1 //===- unittest/Format/FormatTestJS.cpp - Formatting unit tests for JS ----===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "FormatTestUtils.h" 10 #include "clang/Format/Format.h" 11 #include "llvm/Support/Debug.h" 12 #include "gtest/gtest.h" 13 14 #define DEBUG_TYPE "format-test" 15 16 namespace clang { 17 namespace format { 18 19 class FormatTestJS : public ::testing::Test { 20 protected: 21 static std::string format(llvm::StringRef Code, unsigned Offset, 22 unsigned Length, const FormatStyle &Style) { 23 LLVM_DEBUG(llvm::errs() << "---\n"); 24 LLVM_DEBUG(llvm::errs() << Code << "\n\n"); 25 std::vector<tooling::Range> Ranges(1, tooling::Range(Offset, Length)); 26 FormattingAttemptStatus Status; 27 tooling::Replacements Replaces = 28 reformat(Style, Code, Ranges, "<stdin>", &Status); 29 EXPECT_TRUE(Status.FormatComplete); 30 auto Result = applyAllReplacements(Code, Replaces); 31 EXPECT_TRUE(static_cast<bool>(Result)); 32 LLVM_DEBUG(llvm::errs() << "\n" << *Result << "\n\n"); 33 return *Result; 34 } 35 36 static std::string format( 37 llvm::StringRef Code, 38 const FormatStyle &Style = getGoogleStyle(FormatStyle::LK_JavaScript)) { 39 return format(Code, 0, Code.size(), Style); 40 } 41 42 static FormatStyle getGoogleJSStyleWithColumns(unsigned ColumnLimit) { 43 FormatStyle Style = getGoogleStyle(FormatStyle::LK_JavaScript); 44 Style.ColumnLimit = ColumnLimit; 45 return Style; 46 } 47 48 static void verifyFormat( 49 llvm::StringRef Code, 50 const FormatStyle &Style = getGoogleStyle(FormatStyle::LK_JavaScript)) { 51 EXPECT_EQ(Code.str(), format(Code, Style)) 52 << "Expected code is not stable"; 53 std::string Result = format(test::messUp(Code), Style); 54 EXPECT_EQ(Code.str(), Result) << "Formatted:\n" << Result; 55 } 56 57 static void verifyFormat( 58 llvm::StringRef Expected, 59 llvm::StringRef Code, 60 const FormatStyle &Style = getGoogleStyle(FormatStyle::LK_JavaScript)) { 61 EXPECT_EQ(Expected.str(), format(Expected, Style)) 62 << "Expected code is not stable"; 63 std::string Result = format(Code, Style); 64 EXPECT_EQ(Expected.str(), Result) << "Formatted:\n" << Result; 65 } 66 }; 67 68 TEST_F(FormatTestJS, BlockComments) { 69 verifyFormat("/* aaaaaaaaaaaaa */ aaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 70 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 71 // Breaks after a single line block comment. 72 EXPECT_EQ("aaaaa = bbbb.ccccccccccccccc(\n" 73 " /** @type_{!cccc.rrrrrrr.MMMMMMMMMMMM.LLLLLLLLLLL.lala} */\n" 74 " mediaMessage);", 75 format("aaaaa = bbbb.ccccccccccccccc(\n" 76 " /** " 77 "@type_{!cccc.rrrrrrr.MMMMMMMMMMMM.LLLLLLLLLLL.lala} */ " 78 "mediaMessage);", 79 getGoogleJSStyleWithColumns(70))); 80 // Breaks after a multiline block comment. 81 EXPECT_EQ( 82 "aaaaa = bbbb.ccccccccccccccc(\n" 83 " /**\n" 84 " * @type_{!cccc.rrrrrrr.MMMMMMMMMMMM.LLLLLLLLLLL.lala}\n" 85 " */\n" 86 " mediaMessage);", 87 format("aaaaa = bbbb.ccccccccccccccc(\n" 88 " /**\n" 89 " * @type_{!cccc.rrrrrrr.MMMMMMMMMMMM.LLLLLLLLLLL.lala}\n" 90 " */ mediaMessage);", 91 getGoogleJSStyleWithColumns(70))); 92 } 93 94 TEST_F(FormatTestJS, JSDocComments) { 95 // Break the first line of a multiline jsdoc comment. 96 EXPECT_EQ("/**\n" 97 " * jsdoc line 1\n" 98 " * jsdoc line 2\n" 99 " */", 100 format("/** jsdoc line 1\n" 101 " * jsdoc line 2\n" 102 " */", 103 getGoogleJSStyleWithColumns(20))); 104 // Both break after '/**' and break the line itself. 105 EXPECT_EQ("/**\n" 106 " * jsdoc line long\n" 107 " * long jsdoc line 2\n" 108 " */", 109 format("/** jsdoc line long long\n" 110 " * jsdoc line 2\n" 111 " */", 112 getGoogleJSStyleWithColumns(20))); 113 // Break a short first line if the ending '*/' is on a newline. 114 EXPECT_EQ("/**\n" 115 " * jsdoc line 1\n" 116 " */", 117 format("/** jsdoc line 1\n" 118 " */", getGoogleJSStyleWithColumns(20))); 119 // Don't break the first line of a short single line jsdoc comment. 120 EXPECT_EQ("/** jsdoc line 1 */", 121 format("/** jsdoc line 1 */", getGoogleJSStyleWithColumns(20))); 122 // Don't break the first line of a single line jsdoc comment if it just fits 123 // the column limit. 124 EXPECT_EQ("/** jsdoc line 12 */", 125 format("/** jsdoc line 12 */", getGoogleJSStyleWithColumns(20))); 126 // Don't break after '/**' and before '*/' if there is no space between 127 // '/**' and the content. 128 EXPECT_EQ( 129 "/*** nonjsdoc long\n" 130 " * line */", 131 format("/*** nonjsdoc long line */", getGoogleJSStyleWithColumns(20))); 132 EXPECT_EQ( 133 "/**strange long long\n" 134 " * line */", 135 format("/**strange long long line */", getGoogleJSStyleWithColumns(20))); 136 // Break the first line of a single line jsdoc comment if it just exceeds the 137 // column limit. 138 EXPECT_EQ("/**\n" 139 " * jsdoc line 123\n" 140 " */", 141 format("/** jsdoc line 123 */", getGoogleJSStyleWithColumns(20))); 142 // Break also if the leading indent of the first line is more than 1 column. 143 EXPECT_EQ("/**\n" 144 " * jsdoc line 123\n" 145 " */", 146 format("/** jsdoc line 123 */", getGoogleJSStyleWithColumns(20))); 147 // Break also if the leading indent of the first line is more than 1 column. 148 EXPECT_EQ("/**\n" 149 " * jsdoc line 123\n" 150 " */", 151 format("/** jsdoc line 123 */", getGoogleJSStyleWithColumns(20))); 152 // Break after the content of the last line. 153 EXPECT_EQ("/**\n" 154 " * line 1\n" 155 " * line 2\n" 156 " */", 157 format("/**\n" 158 " * line 1\n" 159 " * line 2 */", 160 getGoogleJSStyleWithColumns(20))); 161 // Break both the content and after the content of the last line. 162 EXPECT_EQ("/**\n" 163 " * line 1\n" 164 " * line long long\n" 165 " * long\n" 166 " */", 167 format("/**\n" 168 " * line 1\n" 169 " * line long long long */", 170 getGoogleJSStyleWithColumns(20))); 171 172 // The comment block gets indented. 173 EXPECT_EQ("function f() {\n" 174 " /**\n" 175 " * comment about\n" 176 " * x\n" 177 " */\n" 178 " var x = 1;\n" 179 "}", 180 format("function f() {\n" 181 "/** comment about x */\n" 182 "var x = 1;\n" 183 "}", 184 getGoogleJSStyleWithColumns(20))); 185 186 // Don't break the first line of a single line short jsdoc comment pragma. 187 EXPECT_EQ("/** @returns j */", 188 format("/** @returns j */", 189 getGoogleJSStyleWithColumns(20))); 190 191 // Break a single line long jsdoc comment pragma. 192 EXPECT_EQ("/**\n" 193 " * @returns {string} jsdoc line 12\n" 194 " */", 195 format("/** @returns {string} jsdoc line 12 */", 196 getGoogleJSStyleWithColumns(20))); 197 EXPECT_EQ("/**\n" 198 " * @returns {string}\n" 199 " * jsdoc line 12\n" 200 " */", 201 format("/** @returns {string} jsdoc line 12 */", 202 getGoogleJSStyleWithColumns(25))); 203 204 EXPECT_EQ("/**\n" 205 " * @returns {string} jsdoc line 12\n" 206 " */", 207 format("/** @returns {string} jsdoc line 12 */", 208 getGoogleJSStyleWithColumns(20))); 209 210 // FIXME: this overcounts the */ as a continuation of the 12 when breaking. 211 // Related to the FIXME in BreakableBlockComment::getRangeLength. 212 EXPECT_EQ("/**\n" 213 " * @returns {string}\n" 214 " * jsdoc line line\n" 215 " * 12\n" 216 " */", 217 format("/** @returns {string} jsdoc line line 12*/", 218 getGoogleJSStyleWithColumns(25))); 219 220 // Fix a multiline jsdoc comment ending in a comment pragma. 221 EXPECT_EQ("/**\n" 222 " * line 1\n" 223 " * line 2\n" 224 " * @returns {string}\n" 225 " * jsdoc line 12\n" 226 " */", 227 format("/** line 1\n" 228 " * line 2\n" 229 " * @returns {string} jsdoc line 12 */", 230 getGoogleJSStyleWithColumns(20))); 231 232 EXPECT_EQ("/**\n" 233 " * line 1\n" 234 " * line 2\n" 235 " *\n" 236 " * @returns j\n" 237 " */", 238 format("/** line 1\n" 239 " * line 2\n" 240 " *\n" 241 " * @returns j */", 242 getGoogleJSStyleWithColumns(20))); 243 } 244 245 TEST_F(FormatTestJS, UnderstandsJavaScriptOperators) { 246 verifyFormat("a == = b;"); 247 verifyFormat("a != = b;"); 248 249 verifyFormat("a === b;"); 250 verifyFormat("aaaaaaa ===\n b;", getGoogleJSStyleWithColumns(10)); 251 verifyFormat("a !== b;"); 252 verifyFormat("aaaaaaa !==\n b;", getGoogleJSStyleWithColumns(10)); 253 verifyFormat("if (a + b + c +\n" 254 " d !==\n" 255 " e + f + g)\n" 256 " q();", 257 getGoogleJSStyleWithColumns(20)); 258 259 verifyFormat("a >> >= b;"); 260 261 verifyFormat("a >>> b;"); 262 verifyFormat("aaaaaaa >>>\n b;", getGoogleJSStyleWithColumns(10)); 263 verifyFormat("a >>>= b;"); 264 verifyFormat("aaaaaaa >>>=\n b;", getGoogleJSStyleWithColumns(10)); 265 verifyFormat("if (a + b + c +\n" 266 " d >>>\n" 267 " e + f + g)\n" 268 " q();", 269 getGoogleJSStyleWithColumns(20)); 270 verifyFormat("var x = aaaaaaaaaa ?\n" 271 " bbbbbb :\n" 272 " ccc;", 273 getGoogleJSStyleWithColumns(20)); 274 275 verifyFormat("var b = a.map((x) => x + 1);"); 276 verifyFormat("return ('aaa') in bbbb;"); 277 verifyFormat("var x = aaaaaaaaaaaaaaaaaaaaaaaaa() in\n" 278 " aaaa.aaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;"); 279 FormatStyle Style = getGoogleJSStyleWithColumns(80); 280 Style.AlignOperands = true; 281 verifyFormat("var x = aaaaaaaaaaaaaaaaaaaaaaaaa() in\n" 282 " aaaa.aaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;", 283 Style); 284 Style.BreakBeforeBinaryOperators = FormatStyle::BOS_All; 285 verifyFormat("var x = aaaaaaaaaaaaaaaaaaaaaaaaa()\n" 286 " in aaaa.aaaaaa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa;", 287 Style); 288 289 // ES6 spread operator. 