| // 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. |
| |
| // @dart = 2.9 |
| |
| library stream_transform_test; |
| |
| import 'dart:async'; |
| |
| import 'package:expect/expect.dart'; |
| import 'package:async_helper/async_minitest.dart'; |
| |
| import 'event_helper.dart'; |
| |
| main() { |
| // Regression tests for http://dartbug.com/8310 and 8311 |
| |
| test("simpleDone", () { |
| StreamController c = new StreamController(sync: true); |
| Stream out = c.stream.handleError((x) {}).handleError((x) {}); |
| out.listen((v) {}, onDone: expectAsync(() {})); |
| // Should not throw. |
| c.close(); |
| }); |
| |
| test("with events", () { |
| StreamController c = new StreamController(sync: true); |
| Events expected = new Events.fromIterable([10, 12]); |
| Events input = new Events.fromIterable([1, 2, 3, 4, 5, 6, 7]); |
| Events actual = new Events.capture( |
| c.stream.map((x) => x * 2).where((x) => x > 5).skip(2).take(2)); |
| actual.onDone(expectAsync(() { |
| Expect.listEquals(expected.events, actual.events); |
| })); |
| input.replay(c); |
| }); |
| |
| test("paused events", () { |
| StreamController c = new StreamController(sync: true); |
| Events expected = new Events.fromIterable([10, 12]); |
| Events input = new Events.fromIterable([1, 2, 3, 4, 5, 6, 7]); |
| Events actual = new Events.capture( |
| c.stream.map((x) => x * 2).where((x) => x > 5).skip(2).take(2)); |
| actual.onDone(expectAsync(() { |
| Expect.listEquals(expected.events, actual.events); |
| })); |
| actual.pause(); |
| input.replay(c); |
| actual.resume(); |
| }); |
| |
| test("closing after done", () { |
| var controller = new StreamController(sync: true); |
| controller.stream |
| .map((e) => e) |
| .transform( |
| new StreamTransformer.fromHandlers(handleData: (element, sink) { |
| sink.add(element); |
| }, handleDone: (sink) { |
| sink.close(); |
| })) |
| .listen(expectAsync((e) => expect(e, equals("foo")))); |
| |
| controller.add("foo"); |
| // Should not crash. |
| controller.close(); |
| }); |
| } |