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 EXPECT_EQ(Code.str(), format(test::messUp(Code), Style)); 53 } 54 }; 55 56 TEST_F(FormatTestJS, UnderstandsJavaScriptOperators) { 57 verifyFormat("a == = b;"); 58 verifyFormat("a != = b;"); 59 60 verifyFormat("a === b;"); 61 verifyFormat("aaaaaaa ===\n b;", getGoogleJSStyleWithColumns(10)); 62 verifyFormat("a !== b;"); 63 verifyFormat("aaaaaaa !==\n b;", getGoogleJSStyleWithColumns(10)); 64 verifyFormat("if (a + b + c +\n" 65 " d !==\n" 66 " e + f + g)\n" 67 " q();", 68 getGoogleJSStyleWithColumns(20)); 69 70 verifyFormat("a >> >= b;"); 71 72 verifyFormat("a >>> b;"); 73 verifyFormat("aaaaaaa >>>\n b;", getGoogleJSStyleWithColumns(10)); 74 verifyFormat("a >>>= b;"); 75 verifyFormat("aaaaaaa >>>=\n b;", getGoogleJSStyleWithColumns(10)); 76 verifyFormat("if (a + b + c +\n" 77 " d >>>\n" 78 " e + f + g)\n" 79 " q();", 80 getGoogleJSStyleWithColumns(20)); 81 verifyFormat("var x = aaaaaaaaaa ?\n" 82 " bbbbbb :\n" 83 " ccc;", 84 getGoogleJSStyleWithColumns(20)); 85 86 verifyFormat("var b = a.map((x) => x + 1);"); 87 verifyFormat("return ('aaa') in bbbb;"); 88 89 // ES6 spread operator. 90 verifyFormat("someFunction(...a);"); 91 verifyFormat("var x = [1, ...a, 2];"); 92 } 93 94 TEST_F(FormatTestJS, UnderstandsAmpAmp) { 95 verifyFormat("e && e.SomeFunction();"); 96 } 97 98 TEST_F(FormatTestJS, LiteralOperatorsCanBeKeywords) { 99 verifyFormat("not.and.or.not_eq = 1;"); 100 } 101 102 TEST_F(FormatTestJS, ES6DestructuringAssignment) { 103 verifyFormat("var [a, b, c] = [1, 2, 3];"); 104 verifyFormat("var {a, b} = {a: 1, b: 2};"); 105 } 106 107 TEST_F(FormatTestJS, ContainerLiterals) { 108 verifyFormat("var x = {y: function(a) { return a; }};"); 109 verifyFormat("return {\n" 110 " link: function() {\n" 111 " f(); //\n" 112 " }\n" 113 "};"); 114 verifyFormat("return {\n" 115 " a: a,\n" 116 " link: function() {\n" 117 " f(); //\n" 118 " }\n" 119 "};"); 120 verifyFormat("return {\n" 121 " a: a,\n" 122 " link: function() {\n" 123 " f(); //\n" 124 " },\n" 125 " link: function() {\n" 126 " f(); //\n" 127 " }\n" 128 "};"); 129 verifyFormat("var stuff = {\n" 130 " // comment for update\n" 131 " update: false,\n" 132 " // comment for modules\n" 133 " modules: false,\n" 134 " // comment for tasks\n" 135 " tasks: false\n" 136 "};"); 137 verifyFormat("return {\n" 138 " 'finish':\n" 139 " //\n" 140 " a\n" 141 "};"); 142 verifyFormat("var obj = {\n" 143 " fooooooooo: function(x) {\n" 144 " return x.zIsTooLongForOneLineWithTheDeclarationLine();\n" 145 " }\n" 146 "};"); 147 // Simple object literal, as opposed to enum style below. 148 verifyFormat("var obj = {a: 123};"); 149 // Enum style top level assignment. 150 verifyFormat("X = {\n a: 123\n};"); 151 verifyFormat("X.Y = {\n a: 123\n};"); 152 // But only on the top level, otherwise its a plain object literal assignment. 153 verifyFormat("function x() {\n" 154 " y = {z: 1};\n" 155 "}"); 156 verifyFormat("x = foo && {a: 123};"); 157 158 // Arrow functions in object literals. 