| // 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 synchronously open the file for random |
| /// access operations. Test that RandomAccessFile can be randomly accessed |
| /// @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.read); |
| Expect.isNotNull(raFile); |
| raFile.setPositionSync(1); |
| Expect.listEquals([1, 2], raFile.readSync(2)); |
| raFile.closeSync(); |
| } |