blob: 35eb30d78798c1cf59fe07a8a32aa0fa831b08eb [file] [log] [blame]
// 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 positionSync()
/// Synchronously gets the current byte position in the file.
/// Throws a FileSystemException if the operation fails.
///
/// @description Checks that method positionSync returns the current byte
/// position in the file.
/// @author ngl@unipro.ru
import "dart:async";
import "dart:io";
import "../../../Utils/expect.dart";
import "../file_utils.dart";
main() {
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);
}
var rfPos = rf.positionSync();
Expect.isTrue(rfPos is int);
Expect.isTrue(rfPos == 10);
rf.setPositionSync(3);
rfPos = rf.positionSync();
Expect.isTrue(rfPos is int);
Expect.isTrue(rfPos == 3);
asyncEnd();
rf.closeSync();
}).whenComplete(() {
file.deleteSync();
});
}