eslint/tests/lib/rules/no-irregular-whitespace.js

   1 /**
   2  * @fileoverview Tests for no-irregular-whitespace rule.
   3  * @author Jonathan Kingston
   4  */
   5
   6 "use strict";
   7
   8 //------------------------------------------------------------------------------
   9 // Requirements
  10 //------------------------------------------------------------------------------
  11
  12 const rule = require("../../../lib/rules/no-irregular-whitespace"),
  13     { RuleTester } = require("../../../lib/rule-tester");
  14
  15 //------------------------------------------------------------------------------
  16 // Tests
  17 //------------------------------------------------------------------------------
  18
  19 const ruleTester = new RuleTester();
  20
  21 const expectedErrors = [{
  22     messageId: "noIrregularWhitespace",
  23     type: "Program"
  24 }];
  25 const expectedCommentErrors = [{
  26     messageId: "noIrregularWhitespace",
  27     type: "Program",
  28     line: 1,
  29     column: 4
  30 }];
  31
  32 ruleTester.run("no-irregular-whitespace", rule, {
  33     valid: [
  34         "'\\u000B';",
  35         "'\\u000C';",
  36         "'\\u0085';",
  37         "'\\u00A0';",
  38         "'\\u180E';",
  39         "'\\ufeff';",
  40         "'\\u2000';",
  41         "'\\u2001';",
  42         "'\\u2002';",
  43         "'\\u2003';",
  44         "'\\u2004';",
  45         "'\\u2005';",
  46         "'\\u2006';",
  47         "'\\u2007';",
  48         "'\\u2008';",
  49         "'\\u2009';",
  50         "'\\u200A';",
  51         "'\\u200B';",
  52         "'\\u2028';",
  53         "'\\u2029';",
  54         "'\\u202F';",
  55         "'\\u205f';",
  56         "'\\u3000';",
  57         "'\u000B';",
  58         "'\u000C';",
  59         "'\u0085';",
  60         "'\u00A0';",
  61         "'\u180E';",
  62         "'\ufeff';",
  63         "'\u2000';",
  64         "'\u2001';",
  65         "'\u2002';",
  66         "'\u2003';",
  67         "'\u2004';",
  68         "'\u2005';",
  69         "'\u2006';",
  70         "'\u2007';",
  71         "'\u2008';",
  72         "'\u2009';",
  73         "'\u200A';",
  74         "'\u200B';",
  75         "'\\\u2028';", // multiline string
  76         "'\\\u2029';", // multiline string
  77         "'\u202F';",
  78         "'\u205f';",
  79         "'\u3000';",
  80         { code: "// \u000B", options: [{ skipComments: true }] },
  81         { code: "// \u000C", options: [{ skipComments: true }] },
  82         { code: "// \u0085", options: [{ skipComments: true }] },
  83         { code: "// \u00A0", options: [{ skipComments: true }] },
  84         { code: "// \u180E", options: [{ skipComments: true }] },
  85         { code: "// \ufeff", options: [{ skipComments: true }] },
  86         { code: "// \u2000", options: [{ skipComments: true }] },
  87         { code: "// \u2001", options: [{ skipComments: true }] },
  88         { code: "// \u2002", options: [{ skipComments: true }] },
  89         { code: "// \u2003", options: [{ skipComments: true }] },
  90         { code: "// \u2004", options: [{ skipComments: true }] },
  91         { code: "// \u2005", options: [{ skipComments: true }] },
  92         { code: "// \u2006", options: [{ skipComments: true }] },
  93         { code: "// \u2007", options: [{ skipComments: true }] },
  94         { code: "// \u2008", options: [{ skipComments: true }] },
  95         { code: "// \u2009", options: [{ skipComments: true }] },
  96         { code: "// \u200A", options: [{ skipComments: true }] },
  97         { code: "// \u200B", options: [{ skipComments: true }] },
  98         { code: "// \u202F", options: [{ skipComments: true }] },
  99         { code: "// \u205f", options: [{ skipComments: true }] },
 100         { code: "// \u3000", options: [{ skipComments: true }] },
 101         { code: "/* \u000B */", options: [{ skipComments: true }] },
 102         { code: "/* \u000C */", options: [{ skipComments: true }] },
 103         { code: "/* \u0085 */", options: [{ skipComments: true }] },
 104         { code: "/* \u00A0 */", options: [{ skipComments: true }] },
 105         { code: "/* \u180E */", options: [{ skipComments: true }] },