290 verifyFormat("someFunction(...a);"); 291 verifyFormat("var x = [1, ...a, 2];"); 292 } 293 294 TEST_F(FormatTestJS, UnderstandsAmpAmp) { 295 verifyFormat("e && e.SomeFunction();"); 296 } 297 298 TEST_F(FormatTestJS, LiteralOperatorsCanBeKeywords) { 299 verifyFormat("not.and.or.not_eq = 1;"); 300 } 301 302 TEST_F(FormatTestJS, ReservedWords) { 303 // JavaScript reserved words (aka keywords) are only illegal when used as 304 // Identifiers, but are legal as IdentifierNames. 305 verifyFormat("x.class.struct = 1;"); 306 verifyFormat("x.case = 1;"); 307 verifyFormat("x.interface = 1;"); 308 verifyFormat("x.for = 1;"); 309 verifyFormat("x.of();"); 310 verifyFormat("of(null);"); 311 verifyFormat("return of(null);"); 312 verifyFormat("import {of} from 'x';"); 313 verifyFormat("x.in();"); 314 verifyFormat("x.let();"); 315 verifyFormat("x.var();"); 316 verifyFormat("x.for();"); 317 verifyFormat("x.as();"); 318 verifyFormat("x.instanceof();"); 319 verifyFormat("x.switch();"); 320 verifyFormat("x.case();"); 321 verifyFormat("x.delete();"); 322 verifyFormat("x.throw();"); 323 verifyFormat("x.throws();"); 324 verifyFormat("x.if();"); 325 verifyFormat("x = {\n" 326 " a: 12,\n" 327 " interface: 1,\n" 328 " switch: 1,\n" 329 "};"); 330 verifyFormat("var struct = 2;"); 331 verifyFormat("var union = 2;"); 332 verifyFormat("var interface = 2;"); 333 verifyFormat("interface = 2;"); 334 verifyFormat("x = interface instanceof y;"); 335 verifyFormat("interface Test {\n" 336 " x: string;\n" 337 " switch: string;\n" 338 " case: string;\n" 339 " default: string;\n" 340 "}\n"); 341 verifyFormat("const Axis = {\n" 342 " for: 'for',\n" 343 " x: 'x'\n" 344 "};", 345 "const Axis = {for: 'for', x: 'x'};"); 346 } 347 348 TEST_F(FormatTestJS, ReservedWordsMethods) { 349 verifyFormat( 350 "class X {\n" 351 " delete() {\n" 352 " x();\n" 353 " }\n" 354 " interface() {\n" 355 " x();\n" 356 " }\n" 357 " let() {\n" 358 " x();\n" 359 " }\n" 360 "}\n"); 361 verifyFormat("class KeywordNamedMethods {\n" 362 " do() {\n" 363 " }\n" 364 " for() {\n" 365 " }\n" 366 " while() {\n" 367 " }\n" 368 " if() {\n" 369 " }\n" 370 " else() {\n" 371 " }\n" 372 " try() {\n" 373 " }\n" 374 " catch() {\n" 375 " }\n" 376 "}\n"); 377 } 378 379 TEST_F(FormatTestJS, ReservedWordsParenthesized) { 380 // All of these are statements using the keyword, not function calls. 381 verifyFormat("throw (x + y);\n" 382 "await (await x).y;\n" 383 "typeof (x) === 'string';\n" 384 "void (0);\n" 385 "delete (x.y);\n" 386 "return (x);\n"); 387 } 388 389 TEST_F(FormatTestJS, CppKeywords) { 390 // Make sure we don't mess stuff up because of C++ keywords. 391 verifyFormat("return operator && (aa);"); 392 // .. or QT ones. 393 verifyFormat("slots: Slot[];"); 394 } 395 396 TEST_F(FormatTestJS, ES6DestructuringAssignment) { 397 verifyFormat("var [a, b, c] = [1, 2, 3];"); 398 verifyFormat("const [a, b, c] = [1, 2, 3];"); 399 verifyFormat("let [a, b, c] = [1, 2, 3];"); 400 verifyFormat("var {a, b} = {a: 1, b: 2};"); 401 verifyFormat("let {a, b} = {a: 1, b: 2};"); 402 } 403 404 TEST_F(FormatTestJS, ContainerLiterals) { 405 verifyFormat("var x = {\n" 406 " y: function(a) {\n" 407 " return a;\n" 408 " }\n" 409 "};"); 410 verifyFormat("return {\n" 411 " link: function() {\n" 412 " f(); //\n" 413 " }\n" 414 "};"); 415 verifyFormat("return {\n" 416 " a: a,\n" 417 " link: function() {\n" 418 " f(); //\n" 419 " }\n" 420 "};"); 421 verifyFormat("return {\n" 422 " a: a,\n" 423 " link: function() {\n" 424 " f(); //\n" 425 " },\n" 426 " link: function() {\n" 427 " f(); //\n" 428 " }\n" 429 "};"); 430 verifyFormat("var stuff = {\n" 431 " // comment for update\n" 432 " update: false,\n" 433 " // comment for modules\n" 434 " modules: false,\n" 435 " // comment for tasks\n" 436 " tasks: false\n" 437 "};"); 438 verifyFormat("return {\n" 439 " 'finish':\n" 440 " //\n" 441 " a\n" 442 "};"); 443 verifyFormat("var obj = {\n" 444 " fooooooooo: function(x) {\n" 445 " return x.zIsTooLongForOneLineWithTheDeclarationLine();\n" 446 " }\n" 447 "};"); 448 // Simple object literal, as opposed to enum style below. 449 verifyFormat("var obj = {a: 123};"); 450 // Enum style top level assignment. 451 verifyFormat("X = {\n a: 123\n};"); 452 verifyFormat("X.Y = {\n a: 123\n};"); 453 // But only on the top level, otherwise its a plain object literal assignment. 454 verifyFormat("function x() {\n" 455 " y = {z: 1};\n" 456 "}"); 457 verifyFormat("x = foo && {a: 123};"); 458 459 // Arrow functions in object literals. 460 verifyFormat("var x = {\n" 461 " y: (a) => {\n" 462 " return a;\n" 463 " }\n" 464 "};"); 465 verifyFormat("var x = {y: (a) => a};"); 466 467 // Methods in object literals. 468 verifyFormat("var x = {\n" 469 " y(a: string): number {\n" 470 " return a;\n" 471 " }\n" 472 "};"); 473 verifyFormat("var x = {\n" 474 " y(a: string) {\n" 475 " return a;\n" 476 " }\n" 477 "};"); 478 479 // Computed keys. 480 verifyFormat("var x = {[a]: 1, b: 2, [c]: 3};"); 481 verifyFormat("var x = {\n" 482 " [a]: 1,\n" 483 " b: 2,\n" 484 " [c]: 3,\n" 485 "};"); 486 487 // Object literals can leave out labels. 488 verifyFormat("f({a}, () => {\n" 489 " g(); //\n" 490 "});"); 491 492 // Keys can be quoted. 493 verifyFormat("var x = {\n" 494 " a: a,\n" 495 " b: b,\n" 496 " 'c': c,\n" 497 "};"); 498 499 // Dict literals can skip the label names. 500 verifyFormat("var x = {\n" 501 " aaa,\n" 502 " aaa,\n" 503 " aaa,\n" 504 "};"); 505 verifyFormat("return {\n" 506 " a,\n" 507 " b: 'b',\n" 508 " c,\n" 509 "};"); 510 } 511 512 TEST_F(FormatTestJS, MethodsInObjectLiterals) { 513 verifyFormat("var o = {\n" 514 " value: 'test',\n" 515 " get value() { // getter\n" 516 " return this.value;\n" 517 " }\n" 518 "};"); 519 verifyFormat("var o = {\n" 520 " value: 'test',\n" 521 " set value(val) { // setter\n" 522 " this.value = val;\n" 523 " }\n" 524 "};"); 525 verifyFormat("var o = {\n" 526 " value: 'test',\n" 527 " someMethod(val) { // method\n" 528 " doSomething(this.value + val);\n" 529 " }\n" 530 "};"); 531 verifyFormat("var o = {\n" 532 " someMethod(val) { // method\n" 533 " doSomething(this.value + val);\n" 534 " },\n" 535 " someOtherMethod(val) { // method\n" 536 " doSomething(this.value + val);\n" 537 " }\n" 538 "};"); 539 } 540 541 TEST_F(FormatTestJS, GettersSettersVisibilityKeywords) { 542 // Don't break after "protected" 543 verifyFormat("class X {\n" 544 " protected get getter():\n" 545 " number {\n" 546 " return 1;\n" 547 " }\n" 548 "}", 549 getGoogleJSStyleWithColumns(12)); 550 // Don't break after "get" 551 verifyFormat("class X {\n" 552 " protected get someReallyLongGetterName():\n" 553 " number {\n" 554 " return 1;\n" 555 " }\n" 556 "}", 557 getGoogleJSStyleWithColumns(40)); 558 } 559 560 TEST_F(FormatTestJS, SpacesInContainerLiterals) { 561 verifyFormat("var arr = [1, 2, 3];"); 562 verifyFormat("f({a: 1, b: 2, c: 3});"); 563 564 verifyFormat("var object_literal_with_long_name = {\n" 565 " a: 'aaaaaaaaaaaaaaaaaa',\n" 566 " b: 'bbbbbbbbbbbbbbbbbb'\n" 567 "};"); 568 569 verifyFormat("f({a: 1, b: 2, c: 3});", 570 getChromiumStyle(FormatStyle::LK_JavaScript)); 571 verifyFormat("f({'a': [{}]});"); 572 } 573 574 TEST_F(FormatTestJS, SingleQuotedStrings) { 575 verifyFormat("this.function('', true);"); 576 } 577 578 TEST_F(FormatTestJS, GoogScopes) { 579 verifyFormat("goog.scope(function() {\n" 580 "var x = a.b;\n" 581 "var y = c.d;\n" 582 "}); // goog.scope"); 583 verifyFormat("goog.scope(function() {\n" 584 "// test\n" 585 "var x = 0;\n" 586 "// test\n" 587 "});"); 588 } 589 590 TEST_F(FormatTestJS, IIFEs) { 591 // Internal calling parens; no semi. 592 verifyFormat("(function() {\n" 593 "var a = 1;\n" 594 "}())"); 595 // External calling parens; no semi. 596 verifyFormat("(function() {\n" 597 "var b = 2;\n" 598 "})()"); 599 // Internal calling parens; with semi. 600 verifyFormat("(function() {\n" 601 "var c = 3;\n" 602 "}());"); 603 // External calling parens; with semi. 604 verifyFormat("(function() {\n" 605 "var d = 4;\n" 606 "})();"); 607 } 608 609 TEST_F(FormatTestJS, GoogModules) { 610 verifyFormat("goog.module('this.is.really.absurdly.long');", 611 getGoogleJSStyleWithColumns(40)); 612 verifyFormat("goog.require('this.is.really.absurdly.long');", 613 getGoogleJSStyleWithColumns(40)); 614 verifyFormat("goog.provide('this.is.really.absurdly.long');", 615 getGoogleJSStyleWithColumns(40)); 616 verifyFormat("var long = goog.require('this.is.really.absurdly.long');", 617 getGoogleJSStyleWithColumns(40)); 618 verifyFormat("const X = goog.requireType('this.is.really.absurdly.long');", 619 getGoogleJSStyleWithColumns(40)); 620 verifyFormat("goog.forwardDeclare('this.is.really.absurdly.long');", 621 getGoogleJSStyleWithColumns(40)); 622 623 // These should be wrapped normally. 