159 verifyFormat("var x = {y: (a) => { return a; }};"); 160 verifyFormat("var x = {y: (a) => a};"); 161 162 // Computed keys. 163 verifyFormat("var x = {[a]: 1, b: 2, [c]: 3};"); 164 verifyFormat("var x = {\n" 165 " [a]: 1,\n" 166 " b: 2,\n" 167 " [c]: 3,\n" 168 "};"); 169 } 170 171 TEST_F(FormatTestJS, MethodsInObjectLiterals) { 172 verifyFormat("var o = {\n" 173 " value: 'test',\n" 174 " get value() { // getter\n" 175 " return this.value;\n" 176 " }\n" 177 "};"); 178 verifyFormat("var o = {\n" 179 " value: 'test',\n" 180 " set value(val) { // setter\n" 181 " this.value = val;\n" 182 " }\n" 183 "};"); 184 verifyFormat("var o = {\n" 185 " value: 'test',\n" 186 " someMethod(val) { // method\n" 187 " doSomething(this.value + val);\n" 188 " }\n" 189 "};"); 190 verifyFormat("var o = {\n" 191 " someMethod(val) { // method\n" 192 " doSomething(this.value + val);\n" 193 " },\n" 194 " someOtherMethod(val) { // method\n" 195 " doSomething(this.value + val);\n" 196 " }\n" 197 "};"); 198 } 199 200 TEST_F(FormatTestJS, SpacesInContainerLiterals) { 201 verifyFormat("var arr = [1, 2, 3];"); 202 verifyFormat("f({a: 1, b: 2, c: 3});"); 203 204 verifyFormat("var object_literal_with_long_name = {\n" 205 " a: 'aaaaaaaaaaaaaaaaaa',\n" 206 " b: 'bbbbbbbbbbbbbbbbbb'\n" 207 "};"); 208 209 verifyFormat("f({a: 1, b: 2, c: 3});", 210 getChromiumStyle(FormatStyle::LK_JavaScript)); 211 verifyFormat("f({'a': [{}]});"); 212 } 213 214 TEST_F(FormatTestJS, SingleQuoteStrings) { 215 verifyFormat("this.function('', true);"); 216 } 217 218 TEST_F(FormatTestJS, GoogScopes) { 219 verifyFormat("goog.scope(function() {\n" 220 "var x = a.b;\n" 221 "var y = c.d;\n" 222 "}); // goog.scope"); 223 verifyFormat("goog.scope(function() {\n" 224 "// test\n" 225 "var x = 0;\n" 226 "// test\n" 227 "});"); 228 } 229 230 TEST_F(FormatTestJS, GoogModules) { 231 verifyFormat("goog.module('this.is.really.absurdly.long');", 232 getGoogleJSStyleWithColumns(40)); 233 verifyFormat("goog.require('this.is.really.absurdly.long');", 234 getGoogleJSStyleWithColumns(40)); 235 verifyFormat("goog.provide('this.is.really.absurdly.long');", 236 getGoogleJSStyleWithColumns(40)); 237 verifyFormat("var long = goog.require('this.is.really.absurdly.long');", 238 getGoogleJSStyleWithColumns(40)); 239 240 // These should be wrapped normally. 241 verifyFormat( 242 "var MyLongClassName =\n" 243 " goog.module.get('my.long.module.name.followedBy.MyLongClassName');"); 244 } 245 246 TEST_F(FormatTestJS, FormatsFreestandingFunctions) { 247 verifyFormat("function outer1(a, b) {\n" 248 " function inner1(a, b) { return a; }\n" 249 " inner1(a, b);\n" 250 "}\n" 251 "function outer2(a, b) {\n" 252 " function inner2(a, b) { return a; }\n" 253 " inner2(a, b);\n" 254 "}"); 255 verifyFormat("function f() {}"); 256 } 257 258 TEST_F(FormatTestJS, ArrayLiterals) { 259 verifyFormat( 260 "var aaaaa: List<SomeThing> =\n" 261 " [new SomeThingAAAAAAAAAAAA(), new SomeThingBBBBBBBBB()];"); 262 verifyFormat("return [\n" 263 " aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 264 " bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 265 " ccccccccccccccccccccccccccc\n" 266 "];"); 267 verifyFormat("var someVariable = SomeFuntion([\n" 268 " aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 269 " bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 270 " ccccccccccccccccccccccccccc\n" 271 "]);"); 