// 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.

// @dart = 2.9

/// @assertion Cogec<List<int>, R> fuse<R>(Codec<List<int>, 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 (List<int>) 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 ngl@unipro.ru

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

void check(Codec fused, List<int> expectedData) {
  Expect.listEquals(expectedData, fused.encode(expectedData));
  Expect.listEquals(expectedData, fused.decode(expectedData));
}

main() {
  ZLibCodec codec = new ZLibCodec();
  Codec inverted = codec.inverted;
  Codec fused = codec.fuse(inverted);

  for (int i = 0; i < 10; i++) {
    List<int> data = new List.generate(i, (int i) => i);
    check(fused, data);
  }
  check(fused, []);
}