| Index: mojo/public/dart/third_party/barback/test/stream_pool_test.dart
|
| diff --git a/mojo/public/dart/third_party/barback/test/stream_pool_test.dart b/mojo/public/dart/third_party/barback/test/stream_pool_test.dart
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..ed590f3a9f9617a587e52cb58998c1f0a9ad728b
|
| --- /dev/null
|
| +++ b/mojo/public/dart/third_party/barback/test/stream_pool_test.dart
|
| @@ -0,0 +1,219 @@
|
| +// Copyright (c) 2013, 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.
|
| +
|
| +library barback.test.stream_pool_test;
|
| +
|
| +import 'dart:async';
|
| +
|
| +import 'package:barback/src/utils.dart';
|
| +import 'package:barback/src/utils/stream_pool.dart';
|
| +import 'package:scheduled_test/scheduled_test.dart';
|
| +
|
| +import 'utils.dart';
|
| +
|
| +main() {
|
| + initConfig();
|
| +
|
| + group("buffered", () {
|
| + test("buffers events from multiple inputs", () {
|
| + var pool = new StreamPool<String>();
|
| +
|
| + var controller1 = new StreamController<String>();
|
| + pool.add(controller1.stream);
|
| + controller1.add("first");
|
| +
|
| + var controller2 = new StreamController<String>();
|
| + pool.add(controller2.stream);
|
| + controller2.add("second");
|
| +
|
| + // Call [toList] asynchronously to be sure that the events have been
|
| + // buffered beforehand and aren't just being received unbuffered.
|
| + expect(newFuture(() => pool.stream.toList()),
|
| + completion(equals(["first", "second"])));
|
| +
|
| + pumpEventQueue().then((_) => pool.close());
|
| + });
|
| +
|
| + test("buffers errors from multiple inputs", () {
|
| + var pool = new StreamPool<String>();
|
| +
|
| + var controller1 = new StreamController<String>();
|
| + pool.add(controller1.stream);
|
| + controller1.add("first");
|
| +
|
| + var controller2 = new StreamController<String>();
|
| + pool.add(controller2.stream);
|
| + controller2.add("second");
|
| + controller1.addError("third");
|
| + controller2.addError("fourth");
|
| + controller1.add("fifth");
|
| +
|
| + expect(newFuture(() {
|
| + return pool.stream.transform(new StreamTransformer.fromHandlers(
|
| + handleData: (data, sink) => sink.add(["data", data]),
|
| + handleError: (error, stackTrace, sink) {
|
| + sink.add(["error", error]);
|
| + })).toList();
|
| + }), completion(equals([
|
| + ["data", "first"],
|
| + ["data", "second"],
|
| + ["error", "third"],
|
| + ["error", "fourth"],
|
| + ["data", "fifth"]
|
| + ])));
|
| +
|
| + pumpEventQueue().then((_) => pool.close());
|
| + });
|
| +
|
| + test("buffers inputs from a broadcast stream", () {
|
| + var pool = new StreamPool<String>();
|
| + var controller = new StreamController<String>.broadcast();
|
| + pool.add(controller.stream);
|
| + controller.add("first");
|
| + controller.add("second");
|
| +
|
| + // Call [toList] asynchronously to be sure that the events have been
|
| + // buffered beforehand and aren't just being received unbuffered.
|
| + expect(newFuture(() => pool.stream.toList()),
|
| + completion(equals(["first", "second"])));
|
| +
|
| + pumpEventQueue().then((_) => pool.close());
|
| + });
|
| + });
|
| +
|
| + group("broadcast", () {
|
| + test("doesn't buffer inputs", () {
|
| + var pool = new StreamPool<String>.broadcast();
|
| +
|
| + var controller1 = new StreamController<String>.broadcast();
|
| + pool.add(controller1.stream);
|
| + controller1.add("first");
|
| +
|
| + var controller2 = new StreamController<String>.broadcast();
|
| + pool.add(controller2.stream);
|
| + controller2.add("second");
|
| +
|
| + // Call [toList] asynchronously to be sure that the events have been
|
| + // buffered beforehand and aren't just being received unbuffered.
