Sigmund Cherem
fb29d0e96d
This allows to break a circular dependency between package:expect and package:async_helper, which will simplify the support for modular tests using package:modular_test. Change-Id: Ie48723d3f35d51a8fbe622e0158450e8104fe3f5 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/102140 Reviewed-by: Johnni Winther <johnniwinther@google.com>
29 lines
1002 B
Dart
29 lines
1002 B
Dart
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// Test merging streams.
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library dart.test.stream_from_iterable;
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import 'dart:async';
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import 'package:async_helper/async_minitest.dart';
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// The stopwatch is more precise than the Timer.
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// Some browsers (Firefox and IE so far) can trigger too early. So we add more
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// margin. We use identical(1, 1.0) as an easy way to know if the test is
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// compiled by dart2js.
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int get safetyMargin => identical(1, 1.0) ? 5 : 0;
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main() {
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test("stream-periodic3", () {
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Stopwatch watch = new Stopwatch()..start();
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Stream stream =
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new Stream.periodic(const Duration(milliseconds: 1), (x) => x);
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stream.take(10).listen((_) {}, onDone: expectAsync(() {
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int millis = watch.elapsedMilliseconds + safetyMargin;
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expect(millis, greaterThanOrEqualTo(10));
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}));
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});
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}
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