| // 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. |
| |
| // @dart = 2.9 |
| |
| /// @assertion int readIntoSync(List<int> buffer, [int start = 0, int end]) |
| /// Synchronously reads into an existing List<int> from the file. If start is |
| /// present, the bytes will be filled into buffer from at index start, otherwise |
| /// index 0. If end is present, the end - start bytes will be read into buffer, |
| /// otherwise up to buffer.length. If end == start nothing happens. |
| /// |
| /// @description Checks that method readIntoSync synchronously reads into an |
| /// existing List<int> from the file, and if start is set the bytes are filled |
| /// into buffer at index start. |
| /// @author ngl@unipro.ru |
| |
| import "dart:async"; |
| import "dart:io"; |
| import "../../../Utils/expect.dart"; |
| import "../file_utils.dart"; |
| |
| check(int start) { |
| 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); |
| } |
| List<int> list = new List<int>(20); |
| rf.setPositionSync(0); |
| var num = rf.readIntoSync(list, start); |
| Expect.isTrue(num is int); |
| for (int i = 0; i < num; i++) { |
| Expect.equals((i + 1) & 0xff, list[start + i]); |
| } |
| asyncEnd(); |
| rf.closeSync(); |
| }).whenComplete(() { |
| file.deleteSync(); |
| }); |
| } |
| |
| main() { |
| for (int i = 0; i <= 10; i++) { |
| check(i); |
| } |
| } |