blob: 62960b75c849a4bb3d2dba141403631b8f339968 [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 Future<RandomAccessFile> flush()
/// Flushes the contents of the file to disk. Returns a Future<RandomAccessFile>
/// that completes with this RandomAccessFile when the flush operation completes.
///
/// @description Checks that method flush returns Future<RandomAccessFile> that
/// completes with this RandomAccessFile.
/// @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);
rf.writeByteSync(9);
var rfFlush = rf.flush();
Expect.isTrue(rfFlush is Future<RandomAccessFile>);
var list;
rfFlush.then((RandomAccessFile f) {
Expect.isTrue(f is RandomAccessFile);
Expect.isTrue(f == rf);
f.setPositionSync(0);
list = f.readSync(1);
Expect.equals(9, list[0]);
asyncEnd();
}).whenComplete(() {
rf.closeSync();
file.deleteSync();
});
});
}