272 verifyFormat("var someVariable = SomeFuntion([\n" 273 " [aaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbb],\n" 274 "]);", 275 getGoogleJSStyleWithColumns(51)); 276 verifyFormat("var someVariable = SomeFuntion(aaaa, [\n" 277 " aaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 278 " bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 279 " ccccccccccccccccccccccccccc\n" 280 "]);"); 281 282 verifyFormat("someFunction([], {a: a});"); 283 } 284 285 TEST_F(FormatTestJS, FunctionLiterals) { 286 verifyFormat("doFoo(function() {});"); 287 verifyFormat("doFoo(function() { return 1; });"); 288 verifyFormat("var func = function() {\n" 289 " return 1;\n" 290 "};"); 291 verifyFormat("return {\n" 292 " body: {\n" 293 " setAttribute: function(key, val) { this[key] = val; },\n" 294 " getAttribute: function(key) { return this[key]; },\n" 295 " style: {direction: ''}\n" 296 " }\n" 297 "};"); 298 EXPECT_EQ("abc = xyz ?\n" 299 " function() {\n" 300 " return 1;\n" 301 " } :\n" 302 " function() {\n" 303 " return -1;\n" 304 " };", 305 format("abc=xyz?function(){return 1;}:function(){return -1;};")); 306 307 verifyFormat("var closure = goog.bind(\n" 308 " function() { // comment\n" 309 " foo();\n" 310 " bar();\n" 311 " },\n" 312 " this, arg1IsReallyLongAndNeeedsLineBreaks,\n" 313 " arg3IsReallyLongAndNeeedsLineBreaks);"); 314 verifyFormat("var closure = goog.bind(function() { // comment\n" 315 " foo();\n" 316 " bar();\n" 317 "}, this);"); 318 verifyFormat("return {\n" 319 " a: 'E',\n" 320 " b: function() {\n" 321 " return function() {\n" 322 " f(); //\n" 323 " };\n" 324 " }\n" 325 "};"); 326 verifyFormat("{\n" 327 " var someVariable = function(x) {\n" 328 " return x.zIsTooLongForOneLineWithTheDeclarationLine();\n" 329 " };\n" 330 "}"); 331 verifyFormat("someLooooooooongFunction(\n" 332 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 333 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 334 " function(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n" 335 " // code\n" 336 " });"); 337 338 verifyFormat("f({a: function() { return 1; }});", 339 getGoogleJSStyleWithColumns(33)); 340 verifyFormat("f({\n" 341 " a: function() { return 1; }\n" 342 "});", 343 getGoogleJSStyleWithColumns(32)); 344 345 verifyFormat("return {\n" 346 " a: function SomeFunction() {\n" 347 " // ...\n" 348 " return 1;\n" 349 " }\n" 350 "};"); 351 verifyFormat("this.someObject.doSomething(aaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 352 " .then(goog.bind(function(aaaaaaaaaaa) {\n" 353 " someFunction();\n" 354 " someFunction();\n" 355 " }, this), aaaaaaaaaaaaaaaaa);"); 356 357 // FIXME: This is not ideal yet. 358 verifyFormat("someFunction(goog.bind(\n" 359 " function() {\n" 360 " doSomething();\n" 361 " doSomething();\n" 362 " },\n" 363 " this),\n" 364 " goog.bind(function() {\n" 365 " doSomething();\n" 366 " doSomething();\n" 367 " }, this));"); 368 369 // FIXME: This is bad, we should be wrapping before "function() {". 