// Copyright (c) 2023, Sudipto Chandra
// All rights reserved. Check LICENSE file for details.

// ignore: library_annotations
@Tags(['vm-only'])

import 'package:hashlib/hashlib.dart';
import 'package:test/test.dart';

const seed = 0x9E3779B1;
const data = <int>[
  158, 255, 31, 75, 94, 83, 47, 221, 181, 84, 77, 42, 149, 43, 87, 174, 93, //
  186, 116, 233, 211, 166, 76, 152, 48, 96, 192, 128, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
];

void main() {
  group('XXHash64 test', () {
    test('xxh64sum', () {
      final input = String.fromCharCodes(data);
      expect(xxh64sum(input), "0eab543384f878ad");
    });
    test('xxh64code', () {
      final input = String.fromCharCodes(data);
      final output = 0x0eab543384f878ad;
      expect(xxh64code(input), output);
    });

    test('with seed = 0 and an empty string', () {
      expect(xxh64.convert([]).hex(), "ef46db3751d8e999");
    });
    test('with seed = 0 and a single letter', () {
      expect(xxh64.convert([data[0]]).hex(), "4fce394cc88952d8");
    });
    test('with seed = 0 and 14 letters', () {
      expect(xxh64.convert(data.take(14).toList()).hex(), "cffa8db881bc3a3d");
    });
    test('with seed = 0 and 101 letters', () {
      expect(xxh64.convert(data).hex(), "0eab543384f878ad");
    });

    test('with a seed and an empty string', () {
      final input = <int>[];
      expect(xxh64.withSeed(seed).convert(input).hex(), "ac75fda2929b17ef");
    });

    test('with a seed and a single letter', () {
      final input = <int>[data[0]];
      expect(xxh64.withSeed(seed).hex(input), "739840cb819fa723");
    });

    test('with a seed and 14 letters', () {
      final input = data.take(14).toList();
      expect(xxh64.withSeed(seed).convert(input).hex(), "5b9611585efcc9cb");
    });

    test('with a seed and 101 letters', () {
      expect(xxh64.withSeed(seed).convert(data).hex(), "caa65939306f1e21");
    });

    test('with 32-byte message', () {
      final input = "string of 32-bytes long for test";
      final output = "eb3f9d9890ca89b3";
      expect(xxh64sum(input), output);
    });

    test('with 64-byte message', () {
      final input = "string of 64-bytes for test. "
          "twice the size of 32-byte string.";
      final output = "0f6ebfbce5c11a1b";
      expect(xxh64sum(input), output);
    });
  });
}