public void Generate_check()
{
IList<SignatureInfo> sourceSignatureInfos;
IList<SignatureInfo> seedSignatureInfos;
using (var sourceSignatureRepository = CreateSignatureRepositoryFor("test"))
using (var seedSignatureRepository = CreateSignatureRepositoryFor("test"))
{
using (var generator = new SigGenerator())
{
seedSignatureInfos = generator.GenerateSignatures(GetSeedStream(), "test", seedSignatureRepository);
}
var sourceStream = GetSourceStream();
using (var generator = new SigGenerator())
{
sourceSignatureInfos = generator.GenerateSignatures(sourceStream, "test", sourceSignatureRepository);
}
var sourceSize = sourceStream.Length;
using (var tested = new NeedListGenerator(sourceSignatureRepository, seedSignatureRepository))
{
var result = tested.CreateNeedsList(seedSignatureInfos.Last(), sourceSignatureInfos.Last());
Assert.NotNull(result);
Assert.Equal(0, sourceSize - result.Sum(x => Convert.ToInt32(x.BlockLength)));
}
}
}
public void Should_be_the_same_signatures()
{
const int size = 1024 * 1024 * 5;
var randomStream = new RandomStream(size);
var buffer = new byte[size];
randomStream.Read(buffer, 0, size);
var stream = new MemoryStream(buffer);
var firstSigContentHashes = new List<string>();
using (var signatureRepository = new VolatileSignatureRepository("test"))
using (var rested = new SigGenerator())
{
var result = rested.GenerateSignatures(stream, "test", signatureRepository);
foreach (var signatureInfo in result)
{
using (var content = signatureRepository.GetContentForReading(signatureInfo.Name))
{
firstSigContentHashes.Add(content.GetMD5Hash());
}
}
}
stream.Position = 0;
var secondSigContentHashes = new List<string>();
using (var signatureRepository = new VolatileSignatureRepository("test"))
using (var rested = new SigGenerator())
{
var result = rested.GenerateSignatures(stream, "test", signatureRepository);
foreach (var signatureInfo in result)
{
using (var content = signatureRepository.GetContentForReading(signatureInfo.Name))
{
secondSigContentHashes.Add(content.GetMD5Hash());
}
}
}
Assert.Equal(firstSigContentHashes.Count, secondSigContentHashes.Count);
for (var i = 0; i < firstSigContentHashes.Count; i++)
{
Assert.Equal(firstSigContentHashes[i], secondSigContentHashes[i]);
}
}
public void Generate_check()
{
using (var signatureRepository = new VolatileSignatureRepository("test"))
using (var rested = new SigGenerator())
{
var result = rested.GenerateSignatures(_stream, "test", signatureRepository);
Assert.Equal(2, result.Count);
using (var content = signatureRepository.GetContentForReading(result[0].Name))
{
Assert.Equal("91b64180c75ef27213398979cc20bfb7", content.GetMD5Hash());
}
using (var content = signatureRepository.GetContentForReading(result[1].Name))
{
Assert.Equal("9fe9d408aed35769e25ece3a56f2d12f", content.GetMD5Hash());
}
}
}
public void Synchronize_file_with_different_beginning()
{
const int size = 5000;
var differenceChunk = new MemoryStream();
var sw = new StreamWriter(differenceChunk);
sw.Write("Coconut is Stupid");
sw.Flush();
var sourceContent = PrepareSourceStream(size);
sourceContent.Position = 0;
var seedContent = new CombinedStream(differenceChunk, sourceContent);
using (var sourceSignatureRepository = CreateSignatureRepositoryFor("test2"))
using (var seedSignatureRepository = CreateSignatureRepositoryFor("test1"))
{
IList<SignatureInfo> seedSignatureInfos;
using (var generator = new SigGenerator())
{
seedContent.Seek(0, SeekOrigin.Begin);
seedSignatureInfos = generator.GenerateSignatures(seedContent, "test1", seedSignatureRepository);
}
IList<SignatureInfo> sourceSignatureInfos;
using (var generator = new SigGenerator())
{
sourceContent.Seek(0, SeekOrigin.Begin);
sourceSignatureInfos = generator.GenerateSignatures(sourceContent, "test2", sourceSignatureRepository);
}
var sourceSize = sourceContent.Length;
using (var tested = new NeedListGenerator(seedSignatureRepository, sourceSignatureRepository))
{
var result = tested.CreateNeedsList(seedSignatureInfos.Last(), sourceSignatureInfos.Last());
Assert.NotNull(result);
Assert.Equal(2, result.Count);
Assert.Equal(0, sourceSize - result.Sum(x => Convert.ToInt32(x.BlockLength)));
}
}
}
public void Synchronize_file_with_different_sizes_and_completely_different_content()
{
var seedBuffer = new byte[1024 * 1024 * 2]; // 2 MB
new Random().NextBytes(seedBuffer);
var seedContent = new MemoryStream(seedBuffer);
var smallerBuffer = new byte[1024 * 1024];
new Random().NextBytes(smallerBuffer);
var changedContent = new MemoryStream(smallerBuffer);
using (var seedSignatureRepository = CreateSignatureRepositoryFor("seed"))
using (var sourceSignatureRepository = CreateSignatureRepositoryFor("source"))
{
IList<SignatureInfo> seedSignatureInfos;
using (var generator = new SigGenerator())
{
seedContent.Seek(0, SeekOrigin.Begin);
seedSignatureInfos = generator.GenerateSignatures(seedContent, "seed", seedSignatureRepository);
}
IList<SignatureInfo> sourceSignatureInfos;
using (var generator = new SigGenerator())
{
changedContent.Seek(0, SeekOrigin.Begin);
sourceSignatureInfos = generator.GenerateSignatures(changedContent, "source", sourceSignatureRepository);
}
var sourceSize = changedContent.Length;
using (var tested = new NeedListGenerator(seedSignatureRepository, sourceSignatureRepository))
{
var result = tested.CreateNeedsList(seedSignatureInfos.Last(), sourceSignatureInfos.Last());
Assert.NotNull(result);
Assert.Equal(0, sourceSize - result.Sum(x => Convert.ToInt32(x.BlockLength)));
}
}
}
public void Signatures_can_be_generated_on_the_same_repository()
{
const int size = 1024 * 1024 * 5;
var randomStream = new RandomStream(size);
var buffer = new byte[size];
randomStream.Read(buffer, 0, size);
var stream = new MemoryStream(buffer);
foreach (var fileName in new [] { "test", "content/test", "/content/test"})
{
using (var signatureRepository = new VolatileSignatureRepository(fileName))
using (var rested = new SigGenerator())
{
var signatures = signatureRepository.GetByFileName();
Assert.Equal(0, signatures.Count());
stream.Position = 0;
var result = rested.GenerateSignatures(stream, fileName, signatureRepository);
signatures = signatureRepository.GetByFileName();
Assert.Equal(2, signatures.Count());
stream.Position = 0;
result = rested.GenerateSignatures(stream, fileName, signatureRepository);
signatures = signatureRepository.GetByFileName();
Assert.Equal(2, signatures.Count());
}
}
}