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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 parse_test; | |
| 6 | |
| 7 import 'package:unittest/unittest.dart'; | |
| 8 import 'package:args/args.dart'; | |
| 9 import 'utils.dart'; | |
| 10 | |
| 11 void main() { | |
| 12 group('ArgParser.parse()', () { | |
| 13 test('does not destructively modify the argument list', () { | |
| 14 var parser = new ArgParser(); | |
| 15 parser.addFlag('verbose'); | |
| 16 | |
| 17 var args = ['--verbose']; | |
| 18 var results = parser.parse(args); | |
| 19 expect(args, equals(['--verbose'])); | |
| 20 expect(results['verbose'], isTrue); | |
| 21 }); | |
| 22 | |
| 23 group('flags', () { | |
| 24 test('are true if present', () { | |
| 25 var parser = new ArgParser(); | |
| 26 parser.addFlag('verbose'); | |
| 27 | |
| 28 var args = parser.parse(['--verbose']); | |
| 29 expect(args['verbose'], isTrue); | |
| 30 }); | |
| 31 | |
| 32 test('default if missing', () { | |
| 33 var parser = new ArgParser(); | |
| 34 parser.addFlag('a', defaultsTo: true); | |
| 35 parser.addFlag('b', defaultsTo: false); | |
| 36 | |
| 37 var args = parser.parse([]); | |
| 38 expect(args['a'], isTrue); | |
| 39 expect(args['b'], isFalse); | |
| 40 }); | |
| 41 | |
| 42 test('are false if missing with no default', () { | |
| 43 var parser = new ArgParser(); | |
| 44 parser.addFlag('verbose'); | |
| 45 | |
| 46 var args = parser.parse([]); | |
| 47 expect(args['verbose'], isFalse); | |
| 48 }); | |
| 49 | |
| 50 test('throws if given a value', () { | |
| 51 var parser = new ArgParser(); | |
| 52 parser.addFlag('verbose'); | |
| 53 | |
| 54 throwsFormat(parser, ['--verbose=true']); | |
| 55 }); | |
| 56 | |
| 57 test('are case-sensitive', () { | |
| 58 var parser = new ArgParser(); | |
| 59 parser.addFlag('verbose'); | |
| 60 parser.addFlag('Verbose'); | |
| 61 var results = parser.parse(['--verbose']); | |
| 62 expect(results['verbose'], isTrue); | |
| 63 expect(results['Verbose'], isFalse); | |
| 64 }); | |
| 65 }); | |
| 66 | |
| 67 group('flags negated with "no-"', () { | |
| 68 test('set the flag to false', () { | |
| 69 var parser = new ArgParser(); | |
| 70 parser.addFlag('verbose'); | |
| 71 | |
| 72 var args = parser.parse(['--no-verbose']); | |
| 73 expect(args['verbose'], isFalse); | |
| 74 }); | |
| 75 | |
| 76 test('set the flag to true if the flag actually starts with "no-"', () { | |
| 77 var parser = new ArgParser(); | |
| 78 parser.addFlag('no-body'); | |
| 79 | |
| 80 var args = parser.parse(['--no-body']); | |
| 81 expect(args['no-body'], isTrue); | |
| 82 }); | |
| 83 | |
| 84 test('are not preferred over a colliding one without', () { | |
| 85 var parser = new ArgParser(); | |
| 86 parser.addFlag('no-strum'); | |
| 87 parser.addFlag('strum'); | |
| 88 | |
| 89 var args = parser.parse(['--no-strum']); | |
| 90 expect(args['no-strum'], isTrue); | |
| 91 expect(args['strum'], isFalse); | |
| 92 }); | |
| 93 | |
| 94 test('fail for non-negatable flags', () { | |
| 95 var parser = new ArgParser(); | |
| 96 parser.addFlag('strum', negatable: false); | |
| 97 | |
| 98 throwsFormat(parser, ['--no-strum']); | |
| 99 }); | |
| 100 }); | |
| 101 | |
| 102 group('callbacks', () { | |
| 103 test('for present flags are invoked with the value', () { | |
| 104 var a; | |
| 105 var parser = new ArgParser(); | |
| 106 parser.addFlag('a', callback: (value) => a = value); | |
| 107 | |
| 108 var args = parser.parse(['--a']); | |
| 109 expect(a, isTrue); | |
| 110 }); | |
| 111 | |
| 112 test('for absent flags are invoked with the default value', () { | |
| 113 var a; | |
| 114 var parser = new ArgParser(); | |
| 115 parser.addFlag('a', defaultsTo: false, | |
| 116 callback: (value) => a = value); | |
| 117 | |
| 118 var args = parser.parse([]); | |
| 119 expect(a, isFalse); | |
| 120 }); | |
| 121 | |
| 122 test('are invoked even if the flag is not present', () { | |
| 123 var a = 'not called'; | |
| 124 var parser = new ArgParser(); | |
