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| 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | |
| 2 // for details. All rights reserved. Use of this source code is governed by a | |
| 3 // BSD-style license that can be found in the LICENSE file. | |
| 4 | |
| 5 #library('args_test'); | |
| 6 | |
| 7 #import('../../../pkg/unittest/unittest.dart'); | |
| 8 #import('../../../lib/args/args.dart'); | |
| 9 | |
| 10 main() { | |
| 11 group('ArgParser.addFlag()', () { | |
| 12 test('throws IllegalArgumentException if the flag already exists', () { | |
| 13 var parser = new ArgParser(); | |
| 14 parser.addFlag('foo'); | |
| 15 throwsIllegalArg(() => parser.addFlag('foo')); | |
| 16 }); | |
| 17 | |
| 18 test('throws IllegalArgumentException if the option already exists', () { | |
| 19 var parser = new ArgParser(); | |
| 20 parser.addOption('foo'); | |
| 21 throwsIllegalArg(() => parser.addFlag('foo')); | |
| 22 }); | |
| 23 | |
| 24 test('throws IllegalArgumentException if the abbreviation exists', () { | |
| 25 var parser = new ArgParser(); | |
| 26 parser.addFlag('foo', abbr: 'f'); | |
| 27 throwsIllegalArg(() => parser.addFlag('flummox', abbr: 'f')); | |
| 28 }); | |
| 29 | |
| 30 test('throws IllegalArgumentException if the abbreviation is longer ' | |
| 31 'than one character', () { | |
| 32 var parser = new ArgParser(); | |
| 33 throwsIllegalArg(() => parser.addFlag('flummox', abbr: 'flu')); | |
| 34 }); | |
| 35 }); | |
| 36 | |
| 37 group('ArgParser.addOption()', () { | |
| 38 test('throws IllegalArgumentException if the flag already exists', () { | |
| 39 var parser = new ArgParser(); | |
| 40 parser.addFlag('foo'); | |
| 41 throwsIllegalArg(() => parser.addOption('foo')); | |
| 42 }); | |
| 43 | |
| 44 test('throws IllegalArgumentException if the option already exists', () { | |
| 45 var parser = new ArgParser(); | |
| 46 parser.addOption('foo'); | |
| 47 throwsIllegalArg(() => parser.addOption('foo')); | |
| 48 }); | |
| 49 | |
| 50 test('throws IllegalArgumentException if the abbreviation exists', () { | |
| 51 var parser = new ArgParser(); | |
| 52 parser.addFlag('foo', abbr: 'f'); | |
| 53 throwsIllegalArg(() => parser.addOption('flummox', abbr: 'f')); | |
| 54 }); | |
| 55 | |
| 56 test('throws IllegalArgumentException if the abbreviation is longer ' | |
| 57 'than one character', () { | |
| 58 var parser = new ArgParser(); | |
| 59 throwsIllegalArg(() => parser.addOption('flummox', abbr: 'flu')); | |
| 60 }); | |
| 61 }); | |
| 62 | |
| 63 group('ArgParser.parse()', () { | |
| 64 group('flags', () { | |
| 65 test('are true if present', () { | |
| 66 var parser = new ArgParser(); | |
| 67 parser.addFlag('verbose'); | |
| 68 | |
| 69 var args = parser.parse(['--verbose']); | |
| 70 expect(args['verbose'], isTrue); | |
| 71 }); | |
| 72 | |
| 73 test('default if missing', () { | |
| 74 var parser = new ArgParser(); | |
| 75 parser.addFlag('a', defaultsTo: true); | |
| 76 parser.addFlag('b', defaultsTo: false); | |
| 77 | |
| 78 var args = parser.parse([]); | |
| 79 expect(args['a'], isTrue); | |
| 80 expect(args['b'], isFalse); | |
| 81 }); | |
| 82 | |
| 83 test('are false if missing with no default', () { | |
| 84 var parser = new ArgParser(); | |
| 85 parser.addFlag('verbose'); | |
| 86 | |
| 87 var args = parser.parse([]); | |
| 88 expect(args['verbose'], isFalse); | |
| 89 }); | |
| 90 | |