 106         { code: "/* \ufeff */", options: [{ skipComments: true }] },
 107         { code: "/* \u2000 */", options: [{ skipComments: true }] },
 108         { code: "/* \u2001 */", options: [{ skipComments: true }] },
 109         { code: "/* \u2002 */", options: [{ skipComments: true }] },
 110         { code: "/* \u2003 */", options: [{ skipComments: true }] },
 111         { code: "/* \u2004 */", options: [{ skipComments: true }] },
 112         { code: "/* \u2005 */", options: [{ skipComments: true }] },
 113         { code: "/* \u2006 */", options: [{ skipComments: true }] },
 114         { code: "/* \u2007 */", options: [{ skipComments: true }] },
 115         { code: "/* \u2008 */", options: [{ skipComments: true }] },
 116         { code: "/* \u2009 */", options: [{ skipComments: true }] },
 117         { code: "/* \u200A */", options: [{ skipComments: true }] },
 118         { code: "/* \u200B */", options: [{ skipComments: true }] },
 119         { code: "/* \u2028 */", options: [{ skipComments: true }] },
 120         { code: "/* \u2029 */", options: [{ skipComments: true }] },
 121         { code: "/* \u202F */", options: [{ skipComments: true }] },
 122         { code: "/* \u205f */", options: [{ skipComments: true }] },
 123         { code: "/* \u3000 */", options: [{ skipComments: true }] },
 124         { code: "/\u000B/", options: [{ skipRegExps: true }] },
 125         { code: "/\u000C/", options: [{ skipRegExps: true }] },
 126         { code: "/\u0085/", options: [{ skipRegExps: true }] },
 127         { code: "/\u00A0/", options: [{ skipRegExps: true }] },
 128         { code: "/\u180E/", options: [{ skipRegExps: true }] },
 129         { code: "/\ufeff/", options: [{ skipRegExps: true }] },
 130         { code: "/\u2000/", options: [{ skipRegExps: true }] },
 131         { code: "/\u2001/", options: [{ skipRegExps: true }] },
 132         { code: "/\u2002/", options: [{ skipRegExps: true }] },
 133         { code: "/\u2003/", options: [{ skipRegExps: true }] },
 134         { code: "/\u2004/", options: [{ skipRegExps: true }] },
 135         { code: "/\u2005/", options: [{ skipRegExps: true }] },
 136         { code: "/\u2006/", options: [{ skipRegExps: true }] },
 137         { code: "/\u2007/", options: [{ skipRegExps: true }] },
 138         { code: "/\u2008/", options: [{ skipRegExps: true }] },
 139         { code: "/\u2009/", options: [{ skipRegExps: true }] },
 140         { code: "/\u200A/", options: [{ skipRegExps: true }] },
 141         { code: "/\u200B/", options: [{ skipRegExps: true }] },
 142         { code: "/\u202F/", options: [{ skipRegExps: true }] },
 143         { code: "/\u205f/", options: [{ skipRegExps: true }] },
 144         { code: "/\u3000/", options: [{ skipRegExps: true }] },
 145         { code: "`\u000B`", options: [{ skipTemplates: true }], parserOptions: { ecmaVersion: 6 } },
 146         { code: "`\u000C`", options: [{ skipTemplates: true }], parserOptions: { ecmaVersion: 6 } },
 147         { code: "`\u0085`", options: [{ skipTemplates: true }], parserOptions: { ecmaVersion: 6 } },
 148         { code: "`\u00A0`", options: [{ skipTemplates: true }], parserOptions: { ecmaVersion: 6 } },
 149         { code: "`\u180E`", options: [{ skipTemplates: true }], parserOptions: { ecmaVersion: 6 } },
 150         { code: "`\ufeff`", options: [{ skipTemplates: true }], parserOptions: { ecmaVersion: 6 } },
 151         { code: "`\u2000`", options: [{ skipTemplates: true }], parserOptions: { ecmaVersion: 6 } },
 152         { code: "`\u2001`", options: [{ skipTemplates: true }], parserOptions: { ecmaVersion: 6 } },
 153         { code: "`\u2002`", options: [{ skipTemplates: true }], parserOptions: { ecmaVersion: 6 } },
 154         { code: "`\u2003`", options: [{ skipTemplates: true }], parserOptions: { ecmaVersion: 6 } },
 155         { code: "`\u2004`", options: [{ skipTemplates: true }], parserOptions: { ecmaVersion: 6 } },
 156         { code: "`\u2005`", options: [{ skipTemplates: true }], parserOptions: { ecmaVersion: 6 } },
 157         { code: "`\u2006`", options: [{ skipTemplates: true }], parserOptions: { ecmaVersion: 6 } },
 158         { code: "`\u2007`", options: [{ skipTemplates: true }], parserOptions: { ecmaVersion: 6 } },
