634 " something;", 1635 getGoogleJSStyleWithColumns(40)); 1636 } 1637 1638 TEST_F(FormatTestJS, TypeArguments) { 1639 verifyFormat("class X<Y> {}"); 1640 verifyFormat("new X<Y>();"); 1641 verifyFormat("foo<Y>(a);"); 1642 verifyFormat("var x: X<Y>[];"); 1643 verifyFormat("class C extends D<E> implements F<G>, H<I> {}"); 1644 verifyFormat("function f(a: List<any> = null) {}"); 1645 verifyFormat("function f(): List<any> {}"); 1646 verifyFormat("function aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa():\n" 1647 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb {}"); 1648 verifyFormat("function aaaaaaaaaa(\n" 1649 " aaaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaaa,\n" 1650 " aaaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaaa):\n" 1651 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa {}"); 1652 } 1653 1654 TEST_F(FormatTestJS, UserDefinedTypeGuards) { 1655 verifyFormat( 1656 "function foo(check: Object):\n" 1657 " check is {foo: string, bar: string, baz: string, foobar: string} {\n" 1658 " return 'bar' in check;\n" 1659 "}\n"); 1660 } 1661 1662 TEST_F(FormatTestJS, OptionalTypes) { 1663 verifyFormat("function x(a?: b, c?, d?) {}"); 1664 verifyFormat("class X {\n" 1665 " y?: z;\n" 1666 " z?;\n" 1667 "}"); 1668 verifyFormat("interface X {\n" 1669 " y?(): z;\n" 1670 "}"); 1671 verifyFormat("constructor({aa}: {\n" 1672 " aa?: string,\n" 1673 " aaaaaaaa?: string,\n" 1674 " aaaaaaaaaaaaaaa?: boolean,\n" 1675 " aaaaaa?: List<string>\n" 1676 "}) {}"); 1677 } 1678 1679 TEST_F(FormatTestJS, IndexSignature) { 1680 verifyFormat("var x: {[k: string]: v};"); 1681 } 1682 1683 TEST_F(FormatTestJS, WrapAfterParen) { 1684 verifyFormat("xxxxxxxxxxx(\n" 1685 " aaa, aaa);", 1686 getGoogleJSStyleWithColumns(20)); 1687 verifyFormat("xxxxxxxxxxx(\n" 1688 " aaa, aaa, aaa,\n" 1689 " aaa, aaa, aaa);", 1690 getGoogleJSStyleWithColumns(20)); 1691 verifyFormat("xxxxxxxxxxx(\n" 1692 " aaaaaaaaaaaaaaaaaaaaaaaa,\n" 1693 " function(x) {\n" 1694 " y(); //\n" 1695 " });", 1696 getGoogleJSStyleWithColumns(40)); 1697 verifyFormat("while (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&\n" 1698 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}"); 1699 } 1700 1701 TEST_F(FormatTestJS, JSDocAnnotations) { 1702 verifyFormat("/**\n" 1703 " * @export {this.is.a.long.path.to.a.Type}\n" 1704 " */", 1705 "/**\n" 1706 " * @export {this.is.a.long.path.to.a.Type}\n" 1707 " */", 1708 getGoogleJSStyleWithColumns(20)); 1709 verifyFormat("/**\n" 1710 " * @mods {this.is.a.long.path.to.a.Type}\n" 1711 " */", 1712 "/**\n" 1713 " * @mods {this.is.a.long.path.to.a.Type}\n" 1714 " */", 1715 getGoogleJSStyleWithColumns(20)); 1716 verifyFormat("/**\n" 1717 " * @param {this.is.a.long.path.to.a.Type}\n" 1718 " */", 1719 "/**\n" 1720 " * @param {this.is.a.long.path.to.a.Type}\n" 1721 " */", 1722 getGoogleJSStyleWithColumns(20)); 1723 verifyFormat("/**\n" 1724 " * @see http://very/very/long/url/is/long\n" 1725 " */", 1726 "/**\n" 1727 " * @see http://very/very/long/url/is/long\n" 1728 " */", 1729 getGoogleJSStyleWithColumns(20)); 1730 verifyFormat( 1731 "/**\n" 1732 " * @param This is a\n" 1733 " * long comment but\n" 1734 " * no type\n" 1735 " */", 1736 "/**\n" 1737 " * @param This is a long comment but no type\n" 1738 " */", 1739 getGoogleJSStyleWithColumns(20)); 1740 // Don't break @param line, but reindent it and reflow unrelated lines. 1741 verifyFormat("{\n" 1742 " /**\n" 1743 " * long long long\n" 1744 " * long\n" 1745 " * @param {this.is.a.long.path.to.a.Type} a\n" 1746 " * long long long\n" 1747 " * long long\n" 1748 " */\n" 1749 " function f(a) {}\n" 1750 "}", 1751 "{\n" 1752 "/**\n" 1753 " * long long long long\n" 1754 " * @param {this.is.a.long.path.to.a.Type} a\n" 1755 " * long long long long\n" 1756 " * long\n" 1757 " */\n" 1758 " function f(a) {}\n" 1759 "}", 1760 getGoogleJSStyleWithColumns(20)); 1761 } 1762 1763 TEST_F(FormatTestJS, RequoteStringsSingle) { 1764 verifyFormat("var x = 'foo';", "var x = \"foo\";"); 1765 verifyFormat("var x = 'fo\\'o\\'';", "var x = \"fo'o'\";"); 1766 verifyFormat("var x = 'fo\\'o\\'';", "var x = \"fo\\'o'\";"); 1767 verifyFormat( 1768 "var x =\n" 1769 " 'foo\\'';", 1770 // Code below is 15 chars wide, doesn't fit into the line with the 1771 // \ escape added. 