| // 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. |
| |
| // Test merging streams. |
| library dart.test.stream_from_iterable; |
| |
| import "dart:async"; |
| import '../../../pkg/unittest/lib/unittest.dart'; |
| |
| main() { |
| test("stream-periodic3", () { |
| Stopwatch watch = new Stopwatch()..start(); |
| Stream stream = new Stream.periodic(const Duration(milliseconds: 1), |
| (x) => x); |
| stream.take(10).listen((_) { }, onDone: expectAsync0(() { |
| int microsecs = watch.elapsedMicroseconds; |
| // Give it some slack. The Stopwatch is more precise than the timers. |
| int millis = (microsecs + 200) ~/ 1000; |
| expect(millis, greaterThan(10)); |
| })); |
| }); |
| } |