624 verifyFormat( 625 "var MyLongClassName =\n" 626 " goog.module.get('my.long.module.name.followedBy.MyLongClassName');"); 627 verifyFormat("function a() {\n" 628 " goog.setTestOnly();\n" 629 "}\n", 630 "function a() {\n" 631 "goog.setTestOnly();\n" 632 "}\n"); 633 } 634 635 TEST_F(FormatTestJS, FormatsNamespaces) { 636 verifyFormat("namespace Foo {\n" 637 " export let x = 1;\n" 638 "}\n"); 639 verifyFormat("declare namespace Foo {\n" 640 " export let x: number;\n" 641 "}\n"); 642 } 643 644 TEST_F(FormatTestJS, NamespacesMayNotWrap) { 645 verifyFormat("declare namespace foobarbaz {\n" 646 "}\n", getGoogleJSStyleWithColumns(18)); 647 verifyFormat("declare module foobarbaz {\n" 648 "}\n", getGoogleJSStyleWithColumns(15)); 649 verifyFormat("namespace foobarbaz {\n" 650 "}\n", getGoogleJSStyleWithColumns(10)); 651 verifyFormat("module foobarbaz {\n" 652 "}\n", getGoogleJSStyleWithColumns(7)); 653 } 654 655 TEST_F(FormatTestJS, AmbientDeclarations) { 656 FormatStyle NineCols = getGoogleJSStyleWithColumns(9); 657 verifyFormat( 658 "declare class\n" 659 " X {}", 660 NineCols); 661 verifyFormat( 662 "declare function\n" 663 "x();", // TODO(martinprobst): should ideally be indented. 664 NineCols); 665 verifyFormat("declare function foo();\n" 666 "let x = 1;\n"); 667 verifyFormat("declare function foo(): string;\n" 668 "let x = 1;\n"); 669 verifyFormat("declare function foo(): {x: number};\n" 670 "let x = 1;\n"); 671 verifyFormat("declare class X {}\n" 672 "let x = 1;\n"); 673 verifyFormat("declare interface Y {}\n" 674 "let x = 1;\n"); 675 verifyFormat( 676 "declare enum X {\n" 677 "}", 678 NineCols); 679 verifyFormat( 680 "declare let\n" 681 " x: number;", 682 NineCols); 683 } 684 685 TEST_F(FormatTestJS, FormatsFreestandingFunctions) { 686 verifyFormat("function outer1(a, b) {\n" 687 " function inner1(a, b) {\n" 688 " return a;\n" 689 " }\n" 690 " inner1(a, b);\n" 691 "}\n" 692 "function outer2(a, b) {\n" 693 " function inner2(a, b) {\n" 694 " return a;\n" 695 " }\n" 696 " inner2(a, b);\n" 697 "}"); 698 verifyFormat("function f() {}"); 699 verifyFormat("function aFunction() {}\n" 700 "(function f() {\n" 701 " var x = 1;\n" 702 "}());\n"); 703 verifyFormat("function aFunction() {}\n" 704 "{\n" 705 " let x = 1;\n" 706 " console.log(x);\n" 707 "}\n"); 708 } 709 710 TEST_F(FormatTestJS, GeneratorFunctions) { 711 verifyFormat("function* f() {\n" 712 " let x = 1;\n" 713 " yield x;\n" 714 " yield* something();\n" 715 " yield [1, 2];\n" 716 " yield {a: 1};\n" 717 "}"); 718 verifyFormat("function*\n" 719 " f() {\n" 720 "}", 721 getGoogleJSStyleWithColumns(8)); 722 verifyFormat("export function* f() {\n" 723 " yield 1;\n" 724 "}\n"); 725 verifyFormat("class X {\n" 726 " * generatorMethod() {\n" 727 " yield x;\n" 728 " }\n" 729 "}"); 730 verifyFormat("var x = {\n" 731 " a: function*() {\n" 732 " //\n" 733 " }\n" 734 "}\n"); 735 } 736 737 TEST_F(FormatTestJS, AsyncFunctions) { 738 verifyFormat("async function f() {\n" 739 " let x = 1;\n" 740 " return fetch(x);\n" 741 "}"); 742 verifyFormat("async function f() {\n" 743 " return 1;\n" 744 "}\n" 745 "\n" 746 "function a() {\n" 747 " return 1;\n" 748 "}\n", 749 " async function f() {\n" 750 " return 1;\n" 751 "}\n" 752 "\n" 753 " function a() {\n" 754 " return 1;\n" 755 "} \n"); 756 // clang-format must not insert breaks between async and function, otherwise 757 // automatic semicolon insertion may trigger (in particular in a class body). 758 verifyFormat("async function\n" 759 "hello(\n" 760 " myparamnameiswaytooloooong) {\n" 761 "}", 762 "async function hello(myparamnameiswaytooloooong) {}", 763 getGoogleJSStyleWithColumns(10)); 764 verifyFormat("class C {\n" 765 " async hello(\n" 766 " myparamnameiswaytooloooong) {\n" 767 " }\n" 768 "}", 769 "class C {\n" 770 " async hello(myparamnameiswaytooloooong) {} }", 771 getGoogleJSStyleWithColumns(10)); 772 verifyFormat("async function* f() {\n" 773 " yield fetch(x);\n" 774 "}"); 775 verifyFormat("export async function f() {\n" 776 " return fetch(x);\n" 777 "}"); 778 verifyFormat("let x = async () => f();"); 779 verifyFormat("let x = async function() {\n" 780 " f();\n" 781 "};"); 782 verifyFormat("let x = async();"); 783 verifyFormat("class X {\n" 784 " async asyncMethod() {\n" 785 " return fetch(1);\n" 786 " }\n" 787 "}"); 788 verifyFormat("function initialize() {\n" 789 " // Comment.\n" 790 " return async.then();\n" 791 "}\n"); 792 verifyFormat("for await (const x of y) {\n" 793 " console.log(x);\n" 794 "}\n"); 795 verifyFormat("function asyncLoop() {\n" 796 " for await (const x of y) {\n" 797 " console.log(x);\n" 798 " }\n" 799 "}\n"); 800 } 801 802 TEST_F(FormatTestJS, FunctionParametersTrailingComma) { 803 verifyFormat("function trailingComma(\n" 804 " p1,\n" 805 " p2,\n" 806 " p3,\n" 807 ") {\n" 808 " a; //\n" 809 "}\n", 810 "function trailingComma(p1, p2, p3,) {\n" 811 " a; //\n" 812 "}\n"); 813 verifyFormat("trailingComma(\n" 814 " p1,\n" 815 " p2,\n" 816 " p3,\n" 817 ");\n", 818 "trailingComma(p1, p2, p3,);\n"); 819 verifyFormat("trailingComma(\n" 820 " p1 // hello\n" 821 ");\n", 822 "trailingComma(p1 // hello\n" 823 ");\n"); 824 } 825 826 TEST_F(FormatTestJS, ArrayLiterals) { 827 verifyFormat("var aaaaa: List<SomeThing> =\n" 828 " [new SomeThingAAAAAAAAAAAA(), new SomeThingBBBBBBBBB()];"); 829 verifyFormat("return [\n" 830 " aaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 831 " ccccccccccccccccccccccccccc\n" 832 "];"); 833 verifyFormat("return [\n" 834 " aaaa().bbbbbbbb('A'),\n" 835 " aaaa().bbbbbbbb('B'),\n" 836 " aaaa().bbbbbbbb('C'),\n" 837 "];"); 838 verifyFormat("var someVariable = SomeFunction([\n" 839 " aaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 840 " ccccccccccccccccccccccccccc\n" 841 "]);"); 842 verifyFormat("var someVariable = SomeFunction([\n" 843 " [aaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbb],\n" 844 "]);", 845 getGoogleJSStyleWithColumns(51)); 846 verifyFormat("var someVariable = SomeFunction(aaaa, [\n" 847 " aaaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 848 " ccccccccccccccccccccccccccc\n" 849 "]);"); 850 verifyFormat("var someVariable = SomeFunction(\n" 851 " aaaa,\n" 852 " [\n" 853 " aaaaaaaaaaaaaaaaaaaaaaaaaa, bbbbbbbbbbbbbbbbbbbbbbbbbb,\n" 854 " cccccccccccccccccccccccccc\n" 855 " ],\n" 856 " aaaa);"); 857 verifyFormat("var aaaa = aaaaa || // wrap\n" 858 " [];"); 859 860 verifyFormat("someFunction([], {a: a});"); 861 862 verifyFormat("var string = [\n" 863 " 'aaaaaa',\n" 864 " 'bbbbbb',\n" 865 "].join('+');"); 866 } 867 868 TEST_F(FormatTestJS, ColumnLayoutForArrayLiterals) { 869 verifyFormat("var array = [\n" 870 " a, a, a, a, a, a, a, a, a, a, a, a, a, a, a,\n" 871 " a, a, a, a, a, a, a, a, a, a, a, a, a, a, a,\n" 872 "];"); 873 verifyFormat("var array = someFunction([\n" 874 " a, a, a, a, a, a, a, a, a, a, a, a, a, a, a,\n" 875 " a, a, a, a, a, a, a, a, a, a, a, a, a, a, a,\n" 876 "]);"); 877 } 878 879 TEST_F(FormatTestJS, FunctionLiterals) { 880 FormatStyle Style = getGoogleStyle(FormatStyle::LK_JavaScript); 881 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline; 882 verifyFormat("doFoo(function() {});"); 883 verifyFormat("doFoo(function() { return 1; });", Style); 884 verifyFormat("var func = function() {\n" 885 " return 1;\n" 886 "};"); 887 verifyFormat("var func = //\n" 888 " function() {\n" 889 " return 1;\n" 890 "};"); 891 verifyFormat("return {\n" 892 " body: {\n" 893 " setAttribute: function(key, val) { this[key] = val; },\n" 894 " getAttribute: function(key) { return this[key]; },\n" 895 " style: {direction: ''}\n" 896 " }\n" 897 "};", 898 Style); 899 verifyFormat("abc = xyz ? function() {\n" 900 " return 1;\n" 901 "} : function() {\n" 902 " return -1;\n" 903 "};"); 904 905 verifyFormat("var closure = goog.bind(\n" 906 " function() { // comment\n" 907 " foo();\n" 908 " bar();\n" 909 " },\n" 910 " this, arg1IsReallyLongAndNeedsLineBreaks,\n" 911 " arg3IsReallyLongAndNeedsLineBreaks);"); 912 verifyFormat("var closure = goog.bind(function() { // comment\n" 913 " foo();\n" 914 " bar();\n" 915 "}, this);"); 916 verifyFormat("return {\n" 917 " a: 'E',\n" 918 " b: function() {\n" 919 " return function() {\n" 920 " f(); //\n" 921 " };\n" 922 " }\n" 923 "};"); 924 verifyFormat("{\n" 925 " var someVariable = function(x) {\n" 926 " return x.zIsTooLongForOneLineWithTheDeclarationLine();\n" 927 " };\n" 928 "}"); 929 verifyFormat("someLooooooooongFunction(\n" 930 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 931 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 932 " function(aaaaaaaaaaaaaaaaaaaaaaaaaaaaa) {\n" 933 " // code\n" 934 " });"); 935 936 verifyFormat("return {\n" 937 " a: function SomeFunction() {\n" 938 " // ...\n" 939 " return 1;\n" 940 " }\n" 941 "};"); 942 verifyFormat("this.someObject.doSomething(aaaaaaaaaaaaaaaaaaaaaaaaaa)\n" 943 " .then(goog.bind(function(aaaaaaaaaaa) {\n" 944 " someFunction();\n" 945 " someFunction();\n" 946 " }, this), aaaaaaaaaaaaaaaaa);"); 947 948 verifyFormat("someFunction(goog.bind(function() {\n" 949 " doSomething();\n" 950 " doSomething();\n" 951 "}, this), goog.bind(function() {\n" 952 " doSomething();\n" 953 " doSomething();\n" 954 "}, this));"); 955 956 verifyFormat("SomeFunction(function() {\n" 957 " foo();\n" 958 " bar();\n" 959 "}.bind(this));"); 960 961 verifyFormat("SomeFunction((function() {\n" 962 " foo();\n" 963 " bar();\n" 964 " }).bind(this));"); 965 966 // FIXME: This is bad, we should be wrapping before "function() {". 