| 91 test('throws if given a value', () { | |
| 92 var parser = new ArgParser(); | |
| 93 parser.addFlag('verbose'); | |
| 94 | |
| 95 throwsFormat(parser, ['--verbose=true']); | |
| 96 }); | |
| 97 }); | |
| 98 | |
| 99 group('flags negated with "no-"', () { | |
| 100 test('set the flag to false', () { | |
| 101 var parser = new ArgParser(); | |
| 102 parser.addFlag('verbose'); | |
| 103 | |
| 104 var args = parser.parse(['--no-verbose']); | |
| 105 expect(args['verbose'], isFalse); | |
| 106 }); | |
| 107 | |
| 108 test('set the flag to true if the flag actually starts with "no-"', () { | |
| 109 var parser = new ArgParser(); | |
| 110 parser.addFlag('no-body'); | |
| 111 | |
| 112 var args = parser.parse(['--no-body']); | |
| 113 expect(args['no-body'], isTrue); | |
| 114 }); | |
| 115 | |
| 116 test('are not preferred over a colliding one without', () { | |
| 117 var parser = new ArgParser(); | |
| 118 parser.addFlag('no-strum'); | |
| 119 parser.addFlag('strum'); | |
| 120 | |
| 121 var args = parser.parse(['--no-strum']); | |
| 122 expect(args['no-strum'], isTrue); | |
| 123 expect(args['strum'], isFalse); | |
| 124 }); | |
| 125 | |
| 126 test('fail for non-negatable flags', () { | |
| 127 var parser = new ArgParser(); | |
| 128 parser.addFlag('strum', negatable: false); | |
| 129 | |
| 130 throwsFormat(parser, ['--no-strum']); | |
| 131 }); | |
| 132 }); | |
| 133 | |
| 134 group('callbacks', () { | |
| 135 test('for present flags are invoked with the value', () { | |
| 136 var a; | |
| 137 var parser = new ArgParser(); | |
| 138 parser.addFlag('a', callback: (value) => a = value); | |
| 139 | |
| 140 var args = parser.parse(['--a']); | |
| 141 expect(a, isTrue); | |
| 142 }); | |
| 143 | |
| 144 test('for absent flags are invoked with the default value', () { | |
| 145 var a; | |
| 146 var parser = new ArgParser(); | |
| 147 parser.addFlag('a', defaultsTo: false, | |
| 148 callback: (value) => a = value); | |
| 149 | |
| 150 var args = parser.parse([]); | |
| 151 expect(a, isFalse); | |
| 152 }); | |
| 153 | |
| 154 test('are invoked even if the flag is not present', () { | |
| 155 var a = 'not called'; | |
| 156 var parser = new ArgParser(); | |
| 157 parser.addFlag('a', callback: (value) => a = value); | |
| 158 | |
| 159 var args = parser.parse([]); | |
| 160 expect(a, isFalse); | |
| 161 }); | |
| 162 | |
| 163 test('for present options are invoked with the value', () { | |
| 164 var a; | |
| 165 var parser = new ArgParser(); | |
| 166 parser.addOption('a', callback: (value) => a = value); | |
| 167 | |
| 168 var args = parser.parse(['--a=v']); | |
| 169 expect(a, equals('v')); | |
| 170 }); | |
| 171 | |
| 172 test('for absent options are invoked with the default value', () { | |
| 173 var a; | |
| 174 var parser = new ArgParser(); | |
| 175 parser.addOption('a', defaultsTo: 'v', | |
| 176 callback: (value) => a = value); | |
| 177 | |
| 178 var args = parser.parse([]); | |
| 179 expect(a, equals('v')); | |
| 180 }); | |
| 181 | |
| 182 test('are invoked even if the option is not present', () { | |
| 183 var a = 'not called'; | |
| 184 var parser = new ArgParser(); | |
| 185 parser.addOption('a', callback: (value) => a = value); | |
| 186 | |
| 187 var args = parser.parse([]); | |
| 188 expect(a, isNull); | |
| 189 }); | |
| 190 }); | |
| 191 | |
| 192 group('abbreviations', () { | |
| 193 test('are parsed with a preceding "-"', () { | |