370 verifyFormat("someFunction(function() {\n" 371 " doSomething(); // break\n" 372 "})\n" 373 " .doSomethingElse(\n" 374 " // break\n" 375 " );"); 376 } 377 378 TEST_F(FormatTestJS, InliningFunctionLiterals) { 379 FormatStyle Style = getGoogleStyle(FormatStyle::LK_JavaScript); 380 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline; 381 verifyFormat("var func = function() {\n" 382 " return 1;\n" 383 "};", 384 Style); 385 verifyFormat("var func = doSomething(function() { return 1; });", Style); 386 verifyFormat("var outer = function() {\n" 387 " var inner = function() { return 1; }\n" 388 "};", 389 Style); 390 verifyFormat("function outer1(a, b) {\n" 391 " function inner1(a, b) { return a; }\n" 392 "}", 393 Style); 394 395 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All; 396 verifyFormat("var func = function() { return 1; };", Style); 397 verifyFormat("var func = doSomething(function() { return 1; });", Style); 398 verifyFormat( 399 "var outer = function() { var inner = function() { return 1; } };", 400 Style); 401 verifyFormat("function outer1(a, b) {\n" 402 " function inner1(a, b) { return a; }\n" 403 "}", 404 Style); 405 406 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None; 407 verifyFormat("var func = function() {\n" 408 " return 1;\n" 409 "};", 410 Style); 411 verifyFormat("var func = doSomething(function() {\n" 412 " return 1;\n" 413 "});", 414 Style); 415 verifyFormat("var outer = function() {\n" 416 " var inner = function() {\n" 417 " return 1;\n" 418 " }\n" 419 "};", 420 Style); 421 verifyFormat("function outer1(a, b) {\n" 422 " function inner1(a, b) {\n" 423 " return a;\n" 424 " }\n" 425 "}", 426 Style); 427 } 428 429 TEST_F(FormatTestJS, MultipleFunctionLiterals) { 430 verifyFormat("promise.then(\n" 431 " function success() {\n" 432 " doFoo();\n" 433 " doBar();\n" 434 " },\n" 435 " function error() {\n" 436 " doFoo();\n" 437 " doBaz();\n" 438 " },\n" 439 " []);\n"); 440 verifyFormat("promise.then(\n" 441 " function success() {\n" 442 " doFoo();\n" 443 " doBar();\n" 444 " },\n" 445 " [],\n" 446 " function error() {\n" 447 " doFoo();\n" 448 " doBaz();\n" 449 " });\n"); 450 // FIXME: Here, we should probably break right after the "(" for consistency. 451 verifyFormat("promise.then([],\n" 452 " function success() {\n" 453 " doFoo();\n" 454 " doBar();\n" 455 " },\n" 456 " function error() {\n" 457 " doFoo();\n" 458 " doBaz();\n" 459 " });\n"); 460 461 verifyFormat("getSomeLongPromise()\n" 462 " .then(function(value) { body(); })\n" 463 " .thenCatch(function(error) {\n" 464 " body();\n" 465 " body();\n" 466 " });"); 467 verifyFormat("getSomeLongPromise()\n" 468 " .then(function(value) {\n" 469 " body();\n" 470 " body();\n" 471 " })\n" 472 " .thenCatch(function(error) {\n" 473 " body();\n" 474 " body();\n" 475 " });"); 476 477 verifyFormat("getSomeLongPromise()\n" 478 " .then(function(value) { body(); })\n" 479 " .thenCatch(function(error) { body(); });"); 480 } 481 482 TEST_F(FormatTestJS, ArrowFunctions) { 483 verifyFormat("var x = (a) => {\n" 484 " return a;\n" 485 "};"); 486 verifyFormat("var x = (a) => {\n" 487 " function y() { return 42; }\n" 488 " return a;\n" 489 "};"); 490 verifyFormat("var x = (a: type): {some: type} => {\n" 491 " return a;\n" 492 "};"); 493 verifyFormat("var x = (a) => a;"); 494 verifyFormat("return () => [];"); 495 verifyFormat("var aaaaaaaaaaaaaaaaaaaa = {\n" 496 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa:\n" 497 " (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 498 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) =>\n" 499 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 500 "};"); 501 verifyFormat( 502 "var a = a.aaaaaaa((a: a) => aaaaaaaaaaaaaaaaaaaaa(bbbbbbbbb) &&\n" 503 " aaaaaaaaaaaaaaaaaaaaa(bbbbbbb));"); 504 verifyFormat( 505 "var a = a.aaaaaaa((a: a) => aaaaaaaaaaaaaaaaaaaaa(bbbbbbbbb) ?