// 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<FileSystemEntity> delete({bool recursive: false})
/// Deletes this FileSystemEntity.
///
/// If the FileSystemEntity is a directory, and if recursive is false, the
/// directory must be empty. Otherwise, if recursive is true, the directory and
/// all sub-directories and files in the directories are deleted. Links are not
/// followed when deleting recursively. Only the link is deleted, not its target.
///
/// If recursive is true, the FileSystemEntity is deleted even if the type of the
/// FileSystemEntity doesn't match the content of the file system. This behavior
/// allows delete to be used to unconditionally delete any file system object.
///
/// Returns a Future<FileSystemEntity> that completes with this FileSystemEntity
/// when the deletion is done. If the FileSystemEntity cannot be deleted, the
/// future completes with an exception.
/// @description Checks that if the FileSystemEntity cannot be deleted, the
/// future completes with an exception.
/// @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 = getTempFileSync(parent: sandbox);
  file.deleteSync();

  asyncStart();
  await file.delete(recursive: true).then((deleted) {
    Expect.fail("FileSystemException expected");
  }, onError: (e) {
    Expect.isTrue(e is FileSystemException);
    asyncEnd();
  });
}