LibTest/io/File/createSync_A03_t01.dart

// 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 createSync({bool recursive: false})
/// Synchronously create the file. Existing files are left untouched by
/// createSync. Calling createSync on an existing file might fail if there are
/// restrictive permissions on the file.
///
/// If recursive is false, the default, the file is created only if all
/// directories in the path exist. If recursive is true, all non-existing path
/// components are created.
///
/// Throws a FileSystemException if the operation fails.
/// @description Checks that existing files are left untouched by create
/// @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 tmp = getTempFileSync(parent: sandbox);
  tmp.writeAsStringSync("Existing file content");
  File file = new File(tmp.path);

  file.createSync();
  Expect.isTrue(file.existsSync());
  Expect.equals(tmp.path, file.path);
  Expect.equals("Existing file content", file.readAsStringSync());
}