\n" 506 " aaaaaaaaaaaaaaaaaaaaa(bbbbbbb) :\n" 507 " aaaaaaaaaaaaaaaaaaaaa(bbbbbbb));"); 508 509 // FIXME: This is bad, we should be wrapping before "() => {". 510 verifyFormat("someFunction(() => {\n" 511 " doSomething(); // break\n" 512 "})\n" 513 " .doSomethingElse(\n" 514 " // break\n" 515 " );"); 516 } 517 518 TEST_F(FormatTestJS, ReturnStatements) { 519 verifyFormat("function() {\n" 520 " return [hello, world];\n" 521 "}"); 522 } 523 524 TEST_F(FormatTestJS, AutomaticSemicolonInsertion) { 525 // The following statements must not wrap, as otherwise the program meaning 526 // would change due to automatic semicolon insertion. 527 // See http://www.ecma-international.org/ecma-262/5.1/#sec-7.9.1. 528 verifyFormat("return aaaaa;", getGoogleJSStyleWithColumns(10)); 529 verifyFormat("continue aaaaa;", getGoogleJSStyleWithColumns(10)); 530 verifyFormat("break aaaaa;", getGoogleJSStyleWithColumns(10)); 531 verifyFormat("throw aaaaa;", getGoogleJSStyleWithColumns(10)); 532 verifyFormat("aaaaaaaaa++;", getGoogleJSStyleWithColumns(10)); 533 verifyFormat("aaaaaaaaa--;", getGoogleJSStyleWithColumns(10)); 534 } 535 536 TEST_F(FormatTestJS, ClosureStyleCasts) { 537 verifyFormat("var x = /** @type {foo} */ (bar);"); 538 } 539 540 TEST_F(FormatTestJS, TryCatch) { 541 verifyFormat("try {\n" 542 " f();\n" 543 "} catch (e) {\n" 544 " g();\n" 545 "} finally {\n" 546 " h();\n" 547 "}"); 548 549 // But, of course, "catch" is a perfectly fine function name in JavaScript. 550 verifyFormat("someObject.catch();"); 551 verifyFormat("someObject.new();"); 552 verifyFormat("someObject.delete();"); 553 } 554 555 TEST_F(FormatTestJS, StringLiteralConcatenation) { 556 verifyFormat("var literal = 'hello ' +\n" 557 " 'world';"); 558 } 559 560 TEST_F(FormatTestJS, RegexLiteralClassification) { 561 // Regex literals. 562 verifyFormat("var regex = /abc/;"); 563 verifyFormat("f(/abc/);"); 564 verifyFormat("f(abc, /abc/);"); 565 verifyFormat("some_map[/abc/];"); 566 verifyFormat("var x = a ? /abc/ : /abc/;"); 567 verifyFormat("for (var i = 0; /abc/.test(s[i]); i++) {\n}"); 568 verifyFormat("var x = !/abc/.test(y);"); 569 verifyFormat("var x = a && /abc/.test(y);"); 570 verifyFormat("var x = a || /abc/.test(y);"); 571 verifyFormat("var x = a + /abc/.search(y);"); 572 verifyFormat("var regexs = {/abc/, /abc/};"); 573 verifyFormat("return /abc/;"); 574 575 // Not regex literals. 576 verifyFormat("var a = a / 2 + b / 3;"); 577 } 578 579 TEST_F(FormatTestJS, RegexLiteralSpecialCharacters) { 580 verifyFormat("var regex = /=/;"); 581 verifyFormat("var regex = /a*/;"); 582 verifyFormat("var regex = /a+/;"); 583 verifyFormat("var regex = /a?