Leaf Petersen
3d6ad7b3a2
Change-Id: I00ffa8f6f85cede8badd4d7082da4603f998956c Reviewed-on: https://dart-review.googlesource.com/40470 Reviewed-by: Jenny Messerly <jmesserly@google.com>
31 lines
903 B
Dart
31 lines
903 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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import 'package:async_helper/async_helper.dart';
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import "package:expect/expect.dart";
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import 'dart:async';
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class MyFuture<T> implements Future<T> {
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Future<S> then<S>(FutureOr<S> valueHandler(T x), {Function onError}) {
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scheduleMicrotask(() {
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valueHandler(null);
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});
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return null;
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}
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catchError(_, {test}) => null;
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whenComplete(_) => null;
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asStream() => null;
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timeout(Duration timeLimit, {void onTimeout()}) => null;
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}
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main() {
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asyncStart();
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Completer completer = new Completer();
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completer.complete(new MyFuture());
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Expect.isTrue(completer.isCompleted);
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Expect.throws(() => completer.complete(42));
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completer.future.then((_) => asyncEnd());
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}
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