| 125 parser.addFlag('a', callback: (value) => a = value); | |
| 126 | |
| 127 var args = parser.parse([]); | |
| 128 expect(a, isFalse); | |
| 129 }); | |
| 130 | |
| 131 test('for present options are invoked with the value', () { | |
| 132 var a; | |
| 133 var parser = new ArgParser(); | |
| 134 parser.addOption('a', callback: (value) => a = value); | |
| 135 | |
| 136 var args = parser.parse(['--a=v']); | |
| 137 expect(a, equals('v')); | |
| 138 }); | |
| 139 | |
| 140 test('for absent options are invoked with the default value', () { | |
| 141 var a; | |
| 142 var parser = new ArgParser(); | |
| 143 parser.addOption('a', defaultsTo: 'v', | |
| 144 callback: (value) => a = value); | |
| 145 | |
| 146 var args = parser.parse([]); | |
| 147 expect(a, equals('v')); | |
| 148 }); | |
| 149 | |
| 150 test('are invoked even if the option is not present', () { | |
| 151 var a = 'not called'; | |
| 152 var parser = new ArgParser(); | |
| 153 parser.addOption('a', callback: (value) => a = value); | |
| 154 | |
| 155 var args = parser.parse([]); | |
| 156 expect(a, isNull); | |
| 157 }); | |
| 158 | |
| 159 test('for multiple present, allowMultiple, options are invoked with ' | |
| 160 'value as a list', () { | |
| 161 var a; | |
| 162 var parser = new ArgParser(); | |
| 163 parser.addOption('a', allowMultiple: true, | |
| 164 callback: (value) => a = value); | |
| 165 | |
| 166 var args = parser.parse(['--a=v', '--a=x']); | |
| 167 expect(a, equals(['v', 'x'])); | |
| 168 }); | |
| 169 | |
| 170 test('for single present, allowMultiple, options are invoked with ' | |
| 171 ' value as a single element list', () { | |
| 172 var a; | |
| 173 var parser = new ArgParser(); | |
| 174 parser.addOption('a', allowMultiple: true, | |
| 175 callback: (value) => a = value); | |
| 176 | |
| 177 var args = parser.parse(['--a=v']); | |
| 178 expect(a, equals(['v'])); | |
| 179 }); | |
| 180 | |
| 181 test('for absent, allowMultiple, options are invoked with default ' | |
| 182 'value as a list.', () { | |
| 183 var a; | |
| 184 var parser = new ArgParser(); | |
| 185 parser.addOption('a', allowMultiple: true, defaultsTo: 'v', | |
| 186 callback: (value) => a = value); | |
| 187 | |
| 188 var args = parser.parse([]); | |
| 189 expect(a, equals(['v'])); | |
| 190 }); | |
| 191 | |
| 192 test('for absent, allowMultiple, options are invoked with value ' | |
| 193 'as an empty list.', () { | |
| 194 var a; | |
| 195 var parser = new ArgParser(); | |
| 196 parser.addOption('a', allowMultiple: true, | |
| 197 callback: (value) => a = value); | |
| 198 | |
| 199 var args = parser.parse([]); | |
| 200 expect(a, isEmpty); | |
| 201 }); | |
| 202 }); | |
| 203 | |
| 204 group('abbreviations', () { | |
| 205 test('are parsed with a preceding "-"', () { | |
| 206 var parser = new ArgParser(); | |
| 207 parser.addFlag('arg', abbr: 'a'); | |
| 208 | |
| 209 var args = parser.parse(['-a']); | |
| 210 expect(args['arg'], isTrue); | |
| 211 }); | |
| 212 | |
| 213 test('can use multiple after a single "-"', () { | |
| 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(['-tf']); | |
| 220 expect(args['first'], isTrue); | |
| 221 expect(args['second'], isFalse); | |
| 222 expect(args['third'], isTrue); | |
| 223 }); | |
| 224 | |
| 225 test('can have multiple "-" args', () { | |
| 226 var parser = new ArgParser(); | |
| 227 parser.addFlag('first', abbr: 'f'); | |
| 228 parser.addFlag('second', abbr: 's'); | |
| 229 parser.addFlag('third', abbr: 't'); | |
| 230 | |
| 231 var args = parser.parse(['-s', '-tf']); | |
| 232 expect(args['first'], isTrue); | |
| 233 expect(args['second'], isTrue); | |
| 234 expect(args['third'], isTrue); | |
| 235 }); | |
| 236 | |
| 237 test('can take arguments without a space separating', () { | |
| 238 var parser = new ArgParser(); | |
| 239 parser.addOption('file', abbr: 'f'); | |
| 240 | |
| 241 var args = parser.parse(['-flip']); | |
| 242 expect(args['file'], equals('lip')); | |