967 verifyFormat("someFunction(function() {\n" 968 " doSomething(); // break\n" 969 "})\n" 970 " .doSomethingElse(\n" 971 " // break\n" 972 " );"); 973 974 Style.ColumnLimit = 33; 975 verifyFormat("f({a: function() { return 1; }});", Style); 976 Style.ColumnLimit = 32; 977 verifyFormat("f({\n" 978 " a: function() { return 1; }\n" 979 "});", 980 Style); 981 982 } 983 984 TEST_F(FormatTestJS, DontWrapEmptyLiterals) { 985 verifyFormat("(aaaaaaaaaaaaaaaaaaaaa.getData as jasmine.Spy)\n" 986 " .and.returnValue(Observable.of([]));"); 987 verifyFormat("(aaaaaaaaaaaaaaaaaaaaa.getData as jasmine.Spy)\n" 988 " .and.returnValue(Observable.of({}));"); 989 verifyFormat("(aaaaaaaaaaaaaaaaaaaaa.getData as jasmine.Spy)\n" 990 " .and.returnValue(Observable.of(()));"); 991 } 992 993 TEST_F(FormatTestJS, InliningFunctionLiterals) { 994 FormatStyle Style = getGoogleStyle(FormatStyle::LK_JavaScript); 995 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Inline; 996 verifyFormat("var func = function() {\n" 997 " return 1;\n" 998 "};", 999 Style); 1000 verifyFormat("var func = doSomething(function() { return 1; });", Style); 1001 verifyFormat("var outer = function() {\n" 1002 " var inner = function() { return 1; }\n" 1003 "};", 1004 Style); 1005 verifyFormat("function outer1(a, b) {\n" 1006 " function inner1(a, b) { return a; }\n" 1007 "}", 1008 Style); 1009 1010 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All; 1011 verifyFormat("var func = function() { return 1; };", Style); 1012 verifyFormat("var func = doSomething(function() { return 1; });", Style); 1013 verifyFormat( 1014 "var outer = function() { var inner = function() { return 1; } };", 1015 Style); 1016 verifyFormat("function outer1(a, b) {\n" 1017 " function inner1(a, b) { return a; }\n" 1018 "}", 1019 Style); 1020 1021 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_None; 1022 verifyFormat("var func = function() {\n" 1023 " return 1;\n" 1024 "};", 1025 Style); 1026 verifyFormat("var func = doSomething(function() {\n" 1027 " return 1;\n" 1028 "});", 1029 Style); 1030 verifyFormat("var outer = function() {\n" 1031 " var inner = function() {\n" 1032 " return 1;\n" 1033 " }\n" 1034 "};", 1035 Style); 1036 verifyFormat("function outer1(a, b) {\n" 1037 " function inner1(a, b) {\n" 1038 " return a;\n" 1039 " }\n" 1040 "}", 1041 Style); 1042 1043 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_Empty; 1044 verifyFormat("var func = function() {\n" 1045 " return 1;\n" 1046 "};", 1047 Style); 1048 } 1049 1050 TEST_F(FormatTestJS, MultipleFunctionLiterals) { 1051 FormatStyle Style = getGoogleStyle(FormatStyle::LK_JavaScript); 1052 Style.AllowShortFunctionsOnASingleLine = FormatStyle::SFS_All; 1053 verifyFormat("promise.then(\n" 1054 " function success() {\n" 1055 " doFoo();\n" 1056 " doBar();\n" 1057 " },\n" 1058 " function error() {\n" 1059 " doFoo();\n" 1060 " doBaz();\n" 1061 " },\n" 1062 " []);\n"); 1063 verifyFormat("promise.then(\n" 1064 " function success() {\n" 1065 " doFoo();\n" 1066 " doBar();\n" 1067 " },\n" 1068 " [],\n" 1069 " function error() {\n" 1070 " doFoo();\n" 1071 " doBaz();\n" 1072 " });\n"); 1073 verifyFormat("promise.then(\n" 1074 " [],\n" 1075 " function success() {\n" 1076 " doFoo();\n" 1077 " doBar();\n" 1078 " },\n" 1079 " function error() {\n" 1080 " doFoo();\n" 1081 " doBaz();\n" 1082 " });\n"); 1083 1084 verifyFormat("getSomeLongPromise()\n" 1085 " .then(function(value) { body(); })\n" 1086 " .thenCatch(function(error) {\n" 1087 " body();\n" 1088 " body();\n" 1089 " });", 1090 Style); 1091 verifyFormat("getSomeLongPromise()\n" 1092 " .then(function(value) {\n" 1093 " body();\n" 1094 " body();\n" 1095 " })\n" 1096 " .thenCatch(function(error) {\n" 1097 " body();\n" 1098 " body();\n" 1099 " });"); 1100 1101 verifyFormat("getSomeLongPromise()\n" 1102 " .then(function(value) { body(); })\n" 1103 " .thenCatch(function(error) { body(); });", 1104 Style); 1105 1106 verifyFormat("return [aaaaaaaaaaaaaaaaaaaaaa]\n" 1107 " .aaaaaaa(function() {\n" 1108 " //\n" 1109 " })\n" 1110 " .bbbbbb();"); 1111 } 1112 1113 TEST_F(FormatTestJS, ArrowFunctions) { 1114 verifyFormat("var x = (a) => {\n" 1115 " return a;\n" 1116 "};"); 1117 verifyFormat("var x = (a) => {\n" 1118 " function y() {\n" 1119 " return 42;\n" 1120 " }\n" 1121 " return a;\n" 1122 "};"); 1123 verifyFormat("var x = (a: type): {some: type} => {\n" 1124 " return a;\n" 1125 "};"); 1126 verifyFormat("var x = (a) => a;"); 1127 verifyFormat("return () => [];"); 1128 verifyFormat("var aaaaaaaaaaaaaaaaaaaa = {\n" 1129 " aaaaaaaaaaaaaaaaaaaaaaaaaaaa:\n" 1130 " (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 1131 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa) =>\n" 1132 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 1133 "};"); 1134 verifyFormat("var a = a.aaaaaaa(\n" 1135 " (a: a) => aaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbbbb) &&\n" 1136 " aaaaaaaaaaaaaaaaaaaaaaaaa(bbbbbbb));"); 1137 verifyFormat("var a = a.aaaaaaa(\n" 1138 " (a: a) => aaaaaaaaaaaaaaaaaaaaa(bbbbbbbbb) ?\n" 1139 " aaaaaaaaaaaaaaaaaaaaa(bbbbbbb) :\n" 1140 " aaaaaaaaaaaaaaaaaaaaa(bbbbbbb));"); 1141 1142 // FIXME: This is bad, we should be wrapping before "() => {". 1143 verifyFormat("someFunction(() => {\n" 1144 " doSomething(); // break\n" 1145 "})\n" 1146 " .doSomethingElse(\n" 1147 " // break\n" 1148 " );"); 1149 verifyFormat("const f = (x: string|null): string|null => {\n" 1150 " return x;\n" 1151 "}\n"); 1152 } 1153 1154 TEST_F(FormatTestJS, ReturnStatements) { 1155 verifyFormat("function() {\n" 1156 " return [hello, world];\n" 1157 "}"); 1158 } 1159 1160 TEST_F(FormatTestJS, ForLoops) { 1161 verifyFormat("for (var i in [2, 3]) {\n" 1162 "}"); 1163 verifyFormat("for (var i of [2, 3]) {\n" 1164 "}"); 1165 verifyFormat("for (let {a, b} of x) {\n" 1166 "}"); 1167 verifyFormat("for (let {a, b} of [x]) {\n" 1168 "}"); 1169 verifyFormat("for (let [a, b] of [x]) {\n" 1170 "}"); 1171 verifyFormat("for (let {a, b} in x) {\n" 1172 "}"); 1173 } 1174 1175 TEST_F(FormatTestJS, WrapRespectsAutomaticSemicolonInsertion) { 1176 // The following statements must not wrap, as otherwise the program meaning 1177 // would change due to automatic semicolon insertion. 1178 // See http://www.ecma-international.org/ecma-262/5.1/#sec-7.9.1. 1179 verifyFormat("return aaaaa;", getGoogleJSStyleWithColumns(10)); 1180 verifyFormat("yield aaaaa;", getGoogleJSStyleWithColumns(10)); 1181 verifyFormat("return /* hello! */ aaaaa;", getGoogleJSStyleWithColumns(10)); 1182 verifyFormat("continue aaaaa;", getGoogleJSStyleWithColumns(10)); 1183 verifyFormat("continue /* hello! */ aaaaa;", getGoogleJSStyleWithColumns(10)); 1184 verifyFormat("break aaaaa;", getGoogleJSStyleWithColumns(10)); 1185 verifyFormat("throw aaaaa;", getGoogleJSStyleWithColumns(10)); 1186 verifyFormat("aaaaaaaaa++;", getGoogleJSStyleWithColumns(10)); 1187 verifyFormat("aaaaaaaaa--;", getGoogleJSStyleWithColumns(10)); 1188 verifyFormat("return [\n" 1189 " aaa\n" 1190 "];", 1191 getGoogleJSStyleWithColumns(12)); 1192 verifyFormat("class X {\n" 1193 " readonly ratherLongField =\n" 1194 " 1;\n" 1195 "}", 1196 "class X {\n" 1197 " readonly ratherLongField = 1;\n" 1198 "}", 1199 getGoogleJSStyleWithColumns(20)); 1200 verifyFormat("const x = (5 + 9)\n" 1201 "const y = 3\n", 1202 "const x = ( 5 + 9)\n" 1203 "const y = 3\n"); 1204 // Ideally the foo() bit should be indented relative to the async function(). 1205 verifyFormat("async function\n" 1206 "foo() {}", 1207 getGoogleJSStyleWithColumns(10)); 1208 verifyFormat("await theReckoning;", getGoogleJSStyleWithColumns(10)); 1209 verifyFormat("some['a']['b']", getGoogleJSStyleWithColumns(10)); 1210 verifyFormat("x = (a['a']\n" 1211 " ['b']);", 1212 getGoogleJSStyleWithColumns(10)); 1213 verifyFormat("function f() {\n" 1214 " return foo.bar(\n" 1215 " (param): param is {\n" 1216 " a: SomeType\n" 1217 " }&ABC => 1)\n" 1218 "}", 1219 getGoogleJSStyleWithColumns(25)); 1220 } 1221 1222 TEST_F(FormatTestJS, AddsIsTheDictKeyOnNewline) { 1223 // Do not confuse is, the dict key with is, the type matcher. Put is, the dict 1224 // key, on a newline. 