| 194 var parser = new ArgParser(); | |
| 195 parser.addFlag('arg', abbr: 'a'); | |
| 196 | |
| 197 var args = parser.parse(['-a']); | |
| 198 expect(args['arg'], isTrue); | |
| 199 }); | |
| 200 | |
| 201 test('can use multiple after a single "-"', () { | |
| 202 var parser = new ArgParser(); | |
| 203 parser.addFlag('first', abbr: 'f'); | |
| 204 parser.addFlag('second', abbr: 's'); | |
| 205 parser.addFlag('third', abbr: 't'); | |
| 206 | |
| 207 var args = parser.parse(['-tf']); | |
| 208 expect(args['first'], isTrue); | |
| 209 expect(args['second'], isFalse); | |
| 210 expect(args['third'], isTrue); | |
| 211 }); | |
| 212 | |
| 213 test('can have multiple "-" args', () { | |
| 214 var parser = new ArgParser(); | |
| 215 parser.addFlag('first', abbr: 'f'); | |
| 216 parser.addFlag('second', abbr: 's'); | |
| 217 parser.addFlag('third', abbr: 't'); | |
| 218 | |
| 219 var args = parser.parse(['-s', '-tf']); | |
| 220 expect(args['first'], isTrue); | |
| 221 expect(args['second'], isTrue); | |
| 222 expect(args['third'], isTrue); | |
| 223 }); | |
| 224 | |
| 225 test('can take arguments without a space separating', () { | |
| 226 var parser = new ArgParser(); | |
| 227 parser.addOption('file', abbr: 'f'); | |
| 228 | |
| 229 var args = parser.parse(['-flip']); | |
| 230 expect(args['file'], equals('lip')); | |
| 231 }); | |
| 232 | |
| 233 test('can take arguments with a space separating', () { | |
| 234 var parser = new ArgParser(); | |
| 235 parser.addOption('file', abbr: 'f'); | |
| 236 | |
| 237 var args = parser.parse(['-f', 'name']); | |
| 238 expect(args['file'], equals('name')); | |
| 239 }); | |
| 240 | |
| 241 test('allow non-option characters in the value', () { | |
| 242 var parser = new ArgParser(); | |
| 243 parser.addOption('apple', abbr: 'a'); | |
| 244 | |
| 245 var args = parser.parse(['-ab?!c']); | |
| 246 expect(args['apple'], equals('b?!c')); | |
| 247 }); | |
| 248 | |
| 249 test('throw if unknown', () { | |
| 250 var parser = new ArgParser(); | |
| 251 throwsFormat(parser, ['-f']); | |
| 252 }); | |
| 253 | |
| 254 test('throw if the value is missing', () { | |
| 255 var parser = new ArgParser(); | |
| 256 parser.addOption('file', abbr: 'f'); | |
| 257 | |
| 258 throwsFormat(parser, ['-f']); | |
| 259 }); | |
| 260 | |
| 261 test('throw if the value looks like an option', () { | |
| 262 var parser = new ArgParser(); | |
| 263 parser.addOption('file', abbr: 'f'); | |
| 264 parser.addOption('other'); | |
| 265 | |
| 266 throwsFormat(parser, ['-f', '--other']); | |
| 267 throwsFormat(parser, ['-f', '--unknown']); | |
| 268 throwsFormat(parser, ['-f', '-abbr']); | |
| 269 }); | |
| 270 | |
| 271 test('throw if the value is not allowed', () { | |
| 272 var parser = new ArgParser(); | |
| 273 parser.addOption('mode', abbr: 'm', allowed: ['debug', 'release']); | |
| 274 | |
| 275 throwsFormat(parser, ['-mprofile']); | |
| 276 }); | |
| 277 | |
| 278 test('throw if any but the first is not a flag', () { | |
| 279 var parser = new ArgParser(); | |
| 280 parser.addFlag('apple', abbr: 'a'); | |
| 281 parser.addOption('banana', abbr: 'b'); // Takes an argument. | |
| 282 parser.addFlag('cherry', abbr: 'c'); | |
| 283 | |
| 284 throwsFormat(parser, ['-abc']); | |
| 285 }); | |
| 286 | |
| 287 test('throw if it has a value but the option is a flag', () { | |
| 288 var parser = new ArgParser(); | |
