public void TestCompressionWithConfig(int size)
{
var strategy = new ArithmeticCodingStrategy(size);
var data = new byte[TestBlockSize];
for (int i = 0; i < TestBlockSize; i++)
{
data[i] = (byte)(i * 128 + 1);
}
var memStream = new MemoryStream();
var compressingStream = new BruteCompressingStream(new BinaryWriter(memStream), TestBlockSize, strategy);
compressingStream.Write(data, 0, TestBlockSize);
compressingStream.Flush();
memStream.Seek(0, SeekOrigin.Begin);
var decompressingStream = new BruteUncompressingStream(new BinaryReader(memStream));
var decompressingReader = new BinaryReader(decompressingStream);
var readBlock = decompressingReader.ReadBytes(TestBlockSize);
Assert.AreEqual(data, readBlock);
}
public void TestCompressionWithConfig(ExternalCompressorConfig externalCompressorConfig, bool checkReduction)
{
var catCompressionConfig = externalCompressorConfig;
var strategy = new ExternalCompressionStrategy(catCompressionConfig);
var data = new byte[TestBlockSize];
for (int i = 0; i < TestBlockSize; i++)
{
data[i] = (byte)(i * 5);
}
var memStream = new MemoryStream();
var compressingStream = new BruteCompressingStream(new BinaryWriter(memStream), 65000, strategy);
compressingStream.Write(data, 0, TestBlockSize);
compressingStream.Flush();
if (checkReduction)
{
Assert.Less(memStream.Position, TestBlockSize);
Console.WriteLine("Compressed {0} to {1} ({2}%)", TestBlockSize, memStream.Position,
memStream.Position * 100 / TestBlockSize);
}
memStream.Seek(0, SeekOrigin.Begin);
var decompressingStream = new BruteUncompressingStream(new BinaryReader(memStream));
var decompressingReader = new BinaryReader(decompressingStream);
var readBlock = decompressingReader.ReadBytes(TestBlockSize);
Assert.AreEqual(data, readBlock);
}
public void TestSelectionStrategy()
{
var data = new byte[TestSize];
for (int i = 0; i < TestSize; i++)
{
data[i] = (byte)i;
}
var compressors = new ICompressionStrategy[TestSize];
for (int i = 0; i < TestSize; i++)
{
compressors[i] = new MockStrategy((byte)i);
}
var strategy = new BruteCompressionStrategy(compressors);
var memStream = new MemoryStream();
var compressingStream = new BruteCompressingStream(new BinaryWriter(memStream), 1, strategy);
compressingStream.Write(data, 0, TestSize);
compressingStream.Flush();
Assert.AreEqual(memStream.Position, TestSize * 4);
Console.WriteLine("Compressed {0} to {1} ({2}%)", TestSize, memStream.Position,
memStream.Position * 100 / TestSize);
}