 159         { code: "`\u2008`", options: [{ skipTemplates: true }], parserOptions: { ecmaVersion: 6 } },
 160         { code: "`\u2009`", options: [{ skipTemplates: true }], parserOptions: { ecmaVersion: 6 } },
 161         { code: "`\u200A`", options: [{ skipTemplates: true }], parserOptions: { ecmaVersion: 6 } },
 162         { code: "`\u200B`", options: [{ skipTemplates: true }], parserOptions: { ecmaVersion: 6 } },
 163         { code: "`\u202F`", options: [{ skipTemplates: true }], parserOptions: { ecmaVersion: 6 } },
 164         { code: "`\u205f`", options: [{ skipTemplates: true }], parserOptions: { ecmaVersion: 6 } },
 165         { code: "`\u3000`", options: [{ skipTemplates: true }], parserOptions: { ecmaVersion: 6 } },
 166
 167         // Unicode BOM.
 168         "\uFEFFconsole.log('hello BOM');"
 169     ],
 170
 171     invalid: [
 172         {
 173             code: "var any \u000B = 'thing';",
 174             errors: expectedErrors
 175         },
 176         {
 177             code: "var any \u000C = 'thing';",
 178             errors: expectedErrors
 179         },
 180         {
 181             code: "var any \u00A0 = 'thing';",
 182             errors: expectedErrors
 183         },
 184
 185         /*
 186          * it was moved out of General_Category=Zs (separator, space) in Unicode 6.3.0, so should not be considered a whitespace character.
 187          * https://codeblog.jonskeet.uk/2014/12/01/when-is-an-identifier-not-an-identifier-attack-of-the-mongolian-vowel-separator/
 188          * {
 189          *     code: "var any \u180E = 'thing';",
 190          *     errors: expectedErrors
 191          * },
 192          */
 193         {
 194             code: "var any \ufeff = 'thing';",
 195             errors: expectedErrors
 196         },
 197         {
 198             code: "var any \u2000 = 'thing';",
 199             errors: expectedErrors
 200         },
 201         {
 202             code: "var any \u2001 = 'thing';",
 203             errors: expectedErrors
 204         },
 205         {
 206             code: "var any \u2002 = 'thing';",
 207             errors: expectedErrors
 208         },
 209         {
 210             code: "var any \u2003 = 'thing';",
 211             errors: expectedErrors
 212         },
 213         {
 214             code: "var any \u2004 = 'thing';",
 215             errors: expectedErrors
 216         },
 217         {
 218             code: "var any \u2005 = 'thing';",
 219             errors: expectedErrors
 220         },
 221         {
 222             code: "var any \u2006 = 'thing';",
 223             errors: expectedErrors
 224         },
 225         {
 226             code: "var any \u2007 = 'thing';",
 227             errors: expectedErrors
 228         },
 229         {
 230             code: "var any \u2008 = 'thing';",
 231             errors: expectedErrors
 232         },
 233         {
 234             code: "var any \u2009 = 'thing';",
 235             errors: expectedErrors
 236         },
 237         {
 238             code: "var any \u200A = 'thing';",
 239             errors: expectedErrors
 240         },
 241         {
 242             code: "var any \u2028 = 'thing';",
 243             errors: expectedErrors
 244         },
 245         {
 246             code: "var any \u2029 = 'thing';",
 247             errors: expectedErrors
 248         },
 249         {
 250             code: "var any \u202F = 'thing';",
 251             errors: expectedErrors
 252         },
 253         {
 254             code: "var any \u205f = 'thing';",
 255             errors: expectedErrors
 256         },
 257         {
 258             code: "var any \u3000 = 'thing';",
 259             errors: expectedErrors
 260         },
 261         {
 262             code: "var a = 'b',\u2028c = 'd',\ne = 'f'\u2028",
 263             errors: [
 264                 {
 265                     messageId: "noIrregularWhitespace",
 266                     type: "Program",
 267                     line: 1,
 268                     column: 13
 269                 },
 270                 {
 271                     messageId: "noIrregularWhitespace",
