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