| /* |
| * 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 RandomAccessFile openSync({FileMode mode: FileMode.read}) |
| * Synchronously open the file for random access operations. The result is a |
| * RandomAccessFile on which random access operations can be performed. Opened |
| * RandomAccessFiles must be closed using the RandomAccessFile.close method. |
| * |
| * See open for information on the mode argument. |
| * |
| * Throws a FileSystemException if the operation fails. |
| * @description Checks that this method open the file for random access |
| * operations. Test APPEND mode |
| * @author sgrekhov@unipro.ru |
| */ |
| import "dart:io"; |
| import "../../../Utils/expect.dart"; |
| import "../file_utils.dart"; |
| |
| main() async { |
| await inSandbox(_main); |
| } |
| |
| _main(Directory sandbox) async { |
| File file = getTempFileSync(parent: sandbox); |
| file.writeAsBytesSync([0, 1, 2, 3, 4]); |
| RandomAccessFile raFile = file.openSync(mode: FileMode.append); |
| Expect.equals(5, raFile.lengthSync()); |
| raFile.setPositionSync(1); |
| raFile.writeByteSync(0); |
| raFile.setPositionSync(0); |
| Expect.equals(0, raFile.readByteSync()); |
| Expect.equals(0, raFile.readByteSync()); |
| Expect.equals(2, raFile.readByteSync()); |
| Expect.equals(3, raFile.readByteSync()); |
| raFile.closeSync(); |
| } |