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| 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 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. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 library error_group_test; | 5 library error_group_test; |
| 6 | 6 |
| 7 import 'dart:async'; | 7 import 'dart:async'; |
| 8 | 8 |
| 9 import 'package:unittest/unittest.dart'; | 9 import 'package:unittest/unittest.dart'; |
| 10 | 10 |
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| 203 StreamController controller; | 203 StreamController controller; |
| 204 Stream stream; | 204 Stream stream; |
| 205 | 205 |
| 206 setUp(() { | 206 setUp(() { |
| 207 errorGroup = new ErrorGroup(); | 207 errorGroup = new ErrorGroup(); |
| 208 controller = new StreamController(); | 208 controller = new StreamController(); |
| 209 stream = errorGroup.registerStream(controller.stream.asBroadcastStream()); | 209 stream = errorGroup.registerStream(controller.stream.asBroadcastStream()); |
| 210 }); | 210 }); |
| 211 | 211 |
| 212 test('should pass through values from the stream', () { | 212 test('should pass through values from the stream', () { |
| 213 StreamIterator iter = new StreamIterator(stream); | 213 expect(stream.elementAt(0), completion(equals(1))); |
| 214 iter.moveNext().then((hasNext) { | 214 expect(stream.elementAt(1), completion(equals(2))); |
| 215 expect(hasNext, isTrue); | |
| 216 expect(iter.current, equals(1)); | |
| 217 iter.moveNext().then((hasNext) { | |
| 218 expect(hasNext, isTrue); | |
| 219 expect(iter.current, equals(2)); | |
| 220 expect(iter.moveNext(), completion(isFalse)); | |
| 221 }); | |
| 222 }); | |
| 223 expect(errorGroup.done, completes); | 215 expect(errorGroup.done, completes); |
| 224 | 216 |
| 225 controller..add(1)..add(2)..close(); | 217 controller..add(1)..add(2)..close(); |
| 226 }); | 218 }); |
| 227 | 219 |
| 228 test('should pass through an error from the stream if it has a ' | 220 test('should pass through an error from the stream if it has a ' |
| 229 'listener', () { | 221 'listener', () { |
| 230 expect(stream.first, throwsFormatException); | 222 expect(stream.first, throwsFormatException); |
| 231 // errorGroup shouldn't top-level the exception | 223 // errorGroup shouldn't top-level the exception |
| 232 controller.addError(new FormatException()); | 224 controller.addError(new FormatException()); |
| 233 }); | 225 }); |
| 234 | 226 |
| 235 test('should notify the error group of an exception from the stream even ' | 227 test('should notify the error group of an exception from the stream even ' |
| 236 'if it has a listener', () { | 228 'if it has a listener', () { |
| 237 expect(stream.first, throwsFormatException); | 229 expect(stream.first, throwsFormatException); |
| 238 expect(errorGroup.done, throwsFormatException); | 230 expect(errorGroup.done, throwsFormatException); |
| 239 controller.addError(new FormatException()); | 231 controller.addError(new FormatException()); |
| 240 }); | 232 }); |
| 241 | 233 |
| 242 test('should pass a signaled exception to the stream if it has a listener ' | 234 test('should pass a signaled exception to the stream if it has a listener ' |
| 243 'and should unsubscribe that stream', () { | 235 'and should unsubscribe that stream', () { |
| 236 expect(stream.first, throwsFormatException); |
| 244 // errorGroup shouldn't top-level the exception | 237 // errorGroup shouldn't top-level the exception |
| 245 expect(stream.first, throwsFormatException); | |
| 246 errorGroup.signalError(new FormatException()); | 238 errorGroup.signalError(new FormatException()); |
| 247 | 239 |
| 248 expect(new Future(() { | 240 expect(stream.first.catchError((_) { |
| 249 controller.add('value'); | 241 controller.add('value'); |
| 250 }), completes); | 242 return stream.isEmpty; |
| 243 }), completion(isTrue)); |
| 251 }); | 244 }); |
| 252 | 245 |
| 253 test('should notify the error group of a signaled exception even if the ' | 246 test('should notify the error group of a signaled exception even if the ' |
| 254 'stream has a listener', () { | 247 'stream has a listener', () { |
| 255 expect(stream.first, throwsFormatException); | 248 expect(stream.first, throwsFormatException); |
| 256 expect(errorGroup.done, throwsFormatException); | 249 expect(errorGroup.done, throwsFormatException); |
| 257 errorGroup.signalError(new FormatException()); | 250 errorGroup.signalError(new FormatException()); |
| 258 }); | 251 }); |
| 259 | 252 |
| 260 test("should see one value and complete .done when the stream is done even " | 253 test("should see one value and complete .done when the stream is done even " |
