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();
  });
}