| 289 parser.addFlag('apple', abbr: 'a'); | |
| 290 parser.addFlag('banana', abbr: 'b'); | |
| 291 | |
| 292 // The '?!' means this can only be understood as '--apple b?!c'. | |
| 293 throwsFormat(parser, ['-ab?!c']); | |
| 294 }); | |
| 295 }); | |
| 296 | |
| 297 group('options', () { | |
| 298 test('are parsed if present', () { | |
| 299 var parser = new ArgParser(); | |
| 300 parser.addOption('mode'); | |
| 301 var args = parser.parse(['--mode=release']); | |
| 302 expect(args['mode'], equals('release')); | |
| 303 }); | |
| 304 | |
| 305 test('are null if not present', () { | |
| 306 var parser = new ArgParser(); | |
| 307 parser.addOption('mode'); | |
| 308 var args = parser.parse([]); | |
| 309 expect(args['mode'], isNull); | |
| 310 }); | |
| 311 | |
| 312 test('default if missing', () { | |
| 313 var parser = new ArgParser(); | |
| 314 parser.addOption('mode', defaultsTo: 'debug'); | |
| 315 var args = parser.parse([]); | |
| 316 expect(args['mode'], equals('debug')); | |
| 317 }); | |
| 318 | |
| 319 test('allow the value to be separated by whitespace', () { | |
| 320 var parser = new ArgParser(); | |
| 321 parser.addOption('mode'); | |
| 322 var args = parser.parse(['--mode', 'release']); | |
| 323 expect(args['mode'], equals('release')); | |
| 324 }); | |
| 325 | |
| 326 test('throw if unknown', () { | |
| 327 var parser = new ArgParser(); | |
| 328 throwsFormat(parser, ['--unknown']); | |
| 329 throwsFormat(parser, ['--nobody']); // Starts with "no". | |
| 330 }); | |
| 331 | |
| 332 test('throw if the arg does not include a value', () { | |
| 333 var parser = new ArgParser(); | |
| 334 parser.addOption('mode'); | |
| 335 throwsFormat(parser, ['--mode']); | |
| 336 }); | |
| 337 | |
| 338 test('throw if the value looks like an option', () { | |
| 339 var parser = new ArgParser(); | |
| 340 parser.addOption('mode'); | |
| 341 parser.addOption('other'); | |
| 342 | |
| 343 throwsFormat(parser, ['--mode', '--other']); | |
| 344 throwsFormat(parser, ['--mode', '--unknown']); | |
| 345 throwsFormat(parser, ['--mode', '-abbr']); | |
| 346 }); | |
| 347 | |
| 348 test('do not throw if the value is in the allowed set', () { | |
| 349 var parser = new ArgParser(); | |
| 350 parser.addOption('mode', allowed: ['debug', 'release']); | |
| 351 var args = parser.parse(['--mode=debug']); | |
| 352 expect(args['mode'], equals('debug')); | |
| 353 }); | |
| 354 | |
| 355 test('throw if the value is not in the allowed set', () { | |
| 356 var parser = new ArgParser(); | |
| 357 parser.addOption('mode', allowed: ['debug', 'release']); | |
| 358 throwsFormat(parser, ['--mode=profile']); | |
| 359 }); | |
| 360 | |
| 361 test('returns last provided value', () { | |
| 362 var parser = new ArgParser(); | |
| 363 parser.addOption('define'); | |
| 364 var args = parser.parse(['--define=1', '--define=2']); | |
| 365 expect(args['define'], equals('2')); | |
| 366 }); | |
| 367 | |
| 368 test('returns a List if multi-valued', () { | |
| 369 var parser = new ArgParser(); | |
| 370 parser.addOption('define', allowMultiple: true); | |
| 371 var args = parser.parse(['--define=1']); | |
| 372 expect(args['define'], equals(['1'])); | |
| 373 args = parser.parse(['--define=1', '--define=2']); | |
| 374 expect(args['define'], equals(['1','2'])); | |
| 375 }); | |
| 376 | |
| 377 test('returns the default value for multi-valued arguments ' | |
| 378 'if not explicitly set', () { | |
