starred/sharpcompress
1
0
Fork 0
mirror of https://github.com/adamhathcock/sharpcompress.git synced 2026-02-13 13:35:28 +00:00
Code Issues 975 Packages Projects Releases 23 Wiki Activity
Files
copilot/support-multi-threading-path
sharpcompress/tests/SharpCompress.Test/Streams/LzmaStreamTests.cs
Adam Hathcock c53ca372f2 don't use pools in tests
2025-10-31 11:39:57 +00:00

602 lines
9.8 KiB
C#
Raw Permalink Blame History

using System;
using System.Buffers;
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; } =
[
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,
];
/// <summary>
/// The decoded data for <see cref="LzmaData"/>.
/// </summary>
private static byte[] LzmaResultData { get; } =
[
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);
}
[Fact]
public void TestLzmaStreamEncodingWritesData()
{
using var inputStream = new MemoryStream(LzmaResultData);
using MemoryStream outputStream = new();
using var lzmaStream = new LzmaStream(LzmaEncoderProperties.Default, false, outputStream);
inputStream.CopyTo(lzmaStream);
lzmaStream.Close();
Assert.NotEqual(0, outputStream.Length);
}
[Fact]
public void TestLzmaEncodingAccuracy()
{
var input = new MemoryStream(LzmaResultData);
var compressed = new MemoryStream();
var lzmaEncodingStream = new LzmaStream(LzmaEncoderProperties.Default, false, compressed);
input.CopyTo(lzmaEncodingStream);
lzmaEncodingStream.Close();
compressed.Position = 0;
var output = new MemoryStream();
DecompressLzmaStream(
lzmaEncodingStream.Properties,
compressed,
compressed.Length,
output,
LzmaResultData.LongLength
);
Assert.Equal(output.ToArray(), LzmaResultData);
}
private static void DecompressLzmaStream(
byte[] properties,
Stream compressedStream,
long compressedSize,
Stream decompressedStream,
long decompressedSize
)
{
var lzmaStream = new LzmaStream(
properties,
compressedStream,
compressedSize,
-1,
null,
false
);
var buffer = new byte[1024];
long totalRead = 0;
while (totalRead < decompressedSize)
{
var toRead = (int)Math.Min(buffer.Length, decompressedSize - totalRead);
var read = lzmaStream.Read(buffer, 0, toRead);
if (read > 0)
{
decompressedStream.Write(buffer, 0, read);
totalRead += read;
}
else
{
break;
}
}
}
}
Reference in New Issue View Git Blame Copy Permalink