LibTest/io/File/readAsString_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<String> readAsString({Encoding encoding: utf8})
/// Read the entire file contents as a string using the given Encoding.
///
/// Returns a Future<String> that completes with the string once the file
/// contents has been read.
/// @description Checks that future completes with a FileSystemException if the
/// operation fails
/// @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.readAsString().then((data) {
    Expect.fail("FileSystemException expected");
  }, onError: (e) {
    Expect.isTrue(e is FileSystemException);
    asyncEnd();
  });
}