/;"); 584 verifyFormat("var regex = /.a./;"); 585 verifyFormat("var regex = /a\\*/;"); 586 verifyFormat("var regex = /^a$/;"); 587 verifyFormat("var regex = /\\/a/;"); 588 verifyFormat("var regex = /(?:x)/;"); 589 verifyFormat("var regex = /x(?=y)/;"); 590 verifyFormat("var regex = /x(?!y)/;"); 591 verifyFormat("var regex = /x|y/;"); 592 verifyFormat("var regex = /a{2}/;"); 593 verifyFormat("var regex = /a{1,3}/;"); 594 verifyFormat("var regex = /[abc]/;"); 595 verifyFormat("var regex = /[^abc]/;"); 596 verifyFormat("var regex = /[\\b]/;"); 597 verifyFormat("var regex = /\\b/;"); 598 verifyFormat("var regex = /\\B/;"); 599 verifyFormat("var regex = /\\d/;"); 600 verifyFormat("var regex = /\\D/;"); 601 verifyFormat("var regex = /\\f/;"); 602 verifyFormat("var regex = /\\n/;"); 603 verifyFormat("var regex = /\\r/;"); 604 verifyFormat("var regex = /\\s/;"); 605 verifyFormat("var regex = /\\S/;"); 606 verifyFormat("var regex = /\\t/;"); 607 verifyFormat("var regex = /\\v/;"); 608 verifyFormat("var regex = /\\w/;"); 609 verifyFormat("var regex = /\\W/;"); 610 verifyFormat("var regex = /a(a)\\1/;"); 611 verifyFormat("var regex = /\\0/;"); 612 verifyFormat("var regex = /\\\\/g;"); 613 verifyFormat("var regex = /\\a\\\\/g;"); 614 verifyFormat("var regex = /\a\\//g;"); 615 verifyFormat("var regex = /a\\//;\n" 616 "var x = 0;"); 617 EXPECT_EQ("var regex = /\\/*/;\n" 618 "var x = 0;", 619 format("var regex = /\\/*/;\n" 620 "var x=0;")); 621 } 622 623 TEST_F(FormatTestJS, RegexLiteralModifiers) { 624 verifyFormat("var regex = /abc/g;"); 625 verifyFormat("var regex = /abc/i;"); 626 verifyFormat("var regex = /abc/m;"); 627 verifyFormat("var regex = /abc/y;"); 628 } 629 630 TEST_F(FormatTestJS, RegexLiteralLength) { 631 verifyFormat("var regex = /aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/;", 632 getGoogleJSStyleWithColumns(60)); 633 verifyFormat("var regex =\n" 634 " /aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/;", 635 getGoogleJSStyleWithColumns(60)); 636 verifyFormat("var regex = /\\xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/;", 637 getGoogleJSStyleWithColumns(50)); 638 } 639 640 TEST_F(FormatTestJS, RegexLiteralExamples) { 641 verifyFormat("var regex = search.match(/(?:\?|&)times=([^?&]+)/i);"); 642 } 643 644 TEST_F(FormatTestJS, TypeAnnotations) { 645 verifyFormat("var x: string;"); 646 verifyFormat("function x(): string {\n return 'x';\n}"); 647 verifyFormat("function x(): {x: string} {\n return {x: 'x'};\n}"); 648 verifyFormat("function x(y: string): string {\n return 'x';\n}"); 649 verifyFormat("for (var y: string in x) {\n x();\n}"); 650 verifyFormat("((a: string, b: number): string => a + b);"); 651 verifyFormat("var x: (y: number) => string;"); 652 verifyFormat("var x: P<string, (a: number) => string>;"); 653 verifyFormat("var x = {y: function(): z { return 1; }};"); 654 verifyFormat("var x = {y: function(): {a: number} { return 1; }};"); 655 } 656 657 TEST_F(FormatTestJS, ClassDeclarations) { 658 verifyFormat("class C {\n x: string = 12;\n}"); 659 verifyFormat("class C {\n x(): string => 12;\n}"); 660 verifyFormat("class C {\n ['x' + 2]: string = 12;\n}"); 661 verifyFormat("class C {\n private x: string = 12;\n}"); 662 verifyFormat("class C {\n private static x: string = 12;\n}"); 663 verifyFormat("class