1772 "var x = \"foo'\";", getGoogleJSStyleWithColumns(15)); 1773 // Removes no-longer needed \ escape from ". 1774 verifyFormat("var x = 'fo\"o';", "var x = \"fo\\\"o\";"); 1775 // Code below fits into 15 chars *after* removing the \ escape. 1776 verifyFormat("var x = 'fo\"o';", "var x = \"fo\\\"o\";", 1777 getGoogleJSStyleWithColumns(15)); 1778 verifyFormat("// clang-format off\n" 1779 "let x = \"double\";\n" 1780 "// clang-format on\n" 1781 "let x = 'single';\n", 1782 "// clang-format off\n" 1783 "let x = \"double\";\n" 1784 "// clang-format on\n" 1785 "let x = \"single\";\n"); 1786 } 1787 1788 TEST_F(FormatTestJS, RequoteAndIndent) { 1789 verifyFormat("let x = someVeryLongFunctionThatGoesOnAndOn(\n" 1790 " 'double quoted string that needs wrapping');", 1791 "let x = someVeryLongFunctionThatGoesOnAndOn(" 1792 "\"double quoted string that needs wrapping\");"); 1793 1794 verifyFormat("let x =\n" 1795 " 'foo\\'oo';\n" 1796 "let x =\n" 1797 " 'foo\\'oo';", 1798 "let x=\"foo'oo\";\n" 1799 "let x=\"foo'oo\";", 1800 getGoogleJSStyleWithColumns(15)); 1801 } 1802 1803 TEST_F(FormatTestJS, RequoteStringsDouble) { 1804 FormatStyle DoubleQuotes = getGoogleStyle(FormatStyle::LK_JavaScript); 1805 DoubleQuotes.JavaScriptQuotes = FormatStyle::JSQS_Double; 1806 verifyFormat("var x = \"foo\";", DoubleQuotes); 1807 verifyFormat("var x = \"foo\";", "var x = 'foo';", DoubleQuotes); 1808 verifyFormat("var x = \"fo'o\";", "var x = 'fo\\'o';", DoubleQuotes); 1809 } 1810 1811 TEST_F(FormatTestJS, RequoteStringsLeave) { 1812 FormatStyle LeaveQuotes = getGoogleStyle(FormatStyle::LK_JavaScript); 1813 LeaveQuotes.JavaScriptQuotes = FormatStyle::JSQS_Leave; 1814 verifyFormat("var x = \"foo\";", LeaveQuotes); 1815 verifyFormat("var x = 'foo';", LeaveQuotes); 1816 } 1817 1818 TEST_F(FormatTestJS, SupportShebangLines) { 1819 verifyFormat("#!/usr/bin/env node\n" 1820 "var x = hello();", 1821 "#!/usr/bin/env node\n" 1822 "var x = hello();"); 1823 } 1824 1825 TEST_F(FormatTestJS, NonNullAssertionOperator) { 1826 verifyFormat("let x = foo!.bar();\n"); 1827 verifyFormat("let x = foo ? bar! : baz;\n"); 1828 verifyFormat("let x = !foo;\n"); 1829 verifyFormat("let x = foo[0]!;\n"); 1830 verifyFormat("let x = (foo)!;\n"); 1831 verifyFormat("let x = x(foo!);\n"); 1832 verifyFormat( 1833 "a.aaaaaa(a.a!).then(\n" 1834 " x => x(x));\n", 1835 getGoogleJSStyleWithColumns(20)); 1836 verifyFormat("let x = foo! - 1;\n"); 1837 verifyFormat("let x = {foo: 1}!;\n"); 1838 verifyFormat( 1839 "let x = hello.foo()!\n" 1840 " .foo()!\n" 1841 " .foo()!\n" 1842 " .foo()!;\n", 1843 getGoogleJSStyleWithColumns(20)); 1844 verifyFormat("let x = namespace!;\n"); 1845 verifyFormat("return !!x;\n"); 1846 } 1847 1848 TEST_F(FormatTestJS, Conditional) { 1849 verifyFormat("y = x ? 1 : 2;"); 1850 verifyFormat("x ? 1 : 2;"); 1851 verifyFormat("class Foo {\n" 1852 " field = true ? 1 : 2;\n" 1853 " method(a = true ? 1 : 2) {}\n" 1854 "}"); 1855 } 1856 1857 TEST_F(FormatTestJS, ImportComments) { 1858 verifyFormat("import {x} from 'x'; // from some location", 1859 getGoogleJSStyleWithColumns(25)); 1860 verifyFormat("// taze: x from 'location'", getGoogleJSStyleWithColumns(10)); 1861 verifyFormat("/// <reference path=\"some/location\" />", getGoogleJSStyleWithColumns(10)); 1862 } 1863 1864 TEST_F(FormatTestJS, Exponentiation) { 1865 verifyFormat("squared = x ** 2;"); 1866 verifyFormat("squared **= 2;"); 1867 } 1868 1869 } // end namespace tooling 1870 } // end namespace clang 1871