| 379 var parser = new ArgParser(); | |
| 380 parser.addOption('define', defaultsTo: '0', allowMultiple: true); | |
| 381 var args = parser.parse(['']); | |
| 382 expect(args['define'], equals(['0'])); | |
| 383 }); | |
| 384 }); | |
| 385 | |
| 386 group('query default values', () { | |
| 387 test('queries the default value', () { | |
| 388 var parser = new ArgParser(); | |
| 389 parser.addOption('define', defaultsTo: '0'); | |
| 390 expect(()=>parser.getDefault('undefine'), | |
| 391 throwsIllegalArgumentException); | |
| 392 }); | |
| 393 | |
| 394 test('queries the default value for an unknown option', () { | |
| 395 var parser = new ArgParser(); | |
| 396 parser.addOption('define', defaultsTo: '0'); | |
| 397 expect(()=>parser.getDefault('undefine'), | |
| 398 throwsIllegalArgumentException); | |
| 399 }); | |
| 400 }); | |
| 401 | |
| 402 group('gets the option names from an ArgsResult', () { | |
| 403 test('queries the set options', () { | |
| 404 var parser = new ArgParser(); | |
| 405 parser.addFlag('woof', defaultsTo: false); | |
| 406 parser.addOption('meow', defaultsTo: 'kitty'); | |
| 407 var args = parser.parse([]); | |
| 408 expect(args.options, hasLength(2)); | |
| 409 expect(args.options.some((o) => o == 'woof'), isTrue); | |
| 410 expect(args.options.some((o) => o == 'meow'), isTrue); | |
| 411 }); | |
| 412 }); | |
| 413 | |
| 414 group('remaining args', () { | |
| 415 test('stops parsing args when a non-option-like arg is encountered', () { | |
| 416 var parser = new ArgParser(); | |
| 417 parser.addFlag('woof'); | |
| 418 parser.addOption('meow'); | |
| 419 parser.addOption('tweet', defaultsTo: 'bird'); | |
| 420 | |
| 421 var results = parser.parse(['--woof', '--meow', 'v', 'not', 'option']); | |
| 422 expect(results['woof'], isTrue); | |
| 423 expect(results['meow'], equals('v')); | |
| 424 expect(results['tweet'], equals('bird')); | |
| 425 expect(results.rest, orderedEquals(['not', 'option'])); | |
| 426 }); | |
| 427 | |
| 428 test('stops parsing at "--"', () { | |
| 429 var parser = new ArgParser(); | |
| 430 parser.addFlag('woof', defaultsTo: false); | |
| 431 parser.addOption('meow', defaultsTo: 'kitty'); | |
| 432 | |
| 433 var results = parser.parse(['--woof', '--', '--meow']); | |
| 434 expect(results['woof'], isTrue); | |
| 435 expect(results['meow'], equals('kitty')); | |
| 436 expect(results.rest, orderedEquals(['--meow'])); | |
| 437 }); | |
| 438 | |
| 439 test('handles options with case-sensitivity', () { | |
| 440 var parser = new ArgParser(); | |
| 441 parser.addFlag('recurse', defaultsTo: false, abbr:'R'); | |
| 442 var results = parser.parse(['-R']); | |
| 443 expect(results['recurse'], isTrue); | |
| 444 expect(results.rest, [ ]); | |
| 445 throwsFormat(parser, ['-r']); | |
| 446 }); | |
| 447 }); | |
| 448 }); | |
| 449 | |
| 450 group('ArgParser.getUsage()', () { | |
| 451 test('negatable flags show "no-" in title', () { | |
| 452 var parser = new ArgParser(); | |
| 453 parser.addFlag('mode', help: 'The mode'); | |
| 454 | |
| 455 validateUsage(parser, | |
| 456 ''' | |
| 457 --[no-]mode The mode | |
| 458 '''); | |
| 459 }); | |
| 460 | |
| 461 test('non-negatable flags don\'t show "no-" in title', () { | |
| 462 var parser = new ArgParser(); | |
| 463 parser.addFlag('mode', negatable: false, help: 'The mode'); | |
| 464 | |
| 465 validateUsage(parser, | |
| 466 ''' | |
