| // 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 |
| /// Future<RandomAccessFile> writeFrom( |
| /// List<int> buffer, [ |
| /// int start = 0, |
| /// int end |
| /// ]) |
| /// Writes from a List<int> to the file. It will read the buffer from index start |
| /// to index end. If start is omitted, it'll start from index 0. If end is |
| /// omitted, it will write to end of buffer. |
| /// |
| /// @description Checks that method writeFrom writes from a List<int> to file |
| /// from index start to index end and if end is omitted, it writes to end of |
| /// buffer. |
| /// @author ngl@unipro.ru |
| |
| import "dart:async"; |
| import "dart:io"; |
| import "../../../Utils/expect.dart"; |
| import "../file_utils.dart"; |
| |
| void check(int start) { |
| List<int> list = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]; |
| int len = list.length - start; |
| File file = getTempFileSync(); |
| asyncStart(); |
| Future<RandomAccessFile> raFile = file.open(mode: FileMode.write); |
| raFile.then((RandomAccessFile rf) { |
| Expect.equals(0, file.lengthSync()); |
| var f = rf.writeFrom(list, start); |
| f.then((RandomAccessFile file) { |
| Expect.equals(len, file.lengthSync()); |
| rf.setPositionSync(0); |
| List<int> l = file.readSync(len); |
| for (int i = 0; i < len; i++) { |
| Expect.isTrue(i + start == l[i]); |
| } |
| asyncEnd(); |
| }).whenComplete(() { |
| rf.closeSync(); |
| file.deleteSync(); |
| }); |
| }); |
| } |
| |
| main() { |
| for (int i = 0; i < 11; i++) { |
| check(i); |
| } |
| } |