LibTest/io/File/create_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 Future<File> create({bool recursive: false})
/// Create the file. Returns a Future<File> that completes with the file when it
/// has been created.
///
/// 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.
///
/// Existing files are left untouched by create. Calling create on an existing
/// file might fail if there are restrictive permissions on the file.
///
/// Completes the future with 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);
  asyncStart();
  await file.create().then((File created) {
    Expect.isTrue(created.existsSync());
    Expect.equals(tmp.path, created.path);
    Expect.equals("Existing file content", created.readAsStringSync());
    asyncEnd();
  });
}