C {\n static x(): string { return 'asd'; }\n}"); 664 verifyFormat("class C extends P implements I {}"); 665 verifyFormat("class C extends p.P implements i.I {}"); 666 667 // ':' is not a type declaration here. 668 verifyFormat("class X {\n" 669 " subs = {\n" 670 " 'b': {\n" 671 " 'c': 1,\n" 672 " },\n" 673 " };\n" 674 "}"); 675 } 676 677 TEST_F(FormatTestJS, InterfaceDeclarations) { 678 verifyFormat("interface I {\n" 679 " x: string;\n" 680 "}\n" 681 "var y;"); 682 } 683 684 TEST_F(FormatTestJS, MetadataAnnotations) { 685 verifyFormat("@A\nclass C {\n}"); 686 verifyFormat("@A({arg: 'value'})\nclass C {\n}"); 687 verifyFormat("@A\n@B\nclass C {\n}"); 688 verifyFormat("class C {\n @A x: string;\n}"); 689 verifyFormat("class C {\n" 690 " @A\n" 691 " private x(): string {\n" 692 " return 'y';\n" 693 " }\n" 694 "}"); 695 verifyFormat("class X {}\n" 696 "class Y {}"); 697 } 698 699 TEST_F(FormatTestJS, Modules) { 700 verifyFormat("import SomeThing from 'some/module.js';"); 701 verifyFormat("import {X, Y} from 'some/module.js';"); 702 verifyFormat("import {\n" 703 " VeryLongImportsAreAnnoying,\n" 704 " VeryLongImportsAreAnnoying,\n" 705 " VeryLongImportsAreAnnoying,\n" 706 " VeryLongImportsAreAnnoying\n" 707 "} from 'some/module.js';"); 708 verifyFormat("import {\n" 709 " X,\n" 710 " Y,\n" 711 "} from 'some/module.js';"); 712 verifyFormat("import {\n" 713 " X,\n" 714 " Y,\n" 715 "} from 'some/long/module.js';", 716 getGoogleJSStyleWithColumns(20)); 717 verifyFormat("import {X as myLocalX, Y as myLocalY} from 'some/module.js';"); 718 verifyFormat("import * as lib from 'some/module.js';"); 719 verifyFormat("var x = {import: 1};\nx.import = 2;"); 720 721 verifyFormat("export function fn() {\n" 722 " return 'fn';\n" 723 "}"); 724 verifyFormat("export function A() {}\n" 725 "export default function B() {}\n" 726 "export function C() {}"); 727 verifyFormat("export const x = 12;"); 728 verifyFormat("export default class X {}"); 729 verifyFormat("export {X, Y} from 'some/module.js';"); 730 verifyFormat("export {\n" 731 " X,\n" 732 " Y,\n" 733 "} from 'some/module.js';"); 734 verifyFormat("export class C {\n" 735 " x: number;\n" 736 " y: string;\n" 737 "}"); 738 verifyFormat("export class X { y: number; }"); 739 verifyFormat("export default class X { y: number }"); 740 verifyFormat("export default function() {\n return 1;\n}"); 741 verifyFormat("export var x = 12;"); 742 verifyFormat("class C {}\n" 743 "export function f() {}\n" 744 "var v;"); 745 verifyFormat("export var x: number = 12;"); 746 verifyFormat("export const y = {\n" 747 " a: 1,\n" 748 " b: 2\n" 749 "};"); 750 verifyFormat("export enum Foo {\n" 751 " BAR,\n" 752 " // adsdasd\n" 753 " BAZ\n" 754 "}"); 755 } 756 757 TEST_F(FormatTestJS, TemplateStrings) { 758 // Keeps any whitespace/indentation within the template string. 759 EXPECT_EQ("var x = `hello\n" 760 " ${ name }\n" 761 " !`;", 762 format("var x = `hello\n" 763 " ${ name }\n" 764 " !`;")); 765 766 // FIXME: +1 / -1 offsets are to work around clang-format miscalculating 767 // widths for unknown tokens that are not whitespace (e.g. '`'). Remove when 768 // the code is corrected. 