| // 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 writeAsBytesSync( |
| /// List<int> bytes, { |
| /// FileMode mode: FileMode.write, |
| /// bool flush: false |
| /// }) |
| /// Synchronously write a list of bytes to a file. |
| /// |
| /// Opens the file, writes the list of bytes to it and closes the file. |
| /// |
| /// By default writeAsBytesSync creates the file for writing and truncates the |
| /// file if it already exists. In order to append the bytes to an existing file, |
| /// pass FileMode.append as the optional mode parameter. |
| /// |
| /// If the flush argument is set to true data written will be flushed to the file |
| /// system before returning. |
| /// |
| /// Throws a FileSystemException if the operation fails. |
| /// @description Checks that by default writeAsBytesSync creates the file for |
| /// writing and truncates the file if it already exists |
| /// @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([1, 1, 1, 1, 1]); |
| file.writeAsBytesSync([3, 1, 4, 1, 5]); |
| Expect.isTrue(file.existsSync()); |
| Expect.listEquals([3, 1, 4, 1, 5], file.readAsBytesSync()); |
| } |