1225 verifyFormat("Polymer({\n" 1226 " is: '', //\n" 1227 " rest: 1\n" 1228 "});", 1229 getGoogleJSStyleWithColumns(20)); 1230 } 1231 1232 TEST_F(FormatTestJS, AutomaticSemicolonInsertionHeuristic) { 1233 verifyFormat("a\n" 1234 "b;", 1235 " a \n" 1236 " b ;"); 1237 verifyFormat("a()\n" 1238 "b;", 1239 " a ()\n" 1240 " b ;"); 1241 verifyFormat("a[b]\n" 1242 "c;", 1243 "a [b]\n" 1244 "c ;"); 1245 verifyFormat("1\n" 1246 "a;", 1247 "1 \n" 1248 "a ;"); 1249 verifyFormat("a\n" 1250 "1;", 1251 "a \n" 1252 "1 ;"); 1253 verifyFormat("a\n" 1254 "'x';", 1255 "a \n" 1256 " 'x';"); 1257 verifyFormat("a++\n" 1258 "b;", 1259 "a ++\n" 1260 "b ;"); 1261 verifyFormat("a\n" 1262 "!b && c;", 1263 "a \n" 1264 " ! b && c;"); 1265 verifyFormat("a\n" 1266 "if (1) f();", 1267 " a\n" 1268 " if (1) f();"); 1269 verifyFormat("a\n" 1270 "class X {}", 1271 " a\n" 1272 " class X {}"); 1273 verifyFormat("var a", "var\n" 1274 "a"); 1275 verifyFormat("x instanceof String", "x\n" 1276 "instanceof\n" 1277 "String"); 1278 verifyFormat("function f(@Foo bar) {}", "function f(@Foo\n" 1279 " bar) {}"); 1280 verifyFormat("function f(@Foo(Param) bar) {}", "function f(@Foo(Param)\n" 1281 " bar) {}"); 1282 verifyFormat("a = true\n" 1283 "return 1", 1284 "a = true\n" 1285 " return 1"); 1286 verifyFormat("a = 's'\n" 1287 "return 1", 1288 "a = 's'\n" 1289 " return 1"); 1290 verifyFormat("a = null\n" 1291 "return 1", 1292 "a = null\n" 1293 " return 1"); 1294 // Below "class Y {}" should ideally be on its own line. 1295 verifyFormat( 1296 "x = {\n" 1297 " a: 1\n" 1298 "} class Y {}", 1299 " x = {a : 1}\n" 1300 " class Y { }"); 1301 verifyFormat( 1302 "if (x) {\n" 1303 "}\n" 1304 "return 1", 1305 "if (x) {}\n" 1306 " return 1"); 1307 verifyFormat( 1308 "if (x) {\n" 1309 "}\n" 1310 "class X {}", 1311 "if (x) {}\n" 1312 " class X {}"); 1313 } 1314 1315 TEST_F(FormatTestJS, ImportExportASI) { 1316 verifyFormat( 1317 "import {x} from 'y'\n" 1318 "export function z() {}", 1319 "import {x} from 'y'\n" 1320 " export function z() {}"); 1321 // Below "class Y {}" should ideally be on its own line. 1322 verifyFormat( 1323 "export {x} class Y {}", 1324 " export {x}\n" 1325 " class Y {\n}"); 1326 verifyFormat( 1327 "if (x) {\n" 1328 "}\n" 1329 "export class Y {}", 1330 "if ( x ) { }\n" 1331 " export class Y {}"); 1332 } 1333 1334 TEST_F(FormatTestJS, ClosureStyleCasts) { 1335 verifyFormat("var x = /** @type {foo} */ (bar);"); 1336 } 1337 1338 TEST_F(FormatTestJS, TryCatch) { 1339 verifyFormat("try {\n" 1340 " f();\n" 1341 "} catch (e) {\n" 1342 " g();\n" 1343 "} finally {\n" 1344 " h();\n" 1345 "}"); 1346 1347 // But, of course, "catch" is a perfectly fine function name in JavaScript. 1348 verifyFormat("someObject.catch();"); 1349 verifyFormat("someObject.new();"); 1350 } 1351 1352 TEST_F(FormatTestJS, StringLiteralConcatenation) { 1353 verifyFormat("var literal = 'hello ' +\n" 1354 " 'world';"); 1355 } 1356 1357 TEST_F(FormatTestJS, RegexLiteralClassification) { 1358 // Regex literals. 1359 verifyFormat("var regex = /abc/;"); 1360 verifyFormat("f(/abc/);"); 1361 verifyFormat("f(abc, /abc/);"); 1362 verifyFormat("some_map[/abc/];"); 1363 verifyFormat("var x = a ? /abc/ : /abc/;"); 1364 verifyFormat("for (var i = 0; /abc/.test(s[i]); i++) {\n}"); 1365 verifyFormat("var x = !/abc/.test(y);"); 1366 verifyFormat("var x = foo()! / 10;"); 1367 verifyFormat("var x = a && /abc/.test(y);"); 1368 verifyFormat("var x = a || /abc/.test(y);"); 1369 verifyFormat("var x = a + /abc/.search(y);"); 1370 verifyFormat("/abc/.search(y);"); 1371 verifyFormat("var regexs = {/abc/, /abc/};"); 1372 verifyFormat("return /abc/;"); 1373 1374 // Not regex literals. 1375 verifyFormat("var a = a / 2 + b / 3;"); 1376 verifyFormat("var a = a++ / 2;"); 1377 // Prefix unary can operate on regex literals, not that it makes sense. 1378 verifyFormat("var a = ++/a/;"); 1379 1380 // This is a known issue, regular expressions are incorrectly detected if 1381 // directly following a closing parenthesis. 1382 verifyFormat("if (foo) / bar /.exec(baz);"); 1383 } 1384 1385 TEST_F(FormatTestJS, RegexLiteralSpecialCharacters) { 1386 verifyFormat("var regex = /=/;"); 1387 verifyFormat("var regex = /a*/;"); 1388 verifyFormat("var regex = /a+/;"); 1389 verifyFormat("var regex = /a?/;"); 1390 verifyFormat("var regex = /.a./;"); 1391 verifyFormat("var regex = /a\\*/;"); 1392 verifyFormat("var regex = /^a$/;"); 1393 verifyFormat("var regex = /\\/a/;"); 1394 verifyFormat("var regex = /(?:x)/;"); 1395 verifyFormat("var regex = /x(?=y)/;"); 1396 verifyFormat("var regex = /x(?!y)/;"); 1397 verifyFormat("var regex = /x|y/;"); 1398 verifyFormat("var regex = /a{2}/;"); 1399 verifyFormat("var regex = /a{1,3}/;"); 1400 1401 verifyFormat("var regex = /[abc]/;"); 1402 verifyFormat("var regex = /[^abc]/;"); 1403 verifyFormat("var regex = /[\\b]/;"); 1404 verifyFormat("var regex = /[/]/;"); 1405 verifyFormat("var regex = /[\\/]/;"); 1406 verifyFormat("var regex = /\\[/;"); 1407 verifyFormat("var regex = /\\\\[/]/;"); 1408 verifyFormat("var regex = /}[\"]/;"); 1409 verifyFormat("var regex = /}[/\"]/;"); 1410 verifyFormat("var regex = /}[\"/]/;"); 1411 1412 verifyFormat("var regex = /\\b/;"); 1413 verifyFormat("var regex = /\\B/;"); 1414 verifyFormat("var regex = /\\d/;"); 1415 verifyFormat("var regex = /\\D/;"); 1416 verifyFormat("var regex = /\\f/;"); 1417 verifyFormat("var regex = /\\n/;"); 1418 verifyFormat("var regex = /\\r/;"); 1419 verifyFormat("var regex = /\\s/;"); 1420 verifyFormat("var regex = /\\S/;"); 1421 verifyFormat("var regex = /\\t/;"); 1422 verifyFormat("var regex = /\\v/;"); 1423 verifyFormat("var regex = /\\w/;"); 1424 verifyFormat("var regex = /\\W/;"); 1425 verifyFormat("var regex = /a(a)\\1/;"); 1426 verifyFormat("var regex = /\\0/;"); 1427 verifyFormat("var regex = /\\\\/g;"); 1428 verifyFormat("var regex = /\\a\\\\/g;"); 1429 verifyFormat("var regex = /\a\\//g;"); 1430 verifyFormat("var regex = /a\\//;\n" 1431 "var x = 0;"); 1432 verifyFormat("var regex = /'/g;", "var regex = /'/g ;"); 1433 verifyFormat("var regex = /'/g; //'", "var regex = /'/g ; //'"); 1434 verifyFormat("var regex = /\\/*/;\n" 1435 "var x = 0;", 1436 "var regex = /\\/*/;\n" 1437 "var x=0;"); 1438 verifyFormat("var x = /a\\//;", "var x = /a\\// \n;"); 1439 verifyFormat("var regex = /\"/;", getGoogleJSStyleWithColumns(16)); 1440 verifyFormat("var regex =\n" 1441 " /\"/;", 1442 getGoogleJSStyleWithColumns(15)); 1443 verifyFormat("var regex = //\n" 1444 " /a/;"); 1445 verifyFormat("var regexs = [\n" 1446 " /d/, //\n" 1447 " /aa/, //\n" 1448 "];"); 1449 } 1450 1451 TEST_F(FormatTestJS, RegexLiteralModifiers) { 1452 verifyFormat("var regex = /abc/g;"); 1453 verifyFormat("var regex = /abc/i;"); 1454 verifyFormat("var regex = /abc/m;"); 1455 verifyFormat("var regex = /abc/y;"); 1456 } 1457 1458 TEST_F(FormatTestJS, RegexLiteralLength) { 1459 verifyFormat("var regex = /aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/;", 1460 getGoogleJSStyleWithColumns(60)); 1461 verifyFormat("var regex =\n" 1462 " /aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/;", 1463 getGoogleJSStyleWithColumns(60)); 1464 verifyFormat("var regex = /\\xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/;", 1465 getGoogleJSStyleWithColumns(50)); 1466 } 1467 1468 TEST_F(FormatTestJS, RegexLiteralExamples) { 1469 verifyFormat("var regex = search.match(/(?:\?|&)times=([^?&]+)/i);"); 1470 } 1471 1472 TEST_F(FormatTestJS, IgnoresMpegTS) { 1473 std::string MpegTS(200, ' '); 1474 MpegTS.replace(0, strlen("nearlyLooks + like + ts + code; "), 1475 "nearlyLooks + like + ts + code; "); 1476 MpegTS[0] = 0x47; 1477 MpegTS[188] = 0x47; 1478 verifyFormat(MpegTS, MpegTS); 1479 } 1480 1481 TEST_F(FormatTestJS, TypeAnnotations) { 1482 verifyFormat("var x: string;"); 1483 verifyFormat("var x: {a: string; b: number;} = {};"); 1484 verifyFormat("function x(): string {\n return 'x';\n}"); 1485 verifyFormat("function x(): {x: string} {\n return {x: 'x'};\n}"); 1486 verifyFormat("function x(y: string): string {\n return 'x';\n}"); 1487 verifyFormat("for (var y: string in x) {\n x();\n}"); 1488 verifyFormat("for (var y: string of x) {\n x();\n}"); 1489 verifyFormat("function x(y: {a?: number;} = {}): number {\n" 1490 " return 12;\n" 1491 "}"); 1492 verifyFormat("const x: Array<{a: number; b: string;}> = [];"); 1493 verifyFormat("((a: string, b: number): string => a + b);"); 1494 verifyFormat("var x: (y: number) => string;"); 1495 verifyFormat("var x: P<string, (a: number) => string>;"); 1496 verifyFormat("var x = {\n" 1497 " y: function(): z {\n" 1498 " return 1;\n" 1499 " }\n" 1500 "};"); 1501 verifyFormat("var x = {\n" 1502 " y: function(): {a: number} {\n" 1503 " return 1;\n" 1504 " }\n" 1505 "};"); 1506 verifyFormat("function someFunc(args: string[]):\n" 1507 " {longReturnValue: string[]} {}", 1508 getGoogleJSStyleWithColumns(60)); 1509 verifyFormat( 1510 "var someValue = (v as aaaaaaaaaaaaaaaaaaaa<T>[])\n" 1511 " .someFunction(aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa);"); 1512 verifyFormat("const xIsALongIdent:\n"" YJustBarelyFitsLinex[];", 1513 getGoogleJSStyleWithColumns(20)); 1514 verifyFormat("const x = {\n" 1515 " y: 1\n" 1516 "} as const;"); 1517 } 1518 1519 TEST_F(FormatTestJS, UnionIntersectionTypes) { 1520 verifyFormat("let x: A|B = A | B;"); 1521 verifyFormat("let x: A&B|C = A & B;"); 1522 verifyFormat("let x: Foo<A|B> = new Foo<A|B>();"); 1523 verifyFormat("function(x: A|B): C&D {}"); 1524 verifyFormat("function(x: A|B = A | B): C&D {}"); 1525 verifyFormat("function x(path: number|string) {}"); 1526 verifyFormat("function x(): string|number {}"); 1527 verifyFormat("type Foo = Bar|Baz;"); 1528 verifyFormat("type Foo = Bar<X>|Baz;"); 1529 verifyFormat("type Foo = (Bar<X>|Baz);"); 1530 verifyFormat("let x: Bar|Baz;"); 1531 verifyFormat("let x: Bar<X>|Baz;"); 1532 verifyFormat("let x: (Foo|Bar)[];"); 