 272                     type: "Program",
 273                     line: 3,
 274                     column: 8
 275                 }
 276             ]
 277         },
 278         {
 279             code: "var any \u3000 = 'thing', other \u3000 = 'thing';\nvar third \u3000 = 'thing';",
 280             errors: [
 281                 {
 282                     messageId: "noIrregularWhitespace",
 283                     type: "Program",
 284                     line: 1,
 285                     column: 9
 286                 },
 287                 {
 288                     messageId: "noIrregularWhitespace",
 289                     type: "Program",
 290                     line: 1,
 291                     column: 28
 292                 },
 293                 {
 294                     messageId: "noIrregularWhitespace",
 295                     type: "Program",
 296                     line: 2,
 297                     column: 11
 298                 }
 299             ]
 300         },
 301         {
 302             code: "// \u000B",
 303             errors: expectedCommentErrors
 304         },
 305         {
 306             code: "// \u000C",
 307             errors: expectedCommentErrors
 308         },
 309         {
 310             code: "// \u0085",
 311             errors: expectedCommentErrors
 312         },
 313         {
 314             code: "// \u00A0",
 315             errors: expectedCommentErrors
 316         },
 317         {
 318             code: "// \u180E",
 319             errors: expectedCommentErrors
 320         },
 321         {
 322             code: "// \ufeff",
 323             errors: expectedCommentErrors
 324         },
 325         {
 326             code: "// \u2000",
 327             errors: expectedCommentErrors
 328         },
 329         {
 330             code: "// \u2001",
 331             errors: expectedCommentErrors
 332         },
 333         {
 334             code: "// \u2002",
 335             errors: expectedCommentErrors
 336         },
 337         {
 338             code: "// \u2003",
 339             errors: expectedCommentErrors
 340         },
 341         {
 342             code: "// \u2004",
 343             errors: expectedCommentErrors
 344         },
 345         {
 346             code: "// \u2005",
 347             errors: expectedCommentErrors
 348         },
 349         {
 350             code: "// \u2006",
 351             errors: expectedCommentErrors
 352         },
 353         {
 354             code: "// \u2007",
 355             errors: expectedCommentErrors
 356         },
 357         {
 358             code: "// \u2008",
 359             errors: expectedCommentErrors
 360         },
 361         {
 362             code: "// \u2009",
 363             errors: expectedCommentErrors
 364         },
 365         {
 366             code: "// \u200A",
 367             errors: expectedCommentErrors
 368         },
 369         {
 370             code: "// \u200B",
 371             errors: expectedCommentErrors
 372         },
 373         {
 374             code: "// \u202F",
 375             errors: expectedCommentErrors
 376         },
 377         {
 378             code: "// \u205f",
 379             errors: expectedCommentErrors
 380         },
 381         {
 382             code: "// \u3000",
 383             errors: expectedCommentErrors
 384         },
 385         {
 386             code: "/* \u000B */",
 387             errors: expectedCommentErrors
 388         },
 389         {
 390             code: "/* \u000C */",
 391             errors: expectedCommentErrors
 392         },
 393         {
 394             code: "/* \u0085 */",
 395             errors: expectedCommentErrors
 396         },
 397         {
 398             code: "/* \u00A0 */",
 399             errors: expectedCommentErrors
 400         },
 401         {
 402             code: "/* \u180E */",
 403             errors: expectedCommentErrors
 404         },
 405         {
 406             code: "/* \ufeff */",
 407             errors: expectedCommentErrors
 408         },
 409         {
 410             code: "/* \u2000 */",
 411             errors: expectedCommentErrors
 412         },
 413         {
