| /* |
| * 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 void truncateSync(int length) |
| * . . . |
| * Throws a FileSystemException if the operation fails. |
| * |
| * @description Checks that method truncateSync does not change the file length |
| * if length is equal to the file length. |
| * @author ngl@unipro.ru |
| */ |
| import "dart:async"; |
| import "dart:io"; |
| import "../../../Utils/expect.dart"; |
| import "../file_utils.dart"; |
| |
| main() { |
| File file = getTempFileSync(); |
| asyncStart(); |
| Future<RandomAccessFile> raFile = file.open(mode: FileMode.write); |
| raFile.then((RandomAccessFile rf) { |
| Expect.isNotNull(rf); |
| for (int i = 0; i < 10; i++) { |
| rf.writeByteSync((i + 1) & 0xff); |
| } |
| rf.truncateSync(10); |
| rf.closeSync(); |
| try { |
| rf.truncateSync(10); |
| Expect.fail("should not be here"); |
| } on Exception catch (e) { |
| Expect.isTrue(e is FileSystemException); |
| } |
| asyncEnd(); |
| }).whenComplete(() { |
| file.deleteSync(); |
| }); |
| } |