1533 verifyFormat("type X = {\n" 1534 " a: Foo|Bar;\n" 1535 "};"); 1536 verifyFormat("export type X = {\n" 1537 " a: Foo|Bar;\n" 1538 "};"); 1539 } 1540 1541 TEST_F(FormatTestJS, UnionIntersectionTypesInObjectType) { 1542 verifyFormat("let x: {x: number|null} = {x: number | null};"); 1543 verifyFormat("let nested: {x: {y: number|null}};"); 1544 verifyFormat("let mixed: {x: [number|null, {w: number}]};"); 1545 verifyFormat("class X {\n" 1546 " contructor(x: {\n" 1547 " a: a|null,\n" 1548 " b: b|null,\n" 1549 " }) {}\n" 1550 "}"); 1551 } 1552 1553 TEST_F(FormatTestJS, ClassDeclarations) { 1554 verifyFormat("class C {\n x: string = 12;\n}"); 1555 verifyFormat("class C {\n x(): string => 12;\n}"); 1556 verifyFormat("class C {\n ['x' + 2]: string = 12;\n}"); 1557 verifyFormat("class C {\n" 1558 " foo() {}\n" 1559 " [bar]() {}\n" 1560 "}\n"); 1561 verifyFormat("class C {\n private x: string = 12;\n}"); 1562 verifyFormat("class C {\n private static x: string = 12;\n}"); 1563 verifyFormat("class C {\n static x(): string {\n return 'asd';\n }\n}"); 1564 verifyFormat("class C extends P implements I {}"); 1565 verifyFormat("class C extends p.P implements i.I {}"); 1566 verifyFormat( 1567 "x(class {\n" 1568 " a(): A {}\n" 1569 "});"); 1570 verifyFormat("class Test {\n" 1571 " aaaaaaaaaaaaaaaa(aaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaaaa):\n" 1572 " aaaaaaaaaaaaaaaaaaaaaa {}\n" 1573 "}"); 1574 verifyFormat("foo = class Name {\n" 1575 " constructor() {}\n" 1576 "};"); 1577 verifyFormat("foo = class {\n" 1578 " constructor() {}\n" 1579 "};"); 1580 verifyFormat("class C {\n" 1581 " x: {y: Z;} = {};\n" 1582 " private y: {y: Z;} = {};\n" 1583 "}"); 1584 1585 // ':' is not a type declaration here. 1586 verifyFormat("class X {\n" 1587 " subs = {\n" 1588 " 'b': {\n" 1589 " 'c': 1,\n" 1590 " },\n" 1591 " };\n" 1592 "}"); 1593 verifyFormat("@Component({\n" 1594 " moduleId: module.id,\n" 1595 "})\n" 1596 "class SessionListComponent implements OnDestroy, OnInit {\n" 1597 "}"); 1598 } 1599 1600 TEST_F(FormatTestJS, StrictPropInitWrap) { 1601 const FormatStyle &Style = getGoogleJSStyleWithColumns(22); 1602 verifyFormat("class X {\n" 1603 " strictPropInitField!:\n" 1604 " string;\n" 1605 "}", 1606 Style); 1607 } 1608 1609 TEST_F(FormatTestJS, InterfaceDeclarations) { 1610 verifyFormat("interface I {\n" 1611 " x: string;\n" 1612 " enum: string[];\n" 1613 " enum?: string[];\n" 1614 "}\n" 1615 "var y;"); 1616 // Ensure that state is reset after parsing the interface. 1617 verifyFormat("interface a {}\n" 1618 "export function b() {}\n" 1619 "var x;"); 1620 1621 // Arrays of object type literals. 1622 verifyFormat("interface I {\n" 1623 " o: {}[];\n" 1624 "}"); 1625 } 1626 1627 TEST_F(FormatTestJS, ObjectTypesInExtendsImplements) { 1628 verifyFormat("class C extends {} {}"); 1629 verifyFormat("class C implements {bar: number} {}"); 1630 // Somewhat odd, but probably closest to reasonable formatting? 1631 verifyFormat("class C implements {\n" 1632 " bar: number,\n" 1633 " baz: string,\n" 1634 "} {}"); 1635 verifyFormat("class C<P extends {}> {}"); 1636 } 1637 1638 TEST_F(FormatTestJS, EnumDeclarations) { 1639 verifyFormat("enum Foo {\n" 1640 " A = 1,\n" 1641 " B\n" 1642 "}"); 1643 verifyFormat("export /* somecomment*/ enum Foo {\n" 1644 " A = 1,\n" 1645 " B\n" 1646 "}"); 1647 verifyFormat("enum Foo {\n" 1648 " A = 1, // comment\n" 1649 " B\n" 1650 "}\n" 1651 "var x = 1;"); 1652 verifyFormat("const enum Foo {\n" 1653 " A = 1,\n" 1654 " B\n" 1655 "}"); 1656 verifyFormat("export const enum Foo {\n" 1657 " A = 1,\n" 1658 " B\n" 1659 "}"); 1660 } 1661 1662 TEST_F(FormatTestJS, Decorators) { 1663 verifyFormat("@A\nclass C {\n}"); 1664 verifyFormat("@A({arg: 'value'})\nclass C {\n}"); 1665 verifyFormat("@A\n@B\nclass C {\n}"); 1666 verifyFormat("class C {\n @A x: string;\n}"); 1667 verifyFormat("class C {\n" 1668 " @A\n" 1669 " private x(): string {\n" 1670 " return 'y';\n" 1671 " }\n" 1672 "}"); 1673 verifyFormat("class C {\n" 1674 " private x(@A x: string) {}\n" 1675 "}"); 1676 verifyFormat("class X {}\n" 1677 "class Y {}"); 1678 verifyFormat("class X {\n" 1679 " @property() private isReply = false;\n" 1680 "}\n"); 1681 } 1682 1683 TEST_F(FormatTestJS, TypeAliases) { 1684 verifyFormat("type X = number;\n" 1685 "class C {}"); 1686 verifyFormat("type X<Y> = Z<Y>;"); 1687 verifyFormat("type X = {\n" 1688 " y: number\n" 1689 "};\n" 1690 "class C {}"); 1691 verifyFormat("export type X = {\n" 1692 " a: string,\n" 1693 " b?: string,\n" 1694 "};\n"); 1695 } 1696 1697 TEST_F(FormatTestJS, TypeInterfaceLineWrapping) { 1698 const FormatStyle &Style = getGoogleJSStyleWithColumns(20); 1699 verifyFormat("type LongTypeIsReallyUnreasonablyLong =\n" 1700 " string;\n", 1701 "type LongTypeIsReallyUnreasonablyLong = string;\n", 1702 Style); 1703 verifyFormat( 1704 "interface AbstractStrategyFactoryProvider {\n" 1705 " a: number\n" 1706 "}\n", 1707 "interface AbstractStrategyFactoryProvider { a: number }\n", 1708 Style); 1709 } 1710 1711 TEST_F(FormatTestJS, RemoveEmptyLinesInArrowFunctions) { 1712 verifyFormat("x = () => {\n" 1713 " foo();\n" 1714 "};\n", 1715 "x = () => {\n" 1716 "\n" 1717 " foo();\n" 1718 "\n" 1719 "};\n"); 1720 } 1721 1722 TEST_F(FormatTestJS, Modules) { 1723 verifyFormat("import SomeThing from 'some/module.js';"); 1724 verifyFormat("import {X, Y} from 'some/module.js';"); 1725 verifyFormat("import a, {X, Y} from 'some/module.js';"); 1726 verifyFormat("import {X, Y,} from 'some/module.js';"); 1727 verifyFormat("import {X as myLocalX, Y as myLocalY} from 'some/module.js';"); 1728 // Ensure Automatic Semicolon Insertion does not break on "as\n". 1729 verifyFormat("import {X as myX} from 'm';", "import {X as\n" 1730 " myX} from 'm';"); 1731 verifyFormat("import * as lib from 'some/module.js';"); 1732 verifyFormat("var x = {import: 1};\nx.import = 2;"); 1733 1734 verifyFormat("export function fn() {\n" 1735 " return 'fn';\n" 1736 "}"); 1737 verifyFormat("export function A() {}\n" 1738 "export default function B() {}\n" 1739 "export function C() {}"); 1740 verifyFormat("export default () => {\n" 1741 " let x = 1;\n" 1742 " return x;\n" 1743 "}"); 1744 verifyFormat("export const x = 12;"); 1745 verifyFormat("export default class X {}"); 1746 verifyFormat("export {X, Y} from 'some/module.js';"); 1747 verifyFormat("export {X, Y,} from 'some/module.js';"); 1748 verifyFormat("export {SomeVeryLongExport as X, " 1749 "SomeOtherVeryLongExport as Y} from 'some/module.js';"); 1750 // export without 'from' is wrapped. 1751 verifyFormat("export let someRatherLongVariableName =\n" 1752 " someSurprisinglyLongVariable + someOtherRatherLongVar;"); 1753 // ... but not if from is just an identifier. 1754 verifyFormat("export {\n" 1755 " from as from,\n" 1756 " someSurprisinglyLongVariable as\n" 1757 " from\n" 1758 "};", 1759 getGoogleJSStyleWithColumns(20)); 1760 verifyFormat("export class C {\n" 1761 " x: number;\n" 1762 " y: string;\n" 1763 "}"); 1764 verifyFormat("export class X {\n" 1765 " y: number;\n" 1766 "}"); 1767 verifyFormat("export abstract class X {\n" 1768 " y: number;\n" 1769 "}"); 1770 verifyFormat("export default class X {\n" 1771 " y: number\n" 1772 "}"); 1773 verifyFormat("export default function() {\n return 1;\n}"); 1774 verifyFormat("export var x = 12;"); 1775 verifyFormat("class C {}\n" 1776 "export function f() {}\n" 1777 "var v;"); 1778 verifyFormat("export var x: number = 12;"); 1779 verifyFormat("export const y = {\n" 1780 " a: 1,\n" 1781 " b: 2\n" 1782 "};"); 1783 verifyFormat("export enum Foo {\n" 1784 " BAR,\n" 1785 " // adsdasd\n" 1786 " BAZ\n" 1787 "}"); 1788 verifyFormat("export default [\n" 1789 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa,\n" 1790 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb\n" 1791 "];"); 1792 verifyFormat("export default [];"); 1793 verifyFormat("export default () => {};"); 1794 verifyFormat("export interface Foo {\n" 1795 " foo: number;\n" 1796 "}\n" 1797 "export class Bar {\n" 1798 " blah(): string {\n" 1799 " return this.blah;\n" 1800 " };\n" 1801 "}"); 1802 } 1803 1804 TEST_F(FormatTestJS, ImportWrapping) { 1805 verifyFormat("import {VeryLongImportsAreAnnoying, VeryLongImportsAreAnnoying," 1806 " VeryLongImportsAreAnnoying, VeryLongImportsAreAnnoying" 1807 "} from 'some/module.js';"); 1808 FormatStyle Style = getGoogleJSStyleWithColumns(80); 1809 Style.JavaScriptWrapImports = true; 1810 verifyFormat("import {\n" 1811 " VeryLongImportsAreAnnoying,\n" 1812 " VeryLongImportsAreAnnoying,\n" 1813 " VeryLongImportsAreAnnoying,\n" 1814 "} from 'some/module.js';", 1815 Style); 1816 verifyFormat("import {\n" 1817 " A,\n" 1818 " A,\n" 1819 "} from 'some/module.js';", 1820 Style); 1821 verifyFormat("export {\n" 1822 " A,\n" 1823 " A,\n" 1824 "} from 'some/module.js';", 1825 Style); 1826 Style.ColumnLimit = 40; 1827 // Using this version of verifyFormat because test::messUp hides the issue. 1828 verifyFormat("import {\n" 1829 " A,\n" 1830 "} from\n" 1831 " 'some/path/longer/than/column/limit/module.js';", 1832 " import { \n" 1833 " A, \n" 1834 " } from\n" 1835 " 'some/path/longer/than/column/limit/module.js' ; ", 1836 Style); 1837 } 1838 1839 TEST_F(FormatTestJS, TemplateStrings) { 1840 // Keeps any whitespace/indentation within the template string. 