public void TestRoundtrip(string filename)
{
// Load
byte[] decompressed = File.ReadAllBytes(filename);
if (filename.EndsWith(".fse", StringComparison.OrdinalIgnoreCase))
{
var ms = new MemoryStream();
using (var fse = new FseStream(new MemoryStream(decompressed), CompressionMode.Decompress, true))
{
fse.CopyTo(ms);
}
decompressed = ms.ToArray();
}
// Compress
var compressedStream = new MemoryStream();
using (var fse = new FseStream(compressedStream, CompressionMode.Compress, true))
{
var ms = new MemoryStream(decompressed);
ms.CopyTo(fse);
}
// Decompress
compressedStream.Seek(0, SeekOrigin.Begin);
var decompressedStream = new MemoryStream();
using (var fse = new FseStream(compressedStream, CompressionMode.Decompress, true))
{
fse.CopyTo(decompressedStream);
}
// Compare
decompressedStream.ToArray().AsSpan().SequenceCompareTo(decompressed);
}
public void TestStreamCompress()
{
var ms = new MemoryStream(_decompressedData);
var nullStream = new NullWriteStream();
using var fse = new FseStream(nullStream, CompressionMode.Compress, true);
ms.CopyTo(fse);
}
public void Setup()
{
using Stream stream = typeof(Program).Assembly.GetManifestResourceStream("FiniteStateEntropy.Benchmarks." + FileName);
var ms = new MemoryStream();
using var fse = new FseStream(stream, CompressionMode.Decompress, true);
fse.CopyTo(ms);
_decompressedData = ms.ToArray();
}
public void TestStreamDecompress()
{
byte[] buffer = _buffer;
var ms = new MemoryStream(_compressedData, false);
var fse = new FseStream(ms, CompressionMode.Decompress, true);
fse.ValidateChecksum = ValidateChecksum;
int readSize;
do
{
readSize = fse.Read(buffer);
} while (readSize != 0);
}
public void TestDecompress(string filename, string sha256)
{
using var ms = new MemoryStream();
using var fs = new FileStream(filename, FileMode.Open, FileAccess.Read);
using var fse = new FseStream(fs, CompressionMode.Decompress, true);
fse.CopyTo(ms);
ms.Seek(0, SeekOrigin.Begin);
byte[] actual = SHA256.Create().ComputeHash(ms);
byte[] expected = HexHelper.StringToByteArray(sha256);
Assert.True(actual.AsSpan().SequenceEqual(expected));
}