| 467 --mode The mode | |
| 468 '''); | |
| 469 }); | |
| 470 | |
| 471 test('if there are no abbreviations, there is no column for them', () { | |
| 472 var parser = new ArgParser(); | |
| 473 parser.addFlag('mode', help: 'The mode'); | |
| 474 | |
| 475 validateUsage(parser, | |
| 476 ''' | |
| 477 --[no-]mode The mode | |
| 478 '''); | |
| 479 }); | |
| 480 | |
| 481 test('options are lined up past abbreviations', () { | |
| 482 var parser = new ArgParser(); | |
| 483 parser.addFlag('mode', abbr: 'm', help: 'The mode'); | |
| 484 parser.addOption('long', help: 'Lacks an abbreviation'); | |
| 485 | |
| 486 validateUsage(parser, | |
| 487 ''' | |
| 488 -m, --[no-]mode The mode | |
| 489 --long Lacks an abbreviation | |
| 490 '''); | |
| 491 }); | |
| 492 | |
| 493 test('help text is lined up past the longest option', () { | |
| 494 var parser = new ArgParser(); | |
| 495 parser.addFlag('mode', abbr: 'm', help: 'Lined up with below'); | |
| 496 parser.addOption('a-really-long-name', help: 'Its help text'); | |
| 497 | |
| 498 validateUsage(parser, | |
| 499 ''' | |
| 500 -m, --[no-]mode Lined up with below | |
| 501 --a-really-long-name Its help text | |
| 502 '''); | |
| 503 }); | |
| 504 | |
| 505 test('leading empty lines are ignored in help text', () { | |
| 506 var parser = new ArgParser(); | |
| 507 parser.addFlag('mode', help: '\n\n\n\nAfter newlines'); | |
| 508 | |
| 509 validateUsage(parser, | |
| 510 ''' | |
| 511 --[no-]mode After newlines | |
| 512 '''); | |
| 513 }); | |
| 514 | |
| 515 test('trailing empty lines are ignored in help text', () { | |
| 516 var parser = new ArgParser(); | |
| 517 parser.addFlag('mode', help: 'Before newlines\n\n\n\n'); | |
| 518 | |
| 519 validateUsage(parser, | |
| 520 ''' | |
| 521 --[no-]mode Before newlines | |
| 522 '''); | |
| 523 }); | |
| 524 | |
| 525 test('options are documented in the order they were added', () { | |
| 526 var parser = new ArgParser(); | |
| 527 parser.addFlag('zebra', help: 'First'); | |
| 528 parser.addFlag('monkey', help: 'Second'); | |
| 529 parser.addFlag('wombat', help: 'Third'); | |
| 530 | |
| 531 validateUsage(parser, | |
| 532 ''' | |
| 533 --[no-]zebra First | |
| 534 --[no-]monkey Second | |
| 535 --[no-]wombat Third | |
| 536 '''); | |
| 537 }); | |
| 538 | |
| 539 test('the default value for a flag is shown if on', () { | |
| 540 var parser = new ArgParser(); | |
| 541 parser.addFlag('affirm', help: 'Should be on', defaultsTo: true); | |
| 542 parser.addFlag('negate', help: 'Should be off', defaultsTo: false); | |
| 543 | |
| 544 validateUsage(parser, | |
| 545 ''' | |
| 546 --[no-]affirm Should be on | |
| 547 (defaults to on) | |
| 548 | |
| 549 --[no-]negate Should be off | |
| 550 '''); | |
| 551 }); | |
| 552 | |
| 553 test('the default value for an option with no allowed list is shown', () { | |
| 554 var parser = new ArgParser(); | |
| 555 parser.addOption('any', help: 'Can be anything', defaultsTo: 'whatevs'); | |
| 556 | |
| 557 validateUsage(parser, | |
| 558 ''' | |
| 559 --any Can be anything | |
| 560 (defaults to "whatevs") | |
| 561 '''); | |
| 562 }); | |
| 563 | |
| 564 test('the allowed list is shown', () { | |
| 565 var parser = new ArgParser(); | |
| 566 parser.addOption('suit', help: 'Like in cards', | |
| 567 allowed: ['spades', 'clubs', 'hearts', 'diamonds']); | |
| 568 | |
| 569 validateUsage(parser, | |
| 570 ''' | |
