LibTest/io/ZLibEncoder/dictionary_A01_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.

// @dart = 2.9

/// @assertion List<int> dictionary
/// Initial compression dictionary.
/// It should consist of strings (byte sequences) that are likely to be
/// encountered later in the data to be compressed, with the most commonly used
/// strings preferably put towards the end of the dictionary. Using a dictionary
/// is most useful when the data to be compressed is short and can be predicted
/// with good accuracy; the data can then be compressed better than with the
/// default empty dictionary.
/// @description Checks that [dictionary] is set correctly with values null or
/// List<int>.
/// @author ngl@unipro.ru

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

main() {
  List<int> data = [1,2,3];
  ZLibEncoder encoder = new ZLibEncoder(dictionary: data);
  Expect.listEquals(data, encoder.dictionary);
  encoder = new ZLibEncoder(dictionary: null);
  Expect.isNull(encoder.dictionary);
}