Created
September 15, 2018 09:12
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import 'package:rxdart/rxdart.dart'; | |
import 'package:test/test.dart'; | |
void main() { | |
test('ReplaySubjectのサンプル', () { | |
ReplaySubject<int> subject = new ReplaySubject<int>(); | |
// 1, 2をStreamに流す。しかしこの時点ではListenerがいないので配信されない | |
subject.sink.add(1); | |
subject.sink.add(2); | |
// 期待値 | |
final List<int> expected = [1, 2]; | |
// 1, 2は流れてしまった後に、Listenerを追加。後からでも全て受け取ることができる | |
int calledCount1 = 0; | |
subject.listen(expectAsync1((int data) { | |
expect(data, expected[calledCount1++]); | |
}, count: 2)); | |
// さらに別のListenerも追加。Broadcastなので、こちらでも受信できる | |
int calledCount2 = 0; | |
subject.listen(expectAsync1((int data) { | |
expect(data, expected[calledCount2++]); | |
}, count: 2)); | |
}); | |
} |
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