1841 verifyFormat("var x = `hello\n" 1842 " ${name}\n" 1843 " !`;", 1844 "var x = `hello\n" 1845 " ${ name }\n" 1846 " !`;"); 1847 1848 verifyFormat("var x =\n" 1849 " `hello ${world}` >= some();", 1850 getGoogleJSStyleWithColumns(34)); // Barely doesn't fit. 1851 verifyFormat("var x = `hello ${world}` >= some();", 1852 getGoogleJSStyleWithColumns(35)); // Barely fits. 1853 verifyFormat("var x = `hellö ${wörld}` >= söme();", 1854 getGoogleJSStyleWithColumns(35)); // Fits due to UTF-8. 1855 verifyFormat("var x = `hello\n" 1856 " ${world}` >=\n" 1857 " some();", 1858 "var x =\n" 1859 " `hello\n" 1860 " ${world}` >= some();", 1861 getGoogleJSStyleWithColumns(21)); // Barely doesn't fit. 1862 verifyFormat("var x = `hello\n" 1863 " ${world}` >= some();", 1864 "var x =\n" 1865 " `hello\n" 1866 " ${world}` >= some();", 1867 getGoogleJSStyleWithColumns(22)); // Barely fits. 1868 1869 verifyFormat("var x =\n" 1870 " `h`;", 1871 getGoogleJSStyleWithColumns(11)); 1872 verifyFormat("var x =\n `multi\n line`;", "var x = `multi\n line`;", 1873 getGoogleJSStyleWithColumns(13)); 1874 verifyFormat("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa(\n" 1875 " `aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa`);"); 1876 // Repro for an obscure width-miscounting issue with template strings. 1877 verifyFormat( 1878 "someLongVariable =\n" 1879 " " 1880 "`${logPrefix[11]}/${logPrefix[12]}/${logPrefix[13]}${logPrefix[14]}`;", 1881 "someLongVariable = " 1882 "`${logPrefix[11]}/${logPrefix[12]}/${logPrefix[13]}${logPrefix[14]}`;"); 1883 1884 // Make sure template strings get a proper ColumnWidth assigned, even if they 1885 // are first token in line. 1886 verifyFormat( 1887 "var a = aaaaaaaaaaaaaaaaaaaaaaaaaaaa ||\n" 1888 " `aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa`;"); 1889 1890 // Two template strings. 1891 verifyFormat("var x = `hello` == `hello`;"); 1892 1893 // Comments in template strings. 1894 verifyFormat("var x = `//a`;\n" 1895 "var y;", 1896 "var x =\n `//a`;\n" 1897 "var y ;"); 1898 verifyFormat("var x = `/*a`;\n" 1899 "var y;", 1900 "var x =\n `/*a`;\n" 1901 "var y;"); 1902 // Unterminated string literals in a template string. 1903 verifyFormat("var x = `'`; // comment with matching quote '\n" 1904 "var y;"); 1905 verifyFormat("var x = `\"`; // comment with matching quote \"\n" 1906 "var y;"); 1907 verifyFormat("it(`'aaaaaaaaaaaaaaa `, aaaaaaaaa);", 1908 "it(`'aaaaaaaaaaaaaaa `, aaaaaaaaa) ;", 1909 getGoogleJSStyleWithColumns(40)); 1910 // Backticks in a comment - not a template string. 1911 verifyFormat("var x = 1 // `/*a`;\n" 1912 " ;", 1913 "var x =\n 1 // `/*a`;\n" 1914 " ;"); 1915 verifyFormat("/* ` */ var x = 1; /* ` */", "/* ` */ var x\n= 1; /* ` */"); 1916 // Comment spans multiple template strings. 1917 verifyFormat("var x = `/*a`;\n" 1918 "var y = ` */ `;", 1919 "var x =\n `/*a`;\n" 1920 "var y =\n ` */ `;"); 1921 // Escaped backtick. 1922 verifyFormat("var x = ` \\` a`;\n" 1923 "var y;", 1924 "var x = ` \\` a`;\n" 1925 "var y;"); 1926 // Escaped dollar. 1927 verifyFormat("var x = ` \\${foo}`;\n"); 1928 1929 // The token stream can contain two string_literals in sequence, but that 1930 // doesn't mean that they are implicitly concatenated in JavaScript. 1931 verifyFormat("var f = `aaaa ${a ? 'a' : 'b'}`;"); 1932 1933 // Ensure that scopes are appropriately set around evaluated expressions in 1934 // template strings. 1935 verifyFormat("var f = `aaaaaaaaaaaaa:${aaaaaaa.aaaaa} aaaaaaaa\n" 1936 " aaaaaaaaaaaaa:${aaaaaaa.aaaaa} aaaaaaaa`;", 1937 "var f = `aaaaaaaaaaaaa:${aaaaaaa. aaaaa} aaaaaaaa\n" 1938 " aaaaaaaaaaaaa:${ aaaaaaa. aaaaa} aaaaaaaa`;"); 1939 verifyFormat("var x = someFunction(`${})`) //\n" 1940 " .oooooooooooooooooon();"); 1941 verifyFormat("var x = someFunction(`${aaaa}${\n" 1942 " aaaaa( //\n" 1943 " aaaaa)})`);"); 1944 } 1945 1946 TEST_F(FormatTestJS, TemplateStringMultiLineExpression) { 1947 verifyFormat("var f = `aaaaaaaaaaaaaaaaaa: ${\n" 1948 " aaaaa + //\n" 1949 " bbbb}`;", 1950 "var f = `aaaaaaaaaaaaaaaaaa: ${aaaaa + //\n" 1951 " bbbb}`;"); 1952 verifyFormat("var f = `\n" 1953 " aaaaaaaaaaaaaaaaaa: ${\n" 1954 " aaaaa + //\n" 1955 " bbbb}`;", 1956 "var f = `\n" 1957 " aaaaaaaaaaaaaaaaaa: ${ aaaaa + //\n" 1958 " bbbb }`;"); 1959 verifyFormat("var f = `\n" 1960 " aaaaaaaaaaaaaaaaaa: ${\n" 1961 " someFunction(\n" 1962 " aaaaa + //\n" 1963 " bbbb)}`;", 1964 "var f = `\n" 1965 " aaaaaaaaaaaaaaaaaa: ${someFunction (\n" 1966 " aaaaa + //\n" 1967 " bbbb)}`;"); 1968 1969 // It might be preferable to wrap before "someFunction". 1970 verifyFormat("var f = `\n" 1971 " aaaaaaaaaaaaaaaaaa: ${someFunction({\n" 1972 " aaaa: aaaaa,\n" 1973 " bbbb: bbbbb,\n" 1974 "})}`;", 1975 "var f = `\n" 1976 " aaaaaaaaaaaaaaaaaa: ${someFunction ({\n" 1977 " aaaa: aaaaa,\n" 1978 " bbbb: bbbbb,\n" 1979 " })}`;"); 1980 } 1981 1982 TEST_F(FormatTestJS, TemplateStringASI) { 1983 verifyFormat("var x = `hello${world}`;", "var x = `hello${\n" 1984 " world\n" 1985 "}`;"); 1986 } 1987 1988 TEST_F(FormatTestJS, NestedTemplateStrings) { 1989 verifyFormat( 1990 "var x = `<ul>${xs.map(x => `<li>${x}</li>`).join('\\n')}</ul>`;"); 1991 verifyFormat("var x = `he${({text: 'll'}.text)}o`;"); 1992 1993 // Crashed at some point. 1994 verifyFormat("}"); 1995 } 1996 1997 TEST_F(FormatTestJS, TaggedTemplateStrings) { 1998 verifyFormat("var x = html`<ul>`;"); 1999 verifyFormat("yield `hello`;"); 2000 verifyFormat("var f = {\n" 2001 " param: longTagName`This is a ${\n" 2002 " 'really'} long line`\n" 2003 "};", 2004 "var f = {param: longTagName`This is a ${'really'} long line`};", 2005 getGoogleJSStyleWithColumns(40)); 2006 } 2007 2008 TEST_F(FormatTestJS, CastSyntax) { 2009 verifyFormat("var x = <type>foo;"); 2010 verifyFormat("var x = foo as type;"); 2011 verifyFormat("let x = (a + b) as\n" 2012 " LongTypeIsLong;", 2013 getGoogleJSStyleWithColumns(20)); 2014 verifyFormat("foo = <Bar[]>[\n" 2015 " 1, //\n" 2016 " 2\n" 2017 "];"); 2018 verifyFormat("var x = [{x: 1} as type];"); 2019 verifyFormat("x = x as [a, b];"); 2020 verifyFormat("x = x as {a: string};"); 2021 verifyFormat("x = x as (string);"); 2022 verifyFormat("x = x! as (string);"); 2023 verifyFormat("x = y! in z;"); 2024 verifyFormat("var x = something.someFunction() as\n" 2025 " something;", 2026 getGoogleJSStyleWithColumns(40)); 2027 } 2028 2029 TEST_F(FormatTestJS, TypeArguments) { 2030 verifyFormat("class X<Y> {}"); 2031 verifyFormat("new X<Y>();"); 2032 verifyFormat("foo<Y>(a);"); 2033 verifyFormat("var x: X<Y>[];"); 2034 verifyFormat("class C extends D<E> implements F<G>, H<I> {}"); 2035 verifyFormat("function f(a: List<any> = null) {}"); 2036 verifyFormat("function f(): List<any> {}"); 2037 verifyFormat("function aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa():\n" 2038 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb {}"); 2039 verifyFormat("function aaaaaaaaaa(\n" 2040 " aaaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaaa,\n" 2041 " aaaaaaaaaaaaaaaa: aaaaaaaaaaaaaaaaaaa):\n" 2042 " aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa {}"); 2043 } 2044 2045 TEST_F(FormatTestJS, UserDefinedTypeGuards) { 2046 verifyFormat( 2047 "function foo(check: Object):\n" 2048 " check is {foo: string, bar: string, baz: string, foobar: string} {\n" 2049 " return 'bar' in check;\n" 2050 "}\n"); 2051 } 2052 2053 TEST_F(FormatTestJS, OptionalTypes) { 2054 verifyFormat("function x(a?: b, c?, d?) {}"); 2055 verifyFormat("class X {\n" 2056 " y?: z;\n" 2057 " z?;\n" 2058 "}"); 2059 verifyFormat("interface X {\n" 2060 " y?(): z;\n" 2061 "}"); 2062 verifyFormat("constructor({aa}: {\n" 2063 " aa?: string,\n" 2064 " aaaaaaaa?: string,\n" 2065 " aaaaaaaaaaaaaaa?: boolean,\n" 2066 " aaaaaa?: List<string>\n" 2067 "}) {}"); 2068 } 2069 2070 TEST_F(FormatTestJS, IndexSignature) { 2071 verifyFormat("var x: {[k: string]: v};"); 2072 } 2073 2074 TEST_F(FormatTestJS, WrapAfterParen) { 2075 verifyFormat("xxxxxxxxxxx(\n" 2076 " aaa, aaa);", 2077 getGoogleJSStyleWithColumns(20)); 2078 verifyFormat("xxxxxxxxxxx(\n" 2079 " aaa, aaa, aaa,\n" 2080 " aaa, aaa, aaa);", 2081 getGoogleJSStyleWithColumns(20)); 2082 verifyFormat("xxxxxxxxxxx(\n" 2083 " aaaaaaaaaaaaaaaaaaaaaaaa,\n" 2084 " function(x) {\n" 2085 " y(); //\n" 2086 " });", 2087 getGoogleJSStyleWithColumns(40)); 2088 verifyFormat("while (aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&\n" 2089 " bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb) {\n}"); 2090 } 2091 2092 TEST_F(FormatTestJS, JSDocAnnotations) { 2093 verifyFormat("/**\n" 2094 " * @exports {this.is.a.long.path.to.a.Type}\n" 2095 " */", 2096 "/**\n" 2097 " * @exports {this.is.a.long.path.to.a.Type}\n" 2098 " */", 2099 getGoogleJSStyleWithColumns(20)); 2100 verifyFormat("/**\n" 2101 " * @mods {this.is.a.long.path.to.a.Type}\n" 2102 " */", 2103 "/**\n" 2104 " * @mods {this.is.a.long.path.to.a.Type}\n" 2105 " */", 2106 getGoogleJSStyleWithColumns(20)); 2107 verifyFormat("/**\n" 2108 " * @mods {this.is.a.long.path.to.a.Type}\n" 2109 " */", 2110 "/**\n" 2111 " * @mods {this.is.a.long.path.to.a.Type}\n" 2112 " */", 2113 getGoogleJSStyleWithColumns(20)); 2114 verifyFormat("/**\n" 2115 " * @param {canWrap\n" 2116 " * onSpace}\n" 2117 " */", 2118 "/**\n" 2119 " * @param {canWrap onSpace}\n" 2120 " */", 2121 getGoogleJSStyleWithColumns(20)); 2122 // make sure clang-format doesn't break before *any* '{' 2123 verifyFormat("/**\n" 2124 " * @lala {lala {lalala\n" 2125 " */\n", 2126 "/**\n" 2127 " * @lala {lala {lalala\n" 2128 " */\n", 2129 getGoogleJSStyleWithColumns(20)); 2130 verifyFormat("/**\n" 2131 " * @see http://very/very/long/url/is/long\n" 2132 " */", 2133 "/**\n" 2134 " * @see http://very/very/long/url/is/long\n" 2135 " */", 2136 getGoogleJSStyleWithColumns(20)); 2137 verifyFormat( 2138 "/**\n" 2139 " * @param This is a\n" 2140 " * long comment\n" 2141 " * but no type\n" 2142 " */", 2143 "/**\n" 2144 " * @param This is a long comment but no type\n" 2145 " */", 2146 getGoogleJSStyleWithColumns(20)); 2147 // Break and reindent @param line and reflow unrelated lines. 