public void testGzipStream()
{
// make sure compression works, file should be smaller
string sample = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "files", "fp.log");
byte[] uncompressed = File.ReadAllBytes(sample);
int before = uncompressed.Length;
byte[] compressed;
int after = 0;
// test gzip stream compression code
using (MemoryStream compressStream = new MemoryStream())
using (ZopfliStream compressor = new ZopfliStream(compressStream, ZopfliFormat.ZOPFLI_FORMAT_GZIP))
{
compressor.Write(uncompressed, 0, before);
compressor.Close();
compressed = compressStream.ToArray();
after = compressed.Length;
}
before.Should().BeGreaterThan(after);
// make sure we can decompress the file using built-in .net
byte[] decompressedBytes = new byte[before];
using (MemoryStream tempStream = new MemoryStream(compressed))
using (System.IO.Compression.GZipStream decompressionStream = new System.IO.Compression.GZipStream(tempStream, System.IO.Compression.CompressionMode.Decompress))
{
decompressionStream.Read(decompressedBytes, 0, before);
}
uncompressed.Should().Equal(decompressedBytes);
// use built-in .net compression and make sure zopfil is smaller
int after_builtin = 0;
using (MemoryStream compressStream = new MemoryStream())
using (System.IO.Compression.GZipStream compressor = new System.IO.Compression.GZipStream(compressStream, System.IO.Compression.CompressionLevel.Optimal))
{
compressor.Write(uncompressed, 0, before);
compressor.Close();
after_builtin = compressStream.ToArray().Length;
}
after_builtin.Should().BeGreaterThan(after);
}
public void testDeflateStream()
{
// make sure compression works, file should be smaller
byte[] uncompressed = File.ReadAllBytes("files/fp.log");
int before = uncompressed.Length;
byte[] compressed;
int after = 0;
// test deflate stream compression code
using (MemoryStream compressStream = new MemoryStream())
using (ZopfliStream compressor = new ZopfliStream(compressStream, ZopfliFormat.ZOPFLI_FORMAT_DEFLATE))
{
compressor.Write(uncompressed, 0, before);
compressor.Close();
compressed = compressStream.ToArray();
after = compressed.Length;
}
before.Should().BeGreaterThan(after);
// make sure we can decompress the file using built-in .net
byte[] decompressedBytes = new byte[before];
using (System.IO.Compression.DeflateStream decompressionStream = new System.IO.Compression.DeflateStream(new MemoryStream(compressed), System.IO.Compression.CompressionMode.Decompress))
{
decompressionStream.Read(decompressedBytes, 0, before);
}
uncompressed.Should().Equal(decompressedBytes);
// use built-in .net compression and make sure zopfil is smaller
int after_builtin = 0;
using (MemoryStream compressStream = new MemoryStream())
using (System.IO.Compression.DeflateStream compressor = new System.IO.Compression.DeflateStream(compressStream, System.IO.Compression.CompressionLevel.Optimal))
{
compressor.Write(uncompressed, 0, before);
compressor.Close();
after_builtin = compressStream.ToArray().Length;
}
after_builtin.Should().BeGreaterThan(after);
}