| 571 --suit Like in cards | |
| 572 [spades, clubs, hearts, diamonds] | |
| 573 '''); | |
| 574 }); | |
| 575 | |
| 576 test('the default is highlighted in the allowed list', () { | |
| 577 var parser = new ArgParser(); | |
| 578 parser.addOption('suit', help: 'Like in cards', defaultsTo: 'clubs', | |
| 579 allowed: ['spades', 'clubs', 'hearts', 'diamonds']); | |
| 580 | |
| 581 validateUsage(parser, | |
| 582 ''' | |
| 583 --suit Like in cards | |
| 584 [spades, clubs (default), hearts, diamonds] | |
| 585 '''); | |
| 586 }); | |
| 587 | |
| 588 test('the allowed help is shown', () { | |
| 589 var parser = new ArgParser(); | |
| 590 parser.addOption('suit', help: 'Like in cards', defaultsTo: 'clubs', | |
| 591 allowed: ['spades', 'clubs', 'diamonds', 'hearts'], | |
| 592 allowedHelp: { | |
| 593 'spades': 'Swords of a soldier', | |
| 594 'clubs': 'Weapons of war', | |
| 595 'diamonds': 'Money for this art', | |
| 596 'hearts': 'The shape of my heart' | |
| 597 }); | |
| 598 | |
| 599 validateUsage(parser, | |
| 600 ''' | |
| 601 --suit Like in cards | |
| 602 | |
| 603 [clubs] Weapons of war | |
| 604 [diamonds] Money for this art | |
| 605 [hearts] The shape of my heart | |
| 606 [spades] Swords of a soldier | |
| 607 '''); | |
| 608 }); | |
| 609 }); | |
| 610 | |
| 611 group('ArgResults[]', () { | |
| 612 test('throws if the name is not an option', () { | |
| 613 var parser = new ArgParser(); | |
| 614 var results = parser.parse([]); | |
| 615 throwsIllegalArg(() => results['unknown']); | |
| 616 }); | |
| 617 }); | |
| 618 } | |
| 619 | |
| 620 throwsIllegalArg(function) { | |
| 621 expect(function, throwsIllegalArgumentException); | |
| 622 } | |
| 623 | |
| 624 throwsFormat(ArgParser parser, List<String> args) { | |
| 625 expect(() => parser.parse(args), throwsFormatException); | |
| 626 } | |
| 627 | |
| 628 validateUsage(ArgParser parser, String expected) { | |
| 629 expected = unindentString(expected); | |
| 630 expect(parser.getUsage(), equals(expected)); | |
| 631 } | |
| 632 | |
| 633 // TODO(rnystrom): Replace one in test_utils. | |
| 634 String unindentString(String text) { | |
| 635 var lines = text.split('\n'); | |
| 636 | |
| 637 // Count the indentation of the last line. | |
| 638 var whitespace = const RegExp('^ *'); | |
| 639 var indent = whitespace.firstMatch(lines[lines.length - 1])[0].length; | |
| 640 | |
| 641 // Drop the last line. It only exists for specifying indentation. | |
| 642 lines.removeLast(); | |
| 643 | |
| 644 // Strip indentation from the remaining lines. | |
| 645 for (var i = 0; i < lines.length; i++) { | |
| 646 var line = lines[i]; | |
| 647 if (line.length <= indent) { | |
| 648 // It's short, so it must be nothing but whitespace. | |
| 649 if (line.trim() != '') { | |
| 650 throw new IllegalArgumentException( | |
| 651 'Line "$line" does not have enough indentation.'); | |
| 652 } | |
| 653 | |
| 654 lines[i] = ''; | |
| 655 } else { | |
| 656 if (line.substring(0, indent).trim() != '') { | |
| 657 throw new IllegalArgumentException( | |
| 658 'Line "$line" does not have enough indentation.'); | |
| 659 } | |
| 660 | |
| 661 lines[i] = line.substring(indent); | |
| 662 } | |
| 663 } | |
| 664 | |
| 665 return Strings.join(lines, '\n'); | |
| 666 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 10831371:
Move args from lib/ to pkg/ . (Closed)
Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/