2148 EXPECT_EQ("{\n" 2149 " /**\n" 2150 " * long long long\n" 2151 " * long\n" 2152 " * @param {this.is.a.long.path.to.a.Type}\n" 2153 " * a\n" 2154 " * long long long\n" 2155 " * long long\n" 2156 " */\n" 2157 " function f(a) {}\n" 2158 "}", 2159 format("{\n" 2160 "/**\n" 2161 " * long long long long\n" 2162 " * @param {this.is.a.long.path.to.a.Type} a\n" 2163 " * long long long long\n" 2164 " * long\n" 2165 " */\n" 2166 " function f(a) {}\n" 2167 "}", 2168 getGoogleJSStyleWithColumns(20))); 2169 } 2170 2171 TEST_F(FormatTestJS, RequoteStringsSingle) { 2172 verifyFormat("var x = 'foo';", "var x = \"foo\";"); 2173 verifyFormat("var x = 'fo\\'o\\'';", "var x = \"fo'o'\";"); 2174 verifyFormat("var x = 'fo\\'o\\'';", "var x = \"fo\\'o'\";"); 2175 verifyFormat( 2176 "var x =\n" 2177 " 'foo\\'';", 2178 // Code below is 15 chars wide, doesn't fit into the line with the 2179 // \ escape added. 2180 "var x = \"foo'\";", getGoogleJSStyleWithColumns(15)); 2181 // Removes no-longer needed \ escape from ". 2182 verifyFormat("var x = 'fo\"o';", "var x = \"fo\\\"o\";"); 2183 // Code below fits into 15 chars *after* removing the \ escape. 2184 verifyFormat("var x = 'fo\"o';", "var x = \"fo\\\"o\";", 2185 getGoogleJSStyleWithColumns(15)); 2186 verifyFormat("// clang-format off\n" 2187 "let x = \"double\";\n" 2188 "// clang-format on\n" 2189 "let x = 'single';\n", 2190 "// clang-format off\n" 2191 "let x = \"double\";\n" 2192 "// clang-format on\n" 2193 "let x = \"single\";\n"); 2194 } 2195 2196 TEST_F(FormatTestJS, RequoteAndIndent) { 2197 verifyFormat("let x = someVeryLongFunctionThatGoesOnAndOn(\n" 2198 " 'double quoted string that needs wrapping');", 2199 "let x = someVeryLongFunctionThatGoesOnAndOn(" 2200 "\"double quoted string that needs wrapping\");"); 2201 2202 verifyFormat("let x =\n" 2203 " 'foo\\'oo';\n" 2204 "let x =\n" 2205 " 'foo\\'oo';", 2206 "let x=\"foo'oo\";\n" 2207 "let x=\"foo'oo\";", 2208 getGoogleJSStyleWithColumns(15)); 2209 } 2210 2211 TEST_F(FormatTestJS, RequoteStringsDouble) { 2212 FormatStyle DoubleQuotes = getGoogleStyle(FormatStyle::LK_JavaScript); 2213 DoubleQuotes.JavaScriptQuotes = FormatStyle::JSQS_Double; 2214 verifyFormat("var x = \"foo\";", DoubleQuotes); 2215 verifyFormat("var x = \"foo\";", "var x = 'foo';", DoubleQuotes); 2216 verifyFormat("var x = \"fo'o\";", "var x = 'fo\\'o';", DoubleQuotes); 2217 } 2218 2219 TEST_F(FormatTestJS, RequoteStringsLeave) { 2220 FormatStyle LeaveQuotes = getGoogleStyle(FormatStyle::LK_JavaScript); 2221 LeaveQuotes.JavaScriptQuotes = FormatStyle::JSQS_Leave; 2222 verifyFormat("var x = \"foo\";", LeaveQuotes); 2223 verifyFormat("var x = 'foo';", LeaveQuotes); 2224 } 2225 2226 TEST_F(FormatTestJS, SupportShebangLines) { 2227 verifyFormat("#!/usr/bin/env node\n" 2228 "var x = hello();", 2229 "#!/usr/bin/env node\n" 2230 "var x = hello();"); 2231 } 2232 2233 TEST_F(FormatTestJS, NonNullAssertionOperator) { 2234 verifyFormat("let x = foo!.bar();\n"); 2235 verifyFormat("let x = foo ? bar! : baz;\n"); 2236 verifyFormat("let x = !foo;\n"); 2237 verifyFormat("if (!+a) {\n}"); 2238 verifyFormat("let x = foo[0]!;\n"); 2239 verifyFormat("let x = (foo)!;\n"); 2240 verifyFormat("let x = x(foo!);\n"); 2241 verifyFormat( 2242 "a.aaaaaa(a.a!).then(\n" 2243 " x => x(x));\n", 2244 getGoogleJSStyleWithColumns(20)); 2245 verifyFormat("let x = foo! - 1;\n"); 2246 verifyFormat("let x = {foo: 1}!;\n"); 2247 verifyFormat( 2248 "let x = hello.foo()!\n" 2249 " .foo()!\n" 2250 " .foo()!\n" 2251 " .foo()!;\n", 2252 getGoogleJSStyleWithColumns(20)); 2253 verifyFormat("let x = namespace!;\n"); 2254 verifyFormat("return !!x;\n"); 2255 } 2256 2257 TEST_F(FormatTestJS, NullPropagatingOperator) { 2258 verifyFormat("let x = foo?.bar?.baz();\n"); 2259 verifyFormat("let x = foo?.(foo);\n"); 2260 verifyFormat("let x = foo?.['arr'];\n"); 2261 } 2262 2263 TEST_F(FormatTestJS, NullishCoalescingOperator) { 2264 verifyFormat("const val = something ?? 'some other default';\n"); 2265 } 2266 2267 TEST_F(FormatTestJS, Conditional) { 2268 verifyFormat("y = x ? 1 : 2;"); 2269 verifyFormat("x ? 1 : 2;"); 2270 verifyFormat("class Foo {\n" 2271 " field = true ? 1 : 2;\n" 2272 " method(a = true ? 1 : 2) {}\n" 2273 "}"); 2274 } 2275 2276 TEST_F(FormatTestJS, ImportComments) { 2277 verifyFormat("import {x} from 'x'; // from some location", 2278 getGoogleJSStyleWithColumns(25)); 2279 verifyFormat("// taze: x from 'location'", getGoogleJSStyleWithColumns(10)); 2280 verifyFormat("/// <reference path=\"some/location\" />", getGoogleJSStyleWithColumns(10)); 2281 } 2282 2283 TEST_F(FormatTestJS, Exponentiation) { 2284 verifyFormat("squared = x ** 2;"); 2285 verifyFormat("squared **= 2;"); 2286 } 2287 2288 TEST_F(FormatTestJS, NestedLiterals) { 2289 FormatStyle FourSpaces = getGoogleJSStyleWithColumns(15); 2290 FourSpaces.IndentWidth = 4; 2291 verifyFormat("var l = [\n" 2292 " [\n" 2293 " 1,\n" 2294 " ],\n" 2295 "];", FourSpaces); 2296 verifyFormat("var l = [\n" 2297 " {\n" 2298 " 1: 1,\n" 2299 " },\n" 2300 "];", FourSpaces); 2301 verifyFormat("someFunction(\n" 2302 " p1,\n" 2303 " [\n" 2304 " 1,\n" 2305 " ],\n" 2306 ");", FourSpaces); 2307 verifyFormat("someFunction(\n" 2308 " p1,\n" 2309 " {\n" 2310 " 1: 1,\n" 2311 " },\n" 2312 ");", FourSpaces); 2313 verifyFormat("var o = {\n" 2314 " 1: 1,\n" 2315 " 2: {\n" 2316 " 3: 3,\n" 2317 " },\n" 2318 "};", FourSpaces); 2319 verifyFormat("var o = {\n" 2320 " 1: 1,\n" 2321 " 2: [\n" 2322 " 3,\n" 2323 " ],\n" 2324 "};", FourSpaces); 2325 } 2326 2327 TEST_F(FormatTestJS, BackslashesInComments) { 2328 verifyFormat("// hello \\\n" 2329 "if (x) foo();\n", 2330 "// hello \\\n" 2331 " if ( x) \n" 2332 " foo();\n"); 2333 verifyFormat("/* ignore \\\n" 2334 " */\n" 2335 "if (x) foo();\n", 2336 "/* ignore \\\n" 2337 " */\n" 2338 " if ( x) foo();\n"); 2339 verifyFormat("// st \\ art\\\n" 2340 "// comment" 2341 "// continue \\\n" 2342 "formatMe();\n", 2343 "// st \\ art\\\n" 2344 "// comment" 2345 "// continue \\\n" 2346 "formatMe( );\n"); 2347 } 2348 2349 TEST_F(FormatTestJS, AddsLastLinePenaltyIfEndingIsBroken) { 2350 EXPECT_EQ( 2351 "a = function() {\n" 2352 " b = function() {\n" 2353 " this.aaaaaaaaaaaaaaaaaaa[aaaaaaaaaaa] = aaaa.aaaaaa ?\n" 2354 " aaaa.aaaaaa : /** @type " 2355 "{aaaa.aaaa.aaaaaaaaa.aaaaaaaaaaaaaaaaaaa} */\n" 2356 " (aaaa.aaaa.aaaaaaaaa.aaaaaaaaaaaaa.aaaaaaaaaaaaaaaaa);\n" 2357 " };\n" 2358 "};", 2359 format("a = function() {\n" 2360 " b = function() {\n" 2361 " this.aaaaaaaaaaaaaaaaaaa[aaaaaaaaaaa] = aaaa.aaaaaa ? " 2362 "aaaa.aaaaaa : /** @type " 2363 "{aaaa.aaaa.aaaaaaaaa.aaaaaaaaaaaaaaaaaaa} */\n" 2364 " (aaaa.aaaa.aaaaaaaaa.aaaaaaaaaaaaa.aaaaaaaaaaaaaaaaa);\n" 2365 " };\n" 2366 "};")); 2367 } 2368 2369 TEST_F(FormatTestJS, ParameterNamingComment) { 2370 verifyFormat("callFoo(/*spaceAfterParameterNamingComment=*/ 1);"); 2371 } 2372 2373 TEST_F(FormatTestJS, ConditionalTypes) { 2374 // Formatting below is not necessarily intentional, this just ensures that 2375 // clang-format does not break the code. 2376 verifyFormat( // wrap 2377 "type UnionToIntersection<U> =\n" 2378 " (U extends any ? (k: U) => void :\n" 2379 " never) extends((k: infer I) => void) ? I : never;"); 2380 } 2381 2382 TEST_F(FormatTestJS, SupportPrivateFieldsAndMethods) { 2383 verifyFormat("class Example {\n" 2384 " pub = 1;\n" 2385 " #priv = 2;\n" 2386 " static pub2 = 'foo';\n" 2387 " static #priv2 = 'bar';\n" 2388 " method() {\n" 2389 " this.#priv = 5;\n" 2390 " }\n" 2391 " static staticMethod() {\n" 2392 " switch (this.#priv) {\n" 2393 " case '1':\n" 2394 " #priv = 3;\n" 2395 " break;\n" 2396 " }\n" 2397 " }\n" 2398 " #privateMethod() {\n" 2399 " this.#privateMethod(); // infinite loop\n" 2400 " }\n" 2401 " static #staticPrivateMethod() {}\n"); 2402 } 2403 2404 TEST_F(FormatTestJS, DeclaredFields) { 2405 verifyFormat("class Example {\n" 2406 " declare pub: string;\n" 2407 " declare private priv: string;\n" 2408 "}\n"); 2409 } 2410 2411 } // namespace format 2412 } // end namespace clang 2413