|
| + expect(newFuture(() => pool.stream.toList()), completion(isEmpty));
|
| +
|
| + pumpEventQueue().then((_) => pool.close());
|
| + });
|
| +
|
| + test("doesn't buffer errors", () {
|
| + var pool = new StreamPool<String>.broadcast();
|
| +
|
| + var controller1 = new StreamController<String>.broadcast();
|
| + pool.add(controller1.stream);
|
| + controller1.addError("first");
|
| +
|
| + var controller2 = new StreamController<String>.broadcast();
|
| + pool.add(controller2.stream);
|
| + controller2.addError("second");
|
| +
|
| + expect(newFuture(() {
|
| + return pool.stream.transform(new StreamTransformer.fromHandlers(
|
| + handleData: (data, sink) => sink.add(data),
|
| + handleError: (error, stackTrace, sink) { sink.add(error); }))
|
| + .toList();
|
| + }), completion(isEmpty));
|
| +
|
| + pumpEventQueue().then((_) => pool.close());
|
| + });
|
| +
|
| + test("doesn't buffer inputs from a buffered stream", () {
|
| + var pool = new StreamPool<String>.broadcast();
|
| + var controller = new StreamController<String>();
|
| + pool.add(controller.stream);
|
| + controller.add("first");
|
| + controller.add("second");
|
| +
|
| + expect(pumpEventQueue().then((_) => pool.stream.toList()),
|
| + completion(isEmpty));
|
| +
|
| + pumpEventQueue().then((_) => pool.close());
|
| + });
|
| + });
|
| +
|
| + for (var type in ["buffered", "broadcast"]) {
|
| + group(type, () {
|
| + var pool;
|
| + var bufferedController;
|
| + var bufferedStream;
|
| + var bufferedSyncController;
|
| + var broadcastController;
|
| + var broadcastStream;
|
| + var broadcastSyncController;
|
| +
|
| + setUp(() {
|
| + if (type == "buffered") {
|
| + pool = new StreamPool<String>();
|
| + } else {
|
| + pool = new StreamPool<String>.broadcast();
|
| + }
|
| +
|
| + bufferedController = new StreamController<String>();
|
| + pool.add(bufferedController.stream);
|
| +
|
| + bufferedSyncController = new StreamController<String>(sync: true);
|
| + pool.add(bufferedSyncController.stream);
|
| +
|
| + broadcastController = new StreamController<String>.broadcast();
|
| + pool.add(broadcastController.stream);
|
| +
|
| + broadcastSyncController =
|
| + new StreamController<String>.broadcast(sync: true);
|
| + pool.add(broadcastSyncController.stream);
|
| + });
|
| +
|
| + test("emits events to a listener", () {
|
| + expect(pool.stream.toList(), completion(equals(["first", "second"])));
|
| +
|
| + bufferedController.add("first");
|
| + broadcastController.add("second");
|
| + pumpEventQueue().then((_) => pool.close());
|
| + });
|
| +
|
| + test("emits sync events synchronously", () {
|
| + var events = [];
|
| + pool.stream.listen(events.add);
|
| +
|
| + bufferedSyncController.add("first");
|
| + expect(events, equals(["first"]));
|
| +
|
| + broadcastSyncController.add("second");
|
| + expect(events, equals(["first", "second"]));
|
| + });
|
| +
|
| + test("emits async events asynchronously", () {
|
| + var events = [];
|
| + pool.stream.listen(events.add);
|
| +
|
| + bufferedController.add("first");
|
| + broadcastController.add("second");
|
| + expect(events, isEmpty);
|
| +
|
| + expect(pumpEventQueue().then((_) => events),
|
| + completion(equals(["first", "second"])));
|
| + });
|
| +
|
| + test("doesn't emit events from removed streams", () {
|
| + expect(pool.stream.toList(), completion(equals(["first", "third"])));
|
| +
|
| + bufferedController.add("first");
|
| + expect(pumpEventQueue().then((_) {
|
| + pool.remove(bufferedController.stream);
|
| + bufferedController.add("second");
|
| + }).then((_) {
|
| + broadcastController.add("third");
|
| + return pumpEventQueue();
|
| + }).then((_) {
|
| + pool.remove(broadcastController.stream);
|
| + broadcastController.add("fourth");
|
| + pool.close();
|
| + }), completes);
|
| + });
|
| + });
|
| + }
|
| +}
|
|
|