// 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. | |
import "dart:async"; | |
import "dart:io"; | |
import "package:async_helper/async_helper.dart"; | |
import "package:expect/expect.dart"; | |
void testPauseResumeCancelStream() { | |
asyncStart(); | |
Directory.systemTemp.createTemp('file_stream').then((d) { | |
var file = new File("${d.path}/file"); | |
new File(Platform.executable).openRead().pipe(file.openWrite()) | |
.then((_) { | |
var subscription; | |
subscription = file.openRead().listen((data) { | |
subscription.pause(); | |
subscription.resume(); | |
void close() { | |
d.deleteSync(recursive: true); | |
asyncEnd(); | |
} | |
var future = subscription.cancel(); | |
if (future != null) { | |
future.whenComplete(close); | |
} else { | |
close(); | |
} | |
}, onDone: () { | |
Expect.fail('the stream was canceled, onDone should not happend'); | |
}); | |
}); | |
}); | |
} | |
void testStreamIsEmpty() { | |
asyncStart(); | |
Directory.systemTemp.createTemp('file_stream').then((d) { | |
var file = new File("${d.path}/file"); | |
new File(Platform.executable).openRead().pipe(file.openWrite()) | |
.then((_) { | |
// isEmpty will cancel the stream after first data event. | |
file.openRead().isEmpty.then((empty) { | |
Expect.isFalse(empty); | |
d.deleteSync(recursive: true); | |
asyncEnd(); | |
}); | |
}); | |
}); | |
} | |
void main() { | |
testPauseResumeCancelStream(); | |
testStreamIsEmpty(); | |
} |