// 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<String> resolveSymbolicLinks()
/// Resolves the path of a file system object relative to the current working
/// directory, resolving all symbolic links on the path and resolving
/// all .. and . path segments.
///
/// resolveSymbolicLinks uses the operating system's native file system API to
/// resolve the path, using the realpath function on linux and OS X, and the
/// GetFinalPathNameByHandle function on Windows. If the path does not point to
/// an existing file system object, resolveSymbolicLinks throws a
/// FileSystemException.
///
/// On Windows the .. segments are resolved before resolving the symbolic link,
/// and on other platforms the symbolic links are resolved to their target before
/// applying a .. that follows.
/// @description Check that a FileSystemException is thrown if the path does not
/// point to an existing file system object.
/// @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 file = new File(getTempFilePath(parent: sandbox));

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