| // 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 Stream<S> expand<S>(Iterable<S> convert(T value)) |
| /// The returned stream is a broadcast stream if this stream is. |
| /// |
| /// @description Checks that the returned stream is a broadcast stream |
| /// if source stream is. |
| /// @author a.semenov@unipro.ru |
| |
| library expand_A02_t01; |
| import "dart:async"; |
| import "../../../Utils/expect.dart"; |
| |
| void check<T,S>(Stream<T> stream, Iterable<S> convert(T event)) { |
| Expect.equals(stream.isBroadcast, stream.expand(convert).isBroadcast); |
| } |
| |
| void test(CreateStreamFunction create) { |
| |
| check(create([]), (_) => []); |
| check(create([]).asBroadcastStream(), (_) => []); |
| |
| check(create([1,2,3,4,5]), (_) => []); |
| check(create([1,2,3,4,5]).asBroadcastStream(), (_) => []); |
| |
| check(create([]), (e) => [e]); |
| check(create([]).asBroadcastStream(), (e) => [e]); |
| |
| check(create([1,2,3,4,5]), (e) => [e]); |
| check(create([1,2,3,4,5]).asBroadcastStream(), (e) => [e]); |
| |
| check(create([1,2,3,4,5]), (e) => [e,e]); |
| check(create([1,2,3,4,5]).asBroadcastStream(), (e) => [e,e]); |
| } |