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Issue 14070010: Refactor Future constructors. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Added co19 issue number. Created 7 years, 8 months ago
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1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
2 // for details. All rights reserved. Use of this source code is governed by a 2 // for details. All rights reserved. Use of this source code is governed by a
3 // BSD-style license that can be found in the LICENSE file. 3 // BSD-style license that can be found in the LICENSE file.
4 4
5 library test_utils; 5 library test_utils;
6 6
7 import 'dart:io'; 7 import 'dart:io';
8 import 'dart:async'; 8 import 'dart:async';
9 9
10 import 'package:scheduled_test/scheduled_test.dart'; 10 import 'package:scheduled_test/scheduled_test.dart';
11 import 'package:scheduled_test/src/utils.dart'; 11 import 'package:scheduled_test/src/utils.dart';
12 import 'package:scheduled_test/src/mock_clock.dart' as mock_clock; 12 import 'package:scheduled_test/src/mock_clock.dart' as mock_clock;
13 13
14 import 'metatest.dart'; 14 import 'metatest.dart';
15 15
16 export 'package:scheduled_test/src/utils.dart'; 16 export 'package:scheduled_test/src/utils.dart';
17 17
18 /// Wraps [input] to provide a timeout. If [input] completes before 18 /// Wraps [input] to provide a timeout. If [input] completes before
19 /// [milliseconds] have passed, then the return value completes in the same way. 19 /// [milliseconds] have passed, then the return value completes in the same way.
20 /// However, if [milliseconds] pass before [input] has completed, [onTimeout] is 20 /// However, if [milliseconds] pass before [input] has completed, [onTimeout] is
21 /// run and its result is passed to [input] (with chaining, if it returns a 21 /// run and its result is passed to [input] (with chaining, if it returns a
22 /// [Future]). 22 /// [Future]).
23 /// 23 ///
24 /// Note that timing out will not cancel the asynchronous operation behind 24 /// Note that timing out will not cancel the asynchronous operation behind
25 /// [input]. 25 /// [input].
26 Future timeout(Future input, int milliseconds, onTimeout()) { 26 Future timeout(Future input, int milliseconds, onTimeout()) {
27 var completer = new Completer(); 27 var completer = new Completer();
28 var timer = new Timer(new Duration(milliseconds: milliseconds), () { 28 var timer = new Timer(new Duration(milliseconds: milliseconds), () {
29 chainToCompleter(new Future.of(onTimeout), completer); 29 chainToCompleter(new Future.sync(onTimeout), completer);
30 }); 30 });
31 input.then((value) { 31 input.then((value) {
32 if (completer.isCompleted) return; 32 if (completer.isCompleted) return;
33 timer.cancel(); 33 timer.cancel();
34 completer.complete(value); 34 completer.complete(value);
35 }).catchError((error) { 35 }).catchError((error) {
36 if (completer.isCompleted) return; 36 if (completer.isCompleted) return;
37 timer.cancel(); 37 timer.cancel();
38 completer.completeError(error); 38 completer.completeError(error);
39 }); 39 });
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52 /// Sets up a timeout for every metatest in this file. 52 /// Sets up a timeout for every metatest in this file.
53 void setUpTimeout() { 53 void setUpTimeout() {
54 metaSetUp(() { 54 metaSetUp(() {
55 // TODO(nweiz): We used to only increase the timeout to 10s for the Windows 55 // TODO(nweiz): We used to only increase the timeout to 10s for the Windows
56 // bots, but the Linux and Mac bots have started taking upwards of 5s when 56 // bots, but the Linux and Mac bots have started taking upwards of 5s when
57 // running pumpEventQueue, so we're increasing the timeout across the board 57 // running pumpEventQueue, so we're increasing the timeout across the board
58 // (see issue 9248). 58 // (see issue 9248).
59 currentSchedule.timeout = new Duration(seconds: 10); 59 currentSchedule.timeout = new Duration(seconds: 10);
60 }); 60 });
61 } 61 }
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