public void Writer_Should_Accurately_Write_Files_When_Blocks_Received_Randomly()
{
var fileLength = 10000000;
var fileBuffer = CreateRandomFile(fileLength);
var destFilePath = Path.Combine(Path.GetTempPath(), $"{Guid.NewGuid()}.dat");
var blocksCount = 100;
var blockSize = fileLength / blocksCount;
var blockIndexes = new int[blocksCount];
// set the indexes
blockIndexes.ForEach((item, index) => blockIndexes[index] = index);
// shuffle the indexes
blockIndexes.Shuffle();
using (var writer = new BufferedStreamWriter(destFilePath, fileLength))
{
foreach (var index in blockIndexes)
{
var startPos = index * blockSize;
var endPos = startPos + blockSize;
var blockBuffer = GetBlock(fileBuffer, startPos, endPos);
writer.WriteFileBlock(blockBuffer, index);
}
}
var originalFileHash = Helpers.ComputeMd5Hash(fileBuffer);
var destFileHash = Helpers.ComputeFileMd5Hash(destFilePath);
//cleanup
File.Delete(destFilePath);
Assert.AreEqual(originalFileHash, destFileHash);
}
public void Writer_Should_Be_Thread_Safe()
{
var fileLength = 10000000;
var fileBuffer = CreateRandomFile(fileLength);
var destFilePath = Path.Combine(Path.GetTempPath(), $"{Guid.NewGuid()}.dat");
var blocksCount = 100;
var blockSize = fileLength / blocksCount;
var parallelOptions = new ParallelOptions
{
MaxDegreeOfParallelism = 5
};
using (var writer = new BufferedStreamWriter(destFilePath, fileLength))
{
Parallel.For(0, blocksCount, index =>
{
var startPos = index * blockSize;
var endPos = startPos + blockSize;
var blockBuffer = GetBlock(fileBuffer, startPos, endPos);
writer.WriteFileBlock(blockBuffer, index);
});
}
var originalFileHash = Helpers.ComputeMd5Hash(fileBuffer);
var destFileHash = Helpers.ComputeFileMd5Hash(destFilePath);
//cleanup
File.Delete(destFilePath);