| 243 }); | |
| 244 | |
| 245 test('can take arguments with a space separating', () { | |
| 246 var parser = new ArgParser(); | |
| 247 parser.addOption('file', abbr: 'f'); | |
| 248 | |
| 249 var args = parser.parse(['-f', 'name']); | |
| 250 expect(args['file'], equals('name')); | |
| 251 }); | |
| 252 | |
| 253 test('allow non-option characters in the value', () { | |
| 254 var parser = new ArgParser(); | |
| 255 parser.addOption('apple', abbr: 'a'); | |
| 256 | |
| 257 var args = parser.parse(['-ab?!c']); | |
| 258 expect(args['apple'], equals('b?!c')); | |
| 259 }); | |
| 260 | |
| 261 test('throw if unknown', () { | |
| 262 var parser = new ArgParser(); | |
| 263 throwsFormat(parser, ['-f']); | |
| 264 }); | |
| 265 | |
| 266 test('throw if the value is missing', () { | |
| 267 var parser = new ArgParser(); | |
| 268 parser.addOption('file', abbr: 'f'); | |
| 269 | |
| 270 throwsFormat(parser, ['-f']); | |
| 271 }); | |
| 272 | |
| 273 test('throw if the value looks like an option', () { | |
| 274 var parser = new ArgParser(); | |
| 275 parser.addOption('file', abbr: 'f'); | |
| 276 parser.addOption('other'); | |
| 277 | |
| 278 throwsFormat(parser, ['-f', '--other']); | |
| 279 throwsFormat(parser, ['-f', '--unknown']); | |
| 280 throwsFormat(parser, ['-f', '-abbr']); | |
| 281 }); | |
| 282 | |
| 283 test('throw if the value is not allowed', () { | |
| 284 var parser = new ArgParser(); | |
| 285 parser.addOption('mode', abbr: 'm', allowed: ['debug', 'release']); | |
| 286 | |
| 287 throwsFormat(parser, ['-mprofile']); | |
| 288 }); | |
| 289 | |
| 290 test('throw if any but the first is not a flag', () { | |
| 291 var parser = new ArgParser(); | |
| 292 parser.addFlag('apple', abbr: 'a'); | |
| 293 parser.addOption('banana', abbr: 'b'); // Takes an argument. | |
| 294 parser.addFlag('cherry', abbr: 'c'); | |
| 295 | |
| 296 throwsFormat(parser, ['-abc']); | |
| 297 }); | |
| 298 | |
| 299 test('throw if it has a value but the option is a flag', () { | |
| 300 var parser = new ArgParser(); | |
| 301 parser.addFlag('apple', abbr: 'a'); | |
| 302 parser.addFlag('banana', abbr: 'b'); | |
| 303 | |
| 304 // The '?!' means this can only be understood as '--apple b?!c'. | |
| 305 throwsFormat(parser, ['-ab?!c']); | |
| 306 }); | |
| 307 | |
| 308 test('are case-sensitive', () { | |
| 309 var parser = new ArgParser(); | |
| 310 parser.addFlag('file', abbr: 'f'); | |
| 311 parser.addFlag('force', abbr: 'F'); | |
| 312 var results = parser.parse(['-f']); | |
| 313 expect(results['file'], isTrue); | |
| 314 expect(results['force'], isFalse); | |
| 315 }); | |
| 316 }); | |
| 317 | |
| 318 group('options', () { | |
| 319 test('are parsed if present', () { | |
| 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('are null if not present', () { | |
| 327 var parser = new ArgParser(); | |
| 328 parser.addOption('mode'); | |
| 329 var args = parser.parse([]); | |
| 330 expect(args['mode'], isNull); | |
| 331 }); | |
| 332 | |
| 333 test('default if missing', () { | |
| 334 var parser = new ArgParser(); | |
| 335 parser.addOption('mode', defaultsTo: 'debug'); | |
| 336 var args = parser.parse([]); | |
| 337 expect(args['mode'], equals('debug')); | |
| 338 }); | |
| 339 | |
| 340 test('allow the value to be separated by whitespace', () { | |
| 341 var parser = new ArgParser(); | |
| 342 parser.addOption('mode'); | |
| 343 var args = parser.parse(['--mode', 'release']); | |
| 344 expect(args['mode'], equals('release')); | |
| 345 }); | |
| 346 | |
| 347 test('throw if unknown', () { | |
| 348 var parser = new ArgParser(); | |
| 349 throwsFormat(parser, ['--unknown']); | |
| 350 throwsFormat(parser, ['--nobody']); // Starts with "no". | |
| 351 }); | |
| 352 | |
| 353 test('throw if the arg does not include a value', () { | |
| 354 var parser = new ArgParser(); | |
| 355 parser.addOption('mode'); | |
| 356 throwsFormat(parser, ['--mode']); | |
| 357 }); | |
| 358 | |
| 359 test('throw if the value looks like an option', () { | |
| 360 var parser = new ArgParser(); | |
| 361 parser.addOption('mode'); | |
| 362 parser.addOption('other'); | |
| 363 | |
| 364 throwsFormat(parser, ['--mode', '--other']); | |
| 365 throwsFormat(parser, ['--mode', '--unknown']); | |
| 366 throwsFormat(parser, ['--mode', '-abbr']); | |
| 367 }); | |
| 368 | |
| 369 test('do not throw if the value is in the allowed set', () { | |
| 370 var parser = new ArgParser(); | |
| 371 parser.addOption('mode', allowed: ['debug', 'release']); | |
| 372 var args = parser.parse(['--mode=debug']); | |
| 373 expect(args['mode'], equals('debug')); | |
| 374 }); | |
| 375 | |
| 376 test('throw if the value is not in the allowed set', () { | |
| 377 var parser = new ArgParser(); | |
| 378 parser.addOption('mode', allowed: ['debug', 'release']); | |
| 379 throwsFormat(parser, ['--mode=profile']); | |
| 380 }); | |
| 381 | |
| 382 test('returns last provided value', () { | |
| 383 var parser = new ArgParser(); | |
| 384 parser.addOption('define'); | |
| 385 var args = parser.parse(['--define=1', '--define=2']); | |
| 386 expect(args['define'], equals('2')); | |
| 387 }); | |
| 388 | |
| 389 test('returns a List if multi-valued', () { | |
| 390 var parser = new ArgParser(); | |
| 391 parser.addOption('define', allowMultiple: true); | |
| 392 var args = parser.parse(['--define=1']); | |
| 393 expect(args['define'], equals(['1'])); | |
| 394 args = parser.parse(['--define=1', '--define=2']); | |
| 395 expect(args['define'], equals(['1','2'])); | |
| 396 }); | |
| 397 | |
| 398 test('returns the default value for multi-valued arguments ' | |
| 399 'if not explicitly set', () { | |
| 400 var parser = new ArgParser(); | |
| 401 parser.addOption('define', defaultsTo: '0', allowMultiple: true); | |
| 402 var args = parser.parse(['']); | |
| 403 expect(args['define'], equals(['0'])); | |
| 404 }); | |
| 405 | |
| 406 test('are case-sensitive', () { | |
| 407 var parser = new ArgParser(); | |
| 408 parser.addOption('verbose', defaultsTo: 'no'); | |
| 409 parser.addOption('Verbose', defaultsTo: 'no'); | |
| 410 var results = parser.parse(['--verbose', 'chatty']); | |
| 411 expect(results['verbose'], equals('chatty')); | |
| 412 expect(results['Verbose'], equals('no')); | |
| 413 }); | |
| 414 }); | |
| 415 | |
| 416 group('remaining args', () { | |
| 417 test('stops parsing args when a non-option-like arg is encountered', () { | |
| 418 var parser = new ArgParser(); | |
| 419 parser.addFlag('woof'); | |
| 420 parser.addOption('meow'); | |
| 421 parser.addOption('tweet', defaultsTo: 'bird'); | |
| 422 | |
| 423 var results = parser.parse(['--woof', '--meow', 'v', 'not', 'option']); | |
| 424 expect(results['woof'], isTrue); | |
| 425 expect(results['meow'], equals('v')); | |
| 426 expect(results['tweet'], equals('bird')); | |
| 427 expect(results.rest, equals(['not', 'option'])); | |
| 428 }); | |
| 429 | |
| 430 test('consumes "--" and stops', () { | |
| 431 var parser = new ArgParser(); | |
| 432 parser.addFlag('woof', defaultsTo: false); | |
| 433 parser.addOption('meow', defaultsTo: 'kitty'); | |
| 434 | |
| 435 var results = parser.parse(['--woof', '--', '--meow']); | |
| 436 expect(results['woof'], isTrue); | |
| 437 expect(results['meow'], equals('kitty')); | |
| 438 expect(results.rest, equals(['--meow'])); | |
| 439 }); | |
| 440 | |
| 441 test('leaves "--" if not the first non-option', () { | |
| 442 var parser = new ArgParser(); | |
| 443 parser.addFlag('woof'); | |
| 444 | |
| 445 var results = parser.parse(['--woof', 'stop', '--', 'arg']); | |
| 446 expect(results['woof'], isTrue); | |
| 447 expect(results.rest, equals(['stop', '--', 'arg'])); | |
| 448 }); | |
| 449 }); | |
| 450 }); | |
| 451 } | |
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Chromium Code Reviews
Issue 814113004:
Pull args, intl, logging, shelf, and source_maps out of the SDK. (Closed)
Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart