77 lines
2 KiB
Dart
77 lines
2 KiB
Dart
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import 'dart:async';
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import 'package:angel3_reactivex/angel3_reactivex.dart';
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import 'package:test/test.dart';
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import '../utils.dart';
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Stream<int> _getStream() => Stream.fromIterable(const [1, 2, 3, 4]);
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void main() {
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test('Rx.endWith', () async {
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const expectedOutput = [1, 2, 3, 4, 5];
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await expectLater(_getStream().endWith(5), emitsInOrder(expectedOutput));
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});
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test('Rx.endWith.reusable', () async {
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final transformer = EndWithStreamTransformer<int>(5);
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const expectedOutput = [1, 2, 3, 4, 5];
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await expectLater(
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_getStream().transform(transformer), emitsInOrder(expectedOutput));
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await expectLater(
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_getStream().transform(transformer), emitsInOrder(expectedOutput));
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});
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test('Rx.endWith.asBroadcastStream', () async {
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final stream = _getStream().asBroadcastStream().endWith(5);
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// listen twice on same stream
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stream.listen(null);
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stream.listen(null);
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// code should reach here
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await expectLater(true, true);
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});
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test('Rx.endWith.error.shouldThrow', () async {
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final streamWithError = Stream<int>.error(Exception()).endWith(5);
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await expectLater(streamWithError, emitsError(isException));
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});
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test('Rx.endWith.pause.resume', () async {
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const expectedOutput = [1, 2, 3, 4, 5];
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var count = 0;
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late StreamSubscription<int> subscription;
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subscription = _getStream().endWith(5).listen(expectAsync1((result) {
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expect(expectedOutput[count++], result);
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if (count == expectedOutput.length) {
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subscription.cancel();
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}
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}, count: expectedOutput.length));
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subscription.pause();
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subscription.resume();
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});
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test('Rx.endWith accidental broadcast', () async {
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final controller = StreamController<int>();
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final stream = controller.stream.endWith(1);
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stream.listen(null);
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expect(() => stream.listen(null), throwsStateError);
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controller.add(1);
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});
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test('Rx.endWith.nullable', () {
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nullableTest<String?>(
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(s) => s.endWith('String'),
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);
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});
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}
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