// 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<Link> rename(String newPath)
/// Renames this link. Returns a Future<Link> that completes with a Link instance
/// for the renamed link.
///
/// If newPath identifies an existing link, that link is replaced. If newPath
/// identifies an existing file or directory, the operation fails and the future
/// completes with an exception.
/// @description Checks that If newPath identifies an existing file, the
/// operation fails and the future completes with an exception.
///
/// @note The test should run with the Administrator priveleges on Windows.
/// Dart API Spec reads:
/// In order to create a symbolic link on Windows, Dart must be run in
/// Administrator mode or the system must have Developer Mode enabled, otherwise
/// a FileSystemException will be raised with ERROR_PRIVILEGE_NOT_HELD set as
/// the errno when this call is made.
///
/// @author sgrekhov@unipro.ru
/// @issue 30697

import "dart:io";
import "../../../Utils/expect.dart";
import "../file_utils.dart";

main() async {
  await inSandbox(_main);
}

_main(Directory sandbox) async {
  Link link = getTempLinkSync(parent: sandbox);
  File file = getTempFileSync(parent: sandbox);

  asyncStart();
  await link.rename(file.path).then((renamed) {
    Expect.fail("FileSystemException expected");
  }, onError: (e) {
    Expect.isTrue(e is FileSystemException);
    asyncEnd();
  });
}