public void TestZipper()
{
var fileSize = 1024 * 1024;
var bufferSize = 32 * 1024;
var dataContext = new DataContext();
var synchronizationContext = new SynchronizationContext();
FileGenerator.CreateOrReadCyclicFile(fileSize);
var fileName = FileGenerator.GetInputFileName(fileSize);
var segmentProvider = new SegmentProvider(false, bufferSize);
Zipper.Process(fileName, segmentProvider, CompressionMode.Compress, 100, dataContext, synchronizationContext);
Assert.AreEqual(fileSize / bufferSize + 1, dataContext.OutputData.Keys.Count());
}
[DataRow(32L * 1024 * 1024 * 1024)] // 32 Gb
public void TestFile(long fileSize)
{
var buffer = FileGenerator.CreateOrReadCyclicFile(fileSize);
var inputFilename = FileGenerator.GetInputFileName(fileSize);
var compressedFileName = $"{fileSize}compressed.test";
var decompressedFileName = $"{fileSize}decompressed.test";
var inputFileSize = 0L;
var sw = Stopwatch.StartNew();
using (var compressor = new GZipArchiver(inputFilename, compressedFileName, CompressionMode.Compress))
{
compressor.Process();
}
sw.Stop();
Console.WriteLine($"Compressed in {sw.Elapsed.TotalSeconds} s");
Assert.IsTrue(File.Exists(compressedFileName));
sw.Restart();
using (var compressor = new GZipArchiver(compressedFileName, decompressedFileName, CompressionMode.Decompress))
compressor.Process();
sw.Stop();
Console.WriteLine($"Decompressed in {sw.Elapsed.TotalSeconds} s");
Assert.IsTrue(File.Exists(decompressedFileName));
using (var file = File.OpenRead(decompressedFileName))
{
inputFileSize = new FileInfo(inputFilename).Length;
Assert.AreEqual(inputFileSize, file.Length);
var newData = new byte[buffer.Length];
long alreadyChecked = 0;
while (alreadyChecked < file.Length && alreadyChecked <= 100 * 1024 * 1024)
{
file.Read(newData, 0, buffer.Length);
CollectionAssert.AreEqual(buffer, newData);
alreadyChecked += buffer.Length;
}
}
}
public void TestZipper_Concurrency()
{
var fileSize = 1024 * 1024;
var bufferSize = 32 * 1024;
var dataContext = new DataContext();
var synchronizationContext = new SynchronizationContext();
FileGenerator.CreateOrReadCyclicFile(fileSize);
var fileName = FileGenerator.GetInputFileName(fileSize);
var segmentProvider = new SegmentProvider(false, bufferSize);
List <Thread> workerThreads = new List <Thread>();
for (var i = 0; i < 3; i++)
{
var workerThread = new Thread(
() =>
Zipper.Process(
fileName,
segmentProvider,
CompressionMode.Compress,
100,
dataContext,
synchronizationContext));
workerThread.Start();
workerThreads.Add(workerThread);
}
foreach (var workerThread in workerThreads)
{
workerThread.Join();
}
var lastElementIndex = fileSize / bufferSize;
Assert.AreEqual(lastElementIndex + 1, dataContext.OutputData.Keys.Count());
Assert.AreEqual(0, dataContext.OutputData[lastElementIndex].Data.Length);
}