 414             code: "/* \u2001 */",
 415             errors: expectedCommentErrors
 416         },
 417         {
 418             code: "/* \u2002 */",
 419             errors: expectedCommentErrors
 420         },
 421         {
 422             code: "/* \u2003 */",
 423             errors: expectedCommentErrors
 424         },
 425         {
 426             code: "/* \u2004 */",
 427             errors: expectedCommentErrors
 428         },
 429         {
 430             code: "/* \u2005 */",
 431             errors: expectedCommentErrors
 432         },
 433         {
 434             code: "/* \u2006 */",
 435             errors: expectedCommentErrors
 436         },
 437         {
 438             code: "/* \u2007 */",
 439             errors: expectedCommentErrors
 440         },
 441         {
 442             code: "/* \u2008 */",
 443             errors: expectedCommentErrors
 444         },
 445         {
 446             code: "/* \u2009 */",
 447             errors: expectedCommentErrors
 448         },
 449         {
 450             code: "/* \u200A */",
 451             errors: expectedCommentErrors
 452         },
 453         {
 454             code: "/* \u200B */",
 455             errors: expectedCommentErrors
 456         },
 457         {
 458             code: "/* \u2028 */",
 459             errors: expectedCommentErrors
 460         },
 461         {
 462             code: "/* \u2029 */",
 463             errors: expectedCommentErrors
 464         },
 465         {
 466             code: "/* \u202F */",
 467             errors: expectedCommentErrors
 468         },
 469         {
 470             code: "/* \u205f */",
 471             errors: expectedCommentErrors
 472         },
 473         {
 474             code: "/* \u3000 */",
 475             errors: expectedCommentErrors
 476         },
 477         {
 478             code: "var any = /\u3000/, other = /\u000B/;",
 479             errors: [
 480                 {
 481                     messageId: "noIrregularWhitespace",
 482                     type: "Program",
 483                     line: 1,
 484                     column: 12
 485                 },
 486                 {
 487                     messageId: "noIrregularWhitespace",
 488                     type: "Program",
 489                     line: 1,
 490                     column: 25
 491                 }
 492             ]
 493         },
 494         {
 495             code: "var any = '\u3000', other = '\u000B';",
 496             options: [{ skipStrings: false }],
 497             errors: [
 498                 {
 499                     messageId: "noIrregularWhitespace",
 500                     type: "Program",
 501                     line: 1,
 502                     column: 12
 503                 },
 504                 {
 505                     messageId: "noIrregularWhitespace",
 506                     type: "Program",
 507                     line: 1,
 508                     column: 25
 509                 }
 510             ]
 511         },
 512         {
 513             code: "var any = `\u3000`, other = `\u000B`;",
 514             options: [{ skipTemplates: false }],
 515             parserOptions: { ecmaVersion: 6 },
 516             errors: [
 517                 {
 518                     messageId: "noIrregularWhitespace",
 519                     type: "Program",
 520                     line: 1,
 521                     column: 12
 522                 },
 523                 {
 524                     messageId: "noIrregularWhitespace",
 525                     type: "Program",
 526                     line: 1,
 527                     column: 25
 528                 }
 529             ]
 530         },
 531         {
 532             code: "`something ${\u3000 10} another thing`",
 533             options: [{ skipTemplates: true }],
 534             parserOptions: { ecmaVersion: 6 },
 535             errors: [
 536                 {
 537                     messageId: "noIrregularWhitespace",
 538                     type: "Program",
 539                     line: 1,
 540                     column: 14
 541                 }
 542             ]
 543         }
 544     ]
 545 });