769 770 verifyFormat("var x =\n" 771 " `hello ${world}` >= some();", 772 getGoogleJSStyleWithColumns(34)); // Barely doesn't fit. 773 verifyFormat("var x = `hello ${world}` >= some();", 774 getGoogleJSStyleWithColumns(35 + 1)); // Barely fits. 775 EXPECT_EQ("var x = `hello\n" 776 " ${world}` >=\n" 777 " some();", 778 format("var x =\n" 779 " `hello\n" 780 " ${world}` >= some();", 781 getGoogleJSStyleWithColumns(21))); // Barely doesn't fit. 782 EXPECT_EQ("var x = `hello\n" 783 " ${world}` >= some();", 784 format("var x =\n" 785 " `hello\n" 786 " ${world}` >= some();", 787 getGoogleJSStyleWithColumns(22))); // Barely fits. 788 789 verifyFormat("var x =\n `h`;", getGoogleJSStyleWithColumns(13 - 1)); 790 EXPECT_EQ( 791 "var x =\n `multi\n line`;", 792 format("var x = `multi\n line`;", getGoogleJSStyleWithColumns(14 - 1))); 793 794 // Make sure template strings get a proper ColumnWidth assigned, even if they 795 // are first token in line. 796 verifyFormat( 797 "var a = aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 798 " `aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa`;"); 799 800 // Two template strings. 801 verifyFormat("var x = `hello` == `hello`;"); 802 803 // Comments in template strings. 804 EXPECT_EQ("var x = `//a`;\n" 805 "var y;", 806 format("var x =\n `//a`;\n" 807 "var y ;")); 808 EXPECT_EQ("var x = `/*a`;\n" 809 "var y;", 810 format("var x =\n `/*a`;\n" 811 "var y;")); 812 // Unterminated string literals in a template string. 813 verifyFormat("var x = `'`; // comment with matching quote '\n" 814 "var y;"); 815 verifyFormat("var x = `\"`; // comment with matching quote \"\n" 816 "var y;"); 817 // Backticks in a comment - not a template string. 818 EXPECT_EQ("var x = 1 // `/*a`;\n" 819 " ;", 820 format("var x =\n 1 // `/*a`;\n" 821 " ;")); 822 EXPECT_EQ("/* ` */ var x = 1; /* ` */", 823 format("/* ` */ var x\n= 1; /* ` */")); 824 // Comment spans multiple template strings. 825 EXPECT_EQ("var x = `/*a`;\n" 826 "var y = ` */ `;", 827 format("var x =\n `/*a`;\n" 828 "var y =\n ` */ `;")); 829 // Escaped backtick. 830 EXPECT_EQ("var x = ` \\` a`;\n" 831 "var y;", 832 format("var x = ` \\` a`;\n" 833 "var y;")); 834 } 835 836 TEST_F(FormatTestJS, CastSyntax) { 837 verifyFormat("var x = <type>foo;"); 838 } 839 840 TEST_F(FormatTestJS, TypeArguments) { 841 verifyFormat("class X<Y> {}"); 842 verifyFormat("new X<Y>();"); 843 verifyFormat("foo<Y>(a);"); 844 verifyFormat("var x: X<Y>[];"); 845 verifyFormat("class C extends D<E> implements F<G>, H<I> {}"); 846 verifyFormat("function f(a: List<any> = null) {}"); 847 verifyFormat("function f(): List<any> {}"); 848 } 849 850 TEST_F(FormatTestJS, OptionalTypes) { 851 verifyFormat("function x(a?: b, c?, d?) {}"); 852 verifyFormat("class X {\n" 853 " y?: z;\n" 854 " z?;\n" 855 "}"); 856 verifyFormat("interface X {\n" 857 " y?(): z;\n" 858 "}"); 859 verifyFormat("x ? 1 : 2;"); 860 verifyFormat("constructor({aa}: {\n" 861 " aa?: string,\n" 862 " aaaaaaaa?: string,\n" 863 " aaaaaaaaaaaaaaa?: boolean,\n" 864 " aaaaaa?: List<string>\n" 865 "}) {}"); 866 } 867 868 TEST_F(FormatTestJS, IndexSignature) { 869 verifyFormat("var x: {[k: string]: v};"); 870 } 871 872 } // end namespace tooling 873 } // end namespace clang 874