sharpcompress/tests/SharpCompress.Test/Streams/LzmaStreamTests.cs

using System;
using System.IO;
using SharpCompress.Compressors.LZMA;
using Xunit;

namespace SharpCompress.Test.Streams
{
    public class LzmaStreamTests
    {
        [Fact]
        public void TestLzma2Decompress1Byte()
        {
            var properties = new byte[] { 0x01 };
            var compressedData = new byte[] { 0x01, 0x00, 0x00, 0x58, 0x00 };
            var lzma2Stream = new MemoryStream(compressedData);

            var decompressor = new LzmaStream(properties, lzma2Stream, 5, 1);
            Assert.Equal('X', decompressor.ReadByte());
        }

        private static byte[] lzmaData { get; } = new byte[] {
            0x5D, 0x00, 0x20, 0x00, 0x00, 0x48, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
            0x80, 0x24, 0x18, 0x2F, 0xEB, 0x20, 0x78, 0xBA, 0x78, 0x70, 0xDC, 0x43, 0x2C, 0x32, 0xC9,
            0xC3, 0x97, 0x4D, 0x10, 0x74, 0xE2, 0x20, 0xBF, 0x5A, 0xB4, 0xB3, 0xC4, 0x31, 0x80, 0x26,
            0x3E, 0x6A, 0xEA, 0x51, 0xFC, 0xE4, 0x8D, 0x54, 0x96, 0x05, 0xCC, 0x78, 0x59, 0xAC, 0xD4,
            0x21, 0x65, 0x8F, 0xA9, 0xC8, 0x0D, 0x9B, 0xE2, 0xC2, 0xF9, 0x7C, 0x3C, 0xDD, 0x4D, 0x38,
            0x04, 0x0B, 0xF8, 0x0B, 0x68, 0xA5, 0x93, 0x6C, 0x64, 0xAC, 0xCF, 0x71, 0x68, 0xE8, 0x69,
            0x25, 0xC6, 0x17, 0x28, 0xF1, 0x7C, 0xF1, 0xDC, 0x47, 0x51, 0x4D, 0x1E, 0x0E, 0x0B, 0x80,
            0x37, 0x24, 0x58, 0x80, 0xF7, 0xB4, 0xAC, 0x54, 0xF1, 0x0F, 0x7F, 0x0F, 0x0F, 0xF5, 0x9C,
            0xDE, 0x54, 0x4F, 0xA3, 0x7B, 0x20, 0xC5, 0xA8, 0x18, 0x3B, 0xED, 0xDC, 0x04, 0xF6, 0xFB,
            0x86, 0xE0, 0xAB, 0xB6, 0x87, 0x99, 0x92, 0x43, 0x7B, 0x2C, 0xCC, 0x31, 0x83, 0x90, 0xFF,
            0xF1, 0x76, 0x03, 0x90
        };

        private static byte[] lzmaResultData { get; } = new byte[] {
            0x01, 0x00, 0xFD, 0x01, 0x00, 0x00, 0x00, 0x00, 0xFA, 0x61, 0x18, 0x5F, 0x02, 0x00, 0x00,
            0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x01, 0x00,
            0x00, 0x00, 0x02, 0x00, 0xB4, 0x01, 0x00, 0x00, 0x00, 0x00, 0x3D, 0x61, 0xE5, 0x5E, 0x03,
            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
            0x12, 0x00, 0x00, 0x00, 0x02, 0x00, 0xB4, 0x01, 0x00, 0x00, 0x00, 0x00, 0xE2, 0x61, 0x18,
            0x5F, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x12, 0x00,
            0x00, 0x00, 0x29, 0x00, 0x00, 0x00, 0x01, 0x00, 0xFD, 0x01, 0x00, 0x00, 0x00, 0x00, 0x14,
            0x62, 0x18, 0x5F, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
            0x40, 0x00, 0x00, 0x00, 0x09, 0x00, 0x00, 0x00, 0x02, 0x00, 0xB4, 0x01, 0x00, 0x00, 0x00,
            0x00, 0x7F, 0x61, 0xE5, 0x5E, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
            0x00, 0x00, 0x3B, 0x00, 0x00, 0x00, 0xCB, 0x15, 0x00, 0x00, 0x02, 0x00, 0xB4, 0x01, 0x00,
            0x00, 0x00, 0x00, 0x7F, 0x61, 0xE5, 0x5E, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
            0x00, 0x00, 0x00, 0x00, 0x3B, 0x00, 0x00, 0x00, 0xCB, 0x15, 0x00, 0x00, 0x02, 0x00, 0xB4,
            0x01, 0x00, 0x00, 0x00, 0x00, 0x3D, 0x61, 0xE5, 0x5E, 0x07, 0x00, 0x00, 0x00, 0x00, 0x00,
            0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x12, 0x00, 0x00, 0x00, 0x02,
            0x00, 0xB4, 0x01, 0x00, 0x00, 0x00, 0x00, 0xFC, 0x96, 0x40, 0x5C, 0x08, 0x00, 0x00, 0x00,
            0x60, 0x00, 0x00, 0x00, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0xF8, 0x83, 0x12,
            0x00, 0xD4, 0x99, 0x00, 0x00, 0x43, 0x95, 0x00, 0x00, 0xEB, 0x7A, 0x00, 0x00, 0x40, 0x6F,
            0x00, 0x00, 0xD2, 0x6F, 0x00, 0x00, 0x67, 0x74, 0x00, 0x00, 0x02, 0x69, 0x00, 0x00, 0x76,
            0x79, 0x00, 0x00, 0x98, 0x66, 0x00, 0x00, 0x23, 0x25, 0x00, 0x00, 0x01, 0x00, 0xFD, 0x01,
            0x00, 0x00, 0x00, 0x00, 0x3B, 0x2F, 0xC0, 0x5F, 0x09, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
            0x00, 0x03, 0x00, 0x00, 0x00, 0x69, 0x00, 0x3D, 0x00, 0x0A, 0x00, 0x00, 0x00
        };

        [Fact]
        public void TestLzmaBuffer()
        {
            var input = new MemoryStream(lzmaData);
            using (var output = new MemoryStream())
            {
                var properties = new byte[5];
                input.Read(properties, 0, 5);

                var fileLengthBytes = new byte[8];
                input.Read(fileLengthBytes, 0, 8);
                var fileLength = BitConverter.ToInt64(fileLengthBytes, 0);

                var coder = new Decoder();
                coder.SetDecoderProperties(properties);
                coder.Code(input, output, input.Length, fileLength, null);

                Assert.Equal(output.ToArray(), lzmaResultData);
            }
        }
    }
}