blob: 65f456e07518b4ac83d128585a47062a10f0f834 [file] [log] [blame]
// 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 Codec<S, R> fuse<R>(Codec<T, R> other)
/// Fuses this with other.
/// When encoding, the resulting codec encodes with this before encoding with
/// other.
/// When decoding, the resulting codec decodes with other before decoding with
/// this.
/// In some cases one needs to use the inverted codecs to be able to fuse them
/// correctly. That is, the output type of this (T) must match the input type of
/// the second codec other.
/// @description Checks that encoding with the resulting converter is equivalent
/// to converting with this before converting with other.
/// @author
import "dart:convert";
import "../../../Utils/expect.dart";
check(Encoding? encoding, String toEncode) {
Codec<List<int>, dynamic> inverted = (encoding as Encoding).inverted;
Codec fused = encoding.fuse(inverted);
Expect.equals(toEncode, fused.decode(toEncode));
Expect.equals(toEncode, fused.encode(toEncode));
main() {
check(Encoding.getByName("us-ascii"), "123abs-");
check(Encoding.getByName("iso-8859-1"), "âã");
check(Encoding.getByName("utf-8"), "Кириллица прекрасна");