LibTest/io/File/readAsString_A02_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 this method reads the entire file contents as lines
/// of text using the given Encoding. Test encoding argument
/// @author sgrekhov@unipro.ru

import "dart:io";
import "dart:convert";
import "../../../Utils/expect.dart";
import "../file_utils.dart";

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

_main(Directory sandbox) async {
  Encoding? encoding = Encoding.getByName("iso-8859-1");
  File file = getTempFileSync(parent: sandbox);

  IOSink sink = file.openWrite(encoding: encoding!);
  sink.writeCharCode(0xe2);
  sink.writeCharCode(0xa);
  sink.writeCharCode(0xe3);
  asyncStart();
  await sink.close().then((_) async {
    await file.readAsString(encoding: encoding).then((data) {
      Expect.equals("â\nã", data);
      asyncEnd();
    });
  });
}