LibTest/io/Link/update_A01_t03.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<Link> update(String target)
 * Updates the link. Returns a Future<Link> that completes with the link when it
 * has been updated. Calling update on a non-existing link will complete its
 * returned future with an exception.
 *
 * On the Windows platform, this will only work with directories, and the target
 * directory must exist.
 * @description Check that this method updates the link. Test Link as a
 * target
 * @author sgrekhov@unipro.ru
 */
import "dart:io";
import "../../../Utils/expect.dart";
import "../file_utils.dart";

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

_main(Directory sandbox) async {
  Directory target1 = getTempDirectorySync(parent: sandbox);
  Directory target2 = getTempDirectorySync(parent: sandbox);
  Link link = getTempLinkSync(target: target1.path, parent: sandbox);
  Link newTarget = getTempLinkSync(target: target2.path, parent: sandbox);

  asyncStart();
  await link.update(newTarget.path).then((Link l) {
    Expect.equals(newTarget.path, l.targetSync());
    asyncEnd();
  });
}