| // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| /// @assertion If f is marked async*, then a fresh instance s implementing |
| /// the built-in class Stream is associated with the invocation and |
| /// immediately returned. When s is listened to, execution of the body of f will |
| /// begin. When f terminates: |
| /// • If the current return value is defined then, if s has been canceled |
| /// then its cancellation future is completed with null. |
| /// • If the current exception x is defined: |
| /// – x is added to s. |
| /// – If s has been canceled then its cancellation future is completed with |
| /// x as an error. |
| /// • s is closed. |
| /// |
| /// @description Check that s is closed if current exception is defined and s |
| /// has been canceled. |
| /// |
| /// @issue 25967 |
| /// @author a.semenov@unipro.ru |
| |
| import 'dart:async'; |
| import '../../../Utils/expect.dart'; |
| |
| Stream generator1() async* { |
| throw 'abc'; |
| } |
| |
| Stream generator2() async* { |
| try { |
| throw 'abc'; |
| } on String catch (e) { |
| throw 3.14; |
| } |
| } |
| |
| test1() { |
| asyncStart(); |
| Stream stream = generator1(); |
| stream.listen( |
| (v) { }, |
| onDone: () { |
| // Should not het here! See Issue #25967 evaluation for more details. |
| Expect.fail('Unexpected onDone event produced by generator1'); |
| } |
| ).cancel().then( |
| (v) { }, |
| onError: (e) { |
| Expect.equals('abc', e); |
| asyncEnd(); |
| } |
| ); |
| } |
| |
| test2() { |
| asyncStart(); |
| Stream stream = generator2(); |
| stream.listen( |
| (v) {}, |
| onDone: () { |
| // Should not het here! See Issue #25967 evaluation for more details. |
| Expect.fail('Unexpected onDone event produced by generator2'); |
| } |
| ).cancel().then( |
| (v) { }, |
| onError: (e) { |
| Expect.equals(3.14, e); |
| asyncEnd(); |
| } |
| ); |
| } |
| |
| main() { |
| test1(); |
| test2(); |
| } |