| // Copyright (c) 2011, 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 Stream<T> where(bool test(T event)) |
| /// Creates a new stream from this stream that discards some data events. |
| /// The new stream sends the same error and done events as this stream, but it only |
| /// sends the data events that satisfy the test. |
| /// @description Checks that the new stream sends the same error and done events as this stream. |
| /// @author kaigorodov |
| |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| import "IsolateStream.dart" as IsolateStream; |
| |
| void check(Iterable data, bool test(event)) { |
| Stream s = IsolateStream.fromIterable(data) |
| .map((x) => x % 2 == 0 ? x : throw new ArgumentError(x)) |
| .asBroadcastStream(); |
| |
| Sync2 sync = new Sync2((err1, err2) { |
| Expect.listEquals(err1, err2); |
| }); |
| |
| asyncStart(); |
| s.listen((var value) {}, onError: (error) { |
| sync.put1(error); |
| }, onDone: () { |
| asyncEnd(); |
| }); |
| asyncStart(); |
| s.where(test).listen((var value) {}, onError: (error) { |
| sync.put1(error); |
| }, onDone: () { |
| asyncEnd(); |
| }); |
| } |
| |
| main() { |
| check(new Iterable.generate(10, (int index) => index), (event) => true); |
| } |