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| 345 expect(stream1.toList(), completion(equals(['value1.1', 'value1.2']))); | 338 expect(stream1.toList(), completion(equals(['value1.1', 'value1.2']))); |
| 346 expect(stream2.toList(), completion(equals(['value2.1', 'value2.2']))); | 339 expect(stream2.toList(), completion(equals(['value2.1', 'value2.2']))); |
| 347 expect(errorGroup.done, completes); | 340 expect(errorGroup.done, completes); |
| 348 | 341 |
| 349 controller1..add('value1.1')..add('value1.2')..close(); | 342 controller1..add('value1.1')..add('value1.2')..close(); |
| 350 controller2..add('value2.1')..add('value2.2')..close(); | 343 controller2..add('value2.1')..add('value2.2')..close(); |
| 351 }); | 344 }); |
| 352 | 345 |
| 353 test("shouldn't throw a top-level exception if a stream receives an error " | 346 test("shouldn't throw a top-level exception if a stream receives an error " |
| 354 "after the other listened stream completes", () { | 347 "after the other listened stream completes", () { |
| 355 var signal = new Completer(); | 348 expect(stream1.toList(), completion(equals(['value1', 'value2']))); |
| 356 expect(stream1.toList().whenComplete(signal.complete), | |
| 357 completion(equals(['value1', 'value2']))); | |
| 358 controller1..add('value1')..add('value2')..close(); | 349 controller1..add('value1')..add('value2')..close(); |
| 359 | 350 |
| 360 expect(signal.future.then((_) { | 351 expect(stream1.toList().then((_) { |
| 361 // shouldn't cause a top-level exception | 352 // shouldn't cause a top-level exception |
| 362 controller2.addError(new FormatException()); | 353 controller2.addError(new FormatException()); |
| 363 }), completes); | 354 }), completes); |
| 364 }); | 355 }); |
| 365 | 356 |
| 366 test("shouldn't throw a top-level exception if an error is signaled after " | 357 test("shouldn't throw a top-level exception if an error is signaled after " |
| 367 "one listened stream completes", () { | 358 "one listened stream completes", () { |
| 368 var signal = new Completer(); | 359 expect(stream1.toList(), completion(equals(['value1', 'value2']))); |
| 369 expect(stream1.toList().whenComplete(signal.complete), | |
| 370 completion(equals(['value1', 'value2']))); | |
| 371 controller1..add('value1')..add('value2')..close(); | 360 controller1..add('value1')..add('value2')..close(); |
| 372 | 361 |
| 373 expect(signal.future.then((_) { | 362 expect(stream1.toList().then((_) { |
| 374 // shouldn't cause a top-level exception | 363 // shouldn't cause a top-level exception |
| 375 errorGroup.signalError(new FormatException()); | 364 errorGroup.signalError(new FormatException()); |
| 376 }), completes); | 365 }), completes); |
| 377 }); | 366 }); |
| 378 }); | 367 }); |
| 379 | 368 |
| 380 group('with a stream and a future', () { | 369 group('with a stream and a future', () { |
| 381 StreamController controller; | 370 StreamController controller; |
| 382 Stream stream; | 371 Stream stream; |
| 383 Completer completer; | 372 Completer completer; |
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| 423 completer.complete('value'); | 412 completer.complete('value'); |
| 424 | 413 |
| 425 expect(future.then((_) { | 414 expect(future.then((_) { |
| 426 // shouldn't cause a top-level exception | 415 // shouldn't cause a top-level exception |
| 427 controller.addError(new FormatException()); | 416 controller.addError(new FormatException()); |
| 428 }), completes); | 417 }), completes); |
| 429 }); | 418 }); |
| 430 | 419 |
| 431 test("shouldn't throw a top-level exception if the future receives an " | 420 test("shouldn't throw a top-level exception if the future receives an " |
| 432 "error after the listened stream completes", () { | 421 "error after the listened stream completes", () { |
| 433 var signal = new Completer(); | 422 expect(stream.toList(), completion(equals(['value1', 'value2']))); |
| 434 expect(stream.toList().whenComplete(signal.complete), | |
| 435 completion(equals(['value1', 'value2']))); | |
| 436 controller..add('value1')..add('value2')..close(); | 423 controller..add('value1')..add('value2')..close(); |
| 437 | 424 |
| 438 expect(signal.future.then((_) { | 425 expect(stream.toList().then((_) { |
| 439 // shouldn't cause a top-level exception | 426 // shouldn't cause a top-level exception |
| 440 completer.completeError(new FormatException()); | 427 completer.completeError(new FormatException()); |
| 441 }), completes); | 428 }), completes); |
| 442 }); | 429 }); |
| 443 }); | 430 }); |
| 444 } | 431 } |
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