| // Copyright (c) 2017, 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. |
| |
| /// @assertion |
| /// Future<RandomAccessFile> lock([ |
| /// FileLock mode = FileLock.exclusive, |
| /// int start = 0, |
| /// int end = -1 |
| /// ]) |
| /// Locks the file or part of the file. |
| /// |
| /// By default an exclusive lock will be obtained, but that can be overridden by |
| /// the mode argument. |
| /// |
| /// @description Checks that method lock returns Future<RandomAccessFile> that |
| /// completes with this RandomAccessFile. |
| /// @author ngl@unipro.ru |
| |
| import "dart:async"; |
| import "dart:io"; |
| import "../../../Utils/expect.dart"; |
| import "../file_utils.dart"; |
| |
| check(FileLock lock) { |
| File file = getTempFileSync(); |
| var rf = file.openSync(mode: FileMode.write); |
| file.writeAsBytesSync(new List.filled(10, 0)); |
| asyncStart(); |
| var rfLock = rf.lock(lock); |
| Expect.isTrue(rfLock is Future<RandomAccessFile>); |
| Expect.runtimeIsType<Future<RandomAccessFile>>(rfLock); |
| rfLock.then((RandomAccessFile f) { |
| Expect.isTrue(f == rf); |
| asyncEnd(); |
| }).whenComplete(() { |
| rf.unlockSync(); |
| rf.closeSync(); |
| file.deleteSync(); |
| }); |
| } |
| |
| main() { |
| check(FileLock.shared); |
| check(FileLock.exclusive); |
| check(FileLock.blockingShared); |
| check(FileLock.blockingExclusive); |
| } |