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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 | |
| 6 /** | |
| 7 * Returns a matcher that matches empty strings, maps or collections. | |
| 8 */ | |
| 9 const Matcher isEmpty = const _Empty(); | |
| 10 | |
| 11 class _Empty extends BaseMatcher { | |
| 12 const _Empty(); | |
| 13 bool matches(item, MatchState matchState) { | |
| 14 if (item is Map || item is Collection) { | |
| 15 return item.isEmpty(); | |
| 16 } else if (item is String) { | |
| 17 return item.length == 0; | |
| 18 } else { | |
| 19 return false; | |
| 20 } | |
| 21 } | |
| 22 Description describe(Description description) => | |
| 23 description.add('empty'); | |
| 24 } | |
| 25 | |
| 26 /** A matcher that matches any null value. */ | |
| 27 const Matcher isNull = const _IsNull(); | |
| 28 | |
| 29 /** A matcher that matches any non-null value. */ | |
| 30 const Matcher isNotNull = const _IsNotNull(); | |
| 31 | |
| 32 class _IsNull extends BaseMatcher { | |
| 33 const _IsNull(); | |
| 34 bool matches(item, MatchState matchState) => item == null; | |
| 35 Description describe(Description description) => | |
| 36 description.add('null'); | |
| 37 } | |
| 38 | |
| 39 class _IsNotNull extends BaseMatcher { | |
| 40 const _IsNotNull(); | |
| 41 bool matches(item, MatchState matchState) => item != null; | |
| 42 Description describe(Description description) => | |
| 43 description.add('not null'); | |
| 44 } | |
| 45 | |
| 46 /** A matcher that matches the Boolean value true. */ | |
| 47 const Matcher isTrue = const _IsTrue(); | |
| 48 | |
| 49 /** A matcher that matches anything except the Boolean value true. */ | |
| 50 const Matcher isFalse = const _IsFalse(); | |
| 51 | |
| 52 class _IsTrue extends BaseMatcher { | |
| 53 const _IsTrue(); | |
| 54 bool matches(item, MatchState matchState) => item == true; | |
| 55 Description describe(Description description) => | |
| 56 description.add('true'); | |
| 57 } | |
| 58 | |
| 59 class _IsFalse extends BaseMatcher { | |
| 60 const _IsFalse(); | |
| 61 bool matches(item, MatchState matchState) => item != true; | |
| 62 Description describe(Description description) => | |
| 63 description.add('false'); | |
| 64 } | |
| 65 | |
| 66 /** | |
| 67 * Returns a matches that matches if the value is the same instance | |
| 68 * as [object] (`===`). | |
| 69 */ | |
| 70 Matcher same(expected) => new _IsSameAs(expected); | |
| 71 | |
| 72 class _IsSameAs extends BaseMatcher { | |
| 73 final _expected; | |
| 74 const _IsSameAs(this._expected); | |
| 75 bool matches(item, MatchState matchState) => item === _expected; | |
| 76 // If all types were hashable we could show a hash here. | |
| 77 Description describe(Description description) => | |
| 78 description.add('same instance as ').addDescriptionOf(_expected); | |
| 79 } | |
| 80 | |
| 81 /** | |
| 82 * Returns a matcher that does a deep recursive match. This only works | |
| 83 * with scalars, Maps and Iterables. To handle cyclic structures a | |
| 84 * recursion depth [limit] can be provided. The default limit is 100. | |
| 85 */ | |
| 86 Matcher equals(expected, [limit=100]) => | |
| 87 new _DeepMatcher(expected, limit); | |
| 88 | |
| 89 class _DeepMatcher extends BaseMatcher { | |
| 90 final _expected; | |
| 91 final int _limit; | |
| 92 var count; | |
| 93 | |
| 94 _DeepMatcher(this._expected, [limit = 1000]) : this._limit = limit; | |
| 95 | |
| 96 String _compareIterables(expected, actual, matcher, depth) { | |
| 97 if (actual is !Iterable) { | |
| 98 return 'is not Iterable'; | |
| 99 } | |
| 100 var expectedIterator = expected.iterator(); | |
| 101 var actualIterator = actual.iterator(); | |
| 102 var position = 0; | |
| 103 String reason = null; | |
| 104 while (reason == null) { | |
| 105 if (expectedIterator.hasNext()) { | |
| 106 if (actualIterator.hasNext()) { | |
| 107 Description r = matcher(expectedIterator.next(), | |
| 108 actualIterator.next(), | |
| 109 'mismatch at position ${position}', | |
| 110 depth); | |
| 111 if (r != null) reason = r.toString(); | |
| 112 ++position; | |
| 113 } else { | |
| 114 reason = 'shorter than expected'; | |
| 115 } | |
| 116 } else if (actualIterator.hasNext()) { | |
| 117 reason = 'longer than expected'; | |
| 118 } else { | |
| 119 return null; | |
| 120 } | |
| 121 } | |
| 122 return reason; | |
| 123 } | |
| 124 | |
| 125 Description _recursiveMatch(expected, actual, String location, int depth) { | |
| 126 Description reason = null; | |
| 127 // If _limit is 1 we can only recurse one level into object. | |
| 128 bool canRecurse = depth == 0 || _limit > 1; | |
| 129 if (expected == actual) { | |
| 130 // Do nothing. | |
| 131 } else if (depth > _limit) { | |
| 132 reason = new StringDescription('recursion depth limit exceeded'); | |
| 133 } else { | |
| 134 if (expected is Iterable && canRecurse) { | |
| 135 String r = _compareIterables(expected, actual, | |
| 136 _recursiveMatch, depth+1); | |
| 137 if (r != null) reason = new StringDescription(r); | |
| 138 } else if (expected is Map && canRecurse) { | |
| 139 if (actual is !Map) { | |
| 140 reason = new StringDescription('expected a map'); | |
| 141 } else if (expected.length != actual.length) { | |
| 142 reason = new StringDescription('different map lengths'); | |
| 143 } else { | |
| 144 for (var key in expected.getKeys()) { | |
| 145 if (!actual.containsKey(key)) { | |
| 146 reason = new StringDescription('missing map key '); | |
| 147 reason.addDescriptionOf(key); | |
| 148 break; | |
| 149 } | |
| 150 reason = _recursiveMatch(expected[key], actual[key], | |
| 151 'with key <${key}> ${location}', depth+1); | |
| 152 if (reason != null) { | |
| 153 break; | |
| 154 } | |
| 155 } | |
| 156 } | |
| 157 } else { | |
| 158 // If we have recursed, show the expected value too; if not, | |
| 159 // expect() will show it for us. | |
| 160 reason = new StringDescription(); | |
| 161 if (depth > 1) { | |
| 162 reason.add('expected ').addDescriptionOf(expected).add(' but was '). | |
| 163 addDescriptionOf(actual); | |
| 164 } else { | |
| 165 reason.add('was ').addDescriptionOf(actual); | |
| 166 } | |
| 167 } | |
| 168 } | |
| 169 if (reason != null && location.length > 0) { | |
| 170 reason.add(' ').add(location); | |
| 171 } | |
| 172 return reason; | |
| 173 } | |
| 174 | |
| 175 String _match(expected, actual) { | |
| 176 Description reason = _recursiveMatch(expected, actual, '', 0); | |
| 177 return reason == null ? null : reason.toString(); | |
| 178 } | |
| 179 | |
| 180 // TODO(gram) - see if we can make use of matchState here to avoid | |
| 181 // recursing again in describeMismatch. | |
| 182 bool matches(item, MatchState matchState) => _match(_expected, item) == null; | |
| 183 | |
| 184 Description describe(Description description) => | |
| 185 description.addDescriptionOf(_expected); | |
| 186 | |
| 187 Description describeMismatch(item, Description mismatchDescription, | |
| 188 MatchState matchState, bool verbose) => | |
| 189 mismatchDescription.add(_match(_expected, item)); | |
| 190 } | |
| 191 | |
| 192 /** A matcher that matches any value. */ | |
| 193 const Matcher anything = const _IsAnything(); | |
| 194 | |
| 195 class _IsAnything extends BaseMatcher { | |
| 196 const _IsAnything(); | |
| 197 bool matches(item, MatchState matchState) => true; | |
| 198 Description describe(Description description) => | |
| 199 description.add('anything'); | |
| 200 } | |
| 201 | |
| 202 /** | |
| 203 * Returns a matcher that matches if an object is an instance | |
| 204 * of [type] (or a subtype). | |
| 205 * | |
| 206 * As types are not first class objects in Dart we can only | |
| 207 * approximate this test by using a generic wrapper class. | |
| 208 * | |
| 209 * For example, to test whether 'bar' is an instance of type | |
| 210 * 'Foo', we would write: | |
| 211 * | |
| 212 * expect(bar, new isInstanceOf<Foo>()); | |
| 213 * | |
| 214 * To get better error message, supply a name when creating the | |
| 215 * Type wrapper; e.g.: | |
| 216 * | |
| 217 * expect(bar, new isInstanceOf<Foo>('Foo')); | |
| 218 */ | |
| 219 class isInstanceOf<T> extends BaseMatcher { | |
| 220 final String _name; | |
| 221 const isInstanceOf([name = 'specified type']) : this._name = name; | |
| 222 bool matches(obj, MatchState matchState) => obj is T; | |
| 223 // The description here is lame :-( | |
| 224 Description describe(Description description) => | |
| 225 description.add('an instance of ${_name}'); | |
| 226 } | |
| 227 | |
| 228 /** | |
| 229 * This can be used to match two kinds of objects: | |
| 230 * | |
| 231 * * A [Function] that throws an exception when called. The function cannot | |
| 232 * take any arguments. If you want to test that a function expecting | |
| 233 * arguments throws, wrap it in another zero-argument function that calls | |
| 234 * the one you want to test. | |
| 235 * | |
| 236 * * A [Future] that completes with an exception. Note that this creates an | |
| 237 * asynchronous expectation. The call to `expect()` that includes this will | |
| 238 * return immediately and execution will continue. Later, when the future | |
| 239 * completes, the actual expectation will run. | |
| 240 */ | |
| 241 const Matcher throws = const _Throws(); | |
| 242 | |
| 243 /** | |
| 244 * This can be used to match two kinds of objects: | |
| 245 * | |
| 246 * * A [Function] that throws an exception when called. The function cannot | |
| 247 * take any arguments. If you want to test that a function expecting | |
| 248 * arguments throws, wrap it in another zero-argument function that calls | |
| 249 * the one you want to test. | |
| 250 * | |
| 251 * * A [Future] that completes with an exception. Note that this creates an | |
| 252 * asynchronous expectation. The call to `expect()` that includes this will | |
| 253 * return immediately and execution will continue. Later, when the future | |
| 254 * completes, the actual expectation will run. | |
| 255 * | |
| 256 * In both cases, when an exception is thrown, this will test that the exception | |
| 257 * object matches [matcher]. If [matcher] is not an instance of [Matcher], it | |
| 258 * will implicitly be treated as `equals(matcher)`. | |
| 259 */ | |
| 260 Matcher throwsA(matcher) => new _Throws(wrapMatcher(matcher)); | |
| 261 | |
| 262 /** | |
| 263 * A matcher that matches a function call against no exception. | |
| 264 * The function will be called once. Any exceptions will be silently swallowed. | |
| 265 * The value passed to expect() should be a reference to the function. | |
| 266 * Note that the function cannot take arguments; to handle this | |
| 267 * a wrapper will have to be created. | |
| 268 */ | |
| 269 const Matcher returnsNormally = const _ReturnsNormally(); | |
| 270 | |
| 271 class _Throws extends BaseMatcher { | |
| 272 final Matcher _matcher; | |
| 273 | |
| 274 const _Throws([Matcher matcher]) : | |
| 275 this._matcher = matcher; | |
| 276 | |
| 277 bool matches(item, MatchState matchState) { | |
| 278 if (item is Future) { | |
| 279 // Queue up an asynchronous expectation that validates when the future | |
| 280 // completes. | |
| 281 item.onComplete(expectAsync1((future) { | |
| 282 if (future.hasValue) { | |
| 283 expect(false, reason: | |
| 284 "Expected future to fail, but succeeded with '${future.value}'."); | |
| 285 } else if (_matcher != null) { | |
| 286 var reason; | |
| 287 if (future.stackTrace != null) { | |
| 288 var stackTrace = future.stackTrace.toString(); | |
| 289 stackTrace = " ${stackTrace.replaceAll("\n", "\n ")}"; | |
| 290 reason = "Actual exception trace:\n$stackTrace"; | |
| 291 } | |
| 292 expect(future.exception, _matcher, reason: reason); | |
| 293 } | |
| 294 })); | |
| 295 | |
| 296 // It hasn't failed yet. | |
| 297 return true; | |
| 298 } | |
| 299 | |
| 300 try { | |
| 301 item(); | |
| 302 return false; | |
| 303 } catch (e, s) { | |
| 304 if (_matcher == null ||_matcher.matches(e, matchState)) { | |
| 305 return true; | |
| 306 } else { | |
| 307 matchState.state = { | |
| 308 'exception' :e, | |
| 309 'stack': s | |
| 310 }; | |
| 311 return false; | |
| 312 } | |
| 313 } | |
| 314 } | |
| 315 | |
| 316 Description describe(Description description) { | |
| 317 if (_matcher == null) { | |
| 318 return description.add("throws an exception"); | |
| 319 } else { | |
| 320 return description.add('throws an exception which matches '). | |
| 321 addDescriptionOf(_matcher); | |
| 322 } | |
| 323 } | |
| 324 | |
| 325 Description describeMismatch(item, Description mismatchDescription, | |
| 326 MatchState matchState, | |
| 327 bool verbose) { | |
| 328 if (_matcher == null || matchState.state == null) { | |
| 329 return mismatchDescription.add(' no exception'); | |
| 330 } else { | |
| 331 mismatchDescription. | |
| 332 add(' exception ').addDescriptionOf(matchState.state['exception']); | |
| 333 if (verbose) { | |
| 334 mismatchDescription.add(' at '). | |
| 335 add(matchState.state['stack'].toString()); | |
| 336 } | |
| 337 mismatchDescription.add(' does not match ').addDescriptionOf(_matcher); | |
| 338 return mismatchDescription; | |
| 339 } | |
| 340 } | |
| 341 } | |
| 342 | |
| 343 class _ReturnsNormally extends BaseMatcher { | |
| 344 const _ReturnsNormally(); | |
| 345 | |
| 346 bool matches(f, MatchState matchState) { | |
| 347 try { | |
| 348 f(); | |
| 349 return true; | |
| 350 } catch (e, s) { | |
| 351 matchState.state = { | |
| 352 'exception' : e, | |
| 353 'stack': s | |
| 354 }; | |
| 355 return false; | |
| 356 } | |
| 357 } | |
| 358 | |
| 359 Description describe(Description description) => | |
| 360 description.add("return normally"); | |
| 361 | |
| 362 Description describeMismatch(item, Description mismatchDescription, | |
| 363 MatchState matchState, | |
| 364 bool verbose) { | |
| 365 mismatchDescription.add(' threw '). | |
| 366 addDescriptionOf(matchState.state['exception']); | |
| 367 if (verbose) { | |
| 368 mismatchDescription.add(' at '). | |
| 369 add(matchState.state['stack'].toString()); | |
| 370 } | |
| 371 return mismatchDescription; | |
| 372 } | |
| 373 } | |
| 374 | |
| 375 /* | |
| 376 * Matchers for different exception types. Ideally we should just be able to | |
| 377 * use something like: | |
| 378 * | |
| 379 * final Matcher throwsException = | |
| 380 * const _Throws(const isInstanceOf<Exception>()); | |
| 381 * | |
| 382 * Unfortunately instanceOf is not working with dart2js. | |
| 383 * | |
| 384 * Alternatively, if static functions could be used in const expressions, | |
| 385 * we could use: | |
| 386 * | |
| 387 * bool _isException(x) => x is Exception; | |
| 388 * final Matcher isException = const _Predicate(_isException, "Exception"); | |
| 389 * final Matcher throwsException = const _Throws(isException); | |
| 390 * | |
| 391 * But currently using static functions in const expressions is not supported. | |
| 392 * For now the only solution for all platforms seems to be separate classes | |
| 393 * for each exception type. | |
| 394 */ | |
| 395 | |
| 396 /* abstract */ class _ExceptionMatcher extends BaseMatcher { | |
| 397 final String _name; | |
| 398 const _ExceptionMatcher(this._name); | |
| 399 Description describe(Description description) => | |
| 400 description.add(_name); | |
| 401 } | |
| 402 | |
| 403 /** A matcher for FormatExceptions. */ | |
| 404 const isFormatException = const _FormatException(); | |
| 405 | |
| 406 /** A matcher for functions that throw FormatException */ | |
| 407 const Matcher throwsFormatException = | |
| 408 const _Throws(isFormatException); | |
| 409 | |
| 410 class _FormatException extends _ExceptionMatcher { | |
| 411 const _FormatException() : super("FormatException"); | |
| 412 bool matches(item, MatchState matchState) => item is FormatException; | |
| 413 } | |
| 414 | |
| 415 /** A matcher for Exceptions. */ | |
| 416 const isException = const _Exception(); | |
| 417 | |
| 418 /** A matcher for functions that throw Exception */ | |
| 419 const Matcher throwsException = const _Throws(isException); | |
| 420 | |
| 421 class _Exception extends _ExceptionMatcher { | |
| 422 const _Exception() : super("Exception"); | |
| 423 bool matches(item, MatchState matchState) => item is Exception; | |
| 424 } | |
| 425 | |
| 426 /** A matcher for IllegalArgumentExceptions. */ | |
| 427 const isIllegalArgumentException = const _IllegalArgumentException(); | |
| 428 | |
| 429 /** A matcher for functions that throw IllegalArgumentException */ | |
| 430 const Matcher throwsIllegalArgumentException = | |
| 431 const _Throws(isIllegalArgumentException); | |
| 432 | |
| 433 class _IllegalArgumentException extends _ExceptionMatcher { | |
| 434 const _IllegalArgumentException() : super("IllegalArgumentException"); | |
| 435 bool matches(item, MatchState matchState) => item is IllegalArgumentException; | |
| 436 } | |
| 437 | |
| 438 /** A matcher for IllegalJSRegExpExceptions. */ | |
| 439 const isIllegalJSRegExpException = const _IllegalJSRegExpException(); | |
| 440 | |
| 441 /** A matcher for functions that throw IllegalJSRegExpException */ | |
| 442 const Matcher throwsIllegalJSRegExpException = | |
| 443 const _Throws(isIllegalJSRegExpException); | |
| 444 | |
| 445 class _IllegalJSRegExpException extends _ExceptionMatcher { | |
| 446 const _IllegalJSRegExpException() : super("IllegalJSRegExpException"); | |
| 447 bool matches(item, MatchState matchState) => item is IllegalJSRegExpException; | |
| 448 } | |
| 449 | |
| 450 /** A matcher for IndexOutOfRangeExceptions. */ | |
| 451 const isIndexOutOfRangeException = const _IndexOutOfRangeException(); | |
| 452 | |
| 453 /** A matcher for functions that throw IndexOutOfRangeException */ | |
| 454 const Matcher throwsIndexOutOfRangeException = | |
| 455 const _Throws(isIndexOutOfRangeException); | |
| 456 | |
| 457 class _IndexOutOfRangeException extends _ExceptionMatcher { | |
| 458 const _IndexOutOfRangeException() : super("IndexOutOfRangeException"); | |
| 459 bool matches(item, MatchState matchState) => item is IndexOutOfRangeException; | |
| 460 } | |
| 461 | |
| 462 /** A matcher for NoSuchMethodErrors. */ | |
| 463 const isNoSuchMethodError = const _NoSuchMethodError(); | |
| 464 | |
| 465 /** A matcher for functions that throw NoSuchMethodError */ | |
| 466 const Matcher throwsNoSuchMethodError = | |
| 467 const _Throws(isNoSuchMethodError); | |
| 468 | |
| 469 class _NoSuchMethodError extends _ExceptionMatcher { | |
| 470 const _NoSuchMethodError() : super("NoSuchMethodError"); | |
| 471 bool matches(item, MatchState matchState) => item is NoSuchMethodError; | |
| 472 } | |
| 473 | |
| 474 /** A matcher for NotImplementedExceptions. */ | |
| 475 const isNotImplementedException = const _NotImplementedException(); | |
| 476 | |
| 477 /** A matcher for functions that throw Exception */ | |
| 478 const Matcher throwsNotImplementedException = | |
| 479 const _Throws(isNotImplementedException); | |
| 480 | |
| 481 class _NotImplementedException extends _ExceptionMatcher { | |
| 482 const _NotImplementedException() : super("NotImplementedException"); | |
| 483 bool matches(item, MatchState matchState) => item is NotImplementedException; | |
| 484 } | |
| 485 | |
| 486 /** A matcher for NullPointerExceptions. */ | |
| 487 const isNullPointerException = const _NullPointerException(); | |
| 488 | |
| 489 /** A matcher for functions that throw NotNullPointerException */ | |
| 490 const Matcher throwsNullPointerException = | |
| 491 const _Throws(isNullPointerException); | |
| 492 | |
| 493 class _NullPointerException extends _ExceptionMatcher { | |
| 494 const _NullPointerException() : super("NullPointerException"); | |
| 495 bool matches(item, MatchState matchState) => item is NullPointerException; | |
| 496 } | |
| 497 | |
| 498 /** A matcher for UnsupportedOperationExceptions. */ | |
| 499 const isUnsupportedOperationException = const _UnsupportedOperationException(); | |
| 500 | |
| 501 /** A matcher for functions that throw UnsupportedOperationException */ | |
| 502 const Matcher throwsUnsupportedOperationException = | |
| 503 const _Throws(isUnsupportedOperationException); | |
| 504 | |
| 505 class _UnsupportedOperationException extends _ExceptionMatcher { | |
| 506 const _UnsupportedOperationException() : | |
| 507 super("UnsupportedOperationException"); | |
| 508 bool matches(item, MatchState matchState) => item is UnsupportedOperationExcep
tion; | |
| 509 } | |
| 510 | |
| 511 /** | |
| 512 * Returns a matcher that matches if an object has a length property | |
| 513 * that matches [matcher]. | |
| 514 */ | |
| 515 Matcher hasLength(matcher) => | |
| 516 new _HasLength(wrapMatcher(matcher)); | |
| 517 | |
| 518 class _HasLength extends BaseMatcher { | |
| 519 final Matcher _matcher; | |
| 520 const _HasLength([Matcher matcher = null]) : this._matcher = matcher; | |
| 521 | |
| 522 bool matches(item, MatchState matchState) { | |
| 523 return _matcher.matches(item.length, matchState); | |
| 524 } | |
| 525 | |
| 526 Description describe(Description description) => | |
| 527 description.add('an object with length of '). | |
| 528 addDescriptionOf(_matcher); | |
| 529 | |
| 530 Description describeMismatch(item, Description mismatchDescription, | |
| 531 MatchState matchState, bool verbose) { | |
| 532 super.describeMismatch(item, mismatchDescription, matchState, verbose); | |
| 533 try { | |
| 534 // We want to generate a different description if there is no length | |
| 535 // property. This is harmless code that will throw if no length property | |
| 536 // but subtle enough that an optimizer shouldn't strip it out. | |
| 537 if (item.length * item.length >= 0) { | |
| 538 return mismatchDescription.add(' with length of '). | |
| 539 addDescriptionOf(item.length); | |
| 540 } | |
| 541 } catch (e) { | |
| 542 return mismatchDescription.add(' has no length property'); | |
| 543 } | |
| 544 } | |
| 545 } | |
| 546 | |
| 547 /** | |
| 548 * Returns a matcher that matches if the match argument contains | |
| 549 * the expected value. For [String]s this means substring matching; | |
| 550 * for [Map]s is means the map has the key, and for [Collection]s it | |
| 551 * means the collection has a matching element. In the case of collections, | |
| 552 * [expected] can itself be a matcher. | |
| 553 */ | |
| 554 Matcher contains(expected) => new _Contains(expected); | |
| 555 | |
| 556 class _Contains extends BaseMatcher { | |
| 557 | |
| 558 final _expected; | |
| 559 | |
| 560 const _Contains(this._expected); | |
| 561 | |
| 562 bool matches(item, MatchState matchState) { | |
| 563 if (item is String) { | |
| 564 return item.indexOf(_expected) >= 0; | |
| 565 } else if (item is Collection) { | |
| 566 if (_expected is Matcher) { | |
| 567 return item.some((e) => _expected.matches(e, matchState)); | |
| 568 } else { | |
| 569 return item.some((e) => e == _expected); | |
| 570 } | |
| 571 } else if (item is Map) { | |
| 572 return item.containsKey(_expected); | |
| 573 } | |
| 574 return false; | |
| 575 } | |
| 576 | |
| 577 Description describe(Description description) => | |
| 578 description.add('contains ').addDescriptionOf(_expected); | |
| 579 } | |
| 580 | |
| 581 /** | |
| 582 * Returns a matcher that matches if the match argument is in | |
| 583 * the expected value. This is the converse of [contains]. | |
| 584 */ | |
| 585 Matcher isIn(expected) => new _In(expected); | |
| 586 | |
| 587 class _In extends BaseMatcher { | |
| 588 | |
| 589 final _expected; | |
| 590 | |
| 591 const _In(this._expected); | |
| 592 | |
| 593 bool matches(item, MatchState matchState) { | |
| 594 if (_expected is String) { | |
| 595 return _expected.indexOf(item) >= 0; | |
| 596 } else if (_expected is Collection) { | |
| 597 return _expected.some((e) => e == item); | |
| 598 } else if (_expected is Map) { | |
| 599 return _expected.containsKey(item); | |
| 600 } | |
| 601 return false; | |
| 602 } | |
| 603 | |
| 604 Description describe(Description description) => | |
| 605 description.add('is in ').addDescriptionOf(_expected); | |
| 606 } | |
| 607 | |
| 608 /** | |
| 609 * Returns a matcher that uses an arbitrary function that returns | |
| 610 * true or false for the actual value. | |
| 611 */ | |
| 612 Matcher predicate(f, [description = 'satisfies function']) => | |
| 613 new _Predicate(f, description); | |
| 614 | |
| 615 class _Predicate extends BaseMatcher { | |
| 616 | |
| 617 final _matcher; | |
| 618 final String _description; | |
| 619 | |
| 620 const _Predicate(this._matcher, this._description); | |
| 621 | |
| 622 bool matches(item, MatchState matchState) => _matcher(item); | |
| 623 | |
| 624 Description describe(Description description) => | |
| 625 description.add(_description); | |
| 626 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 10918240:
Make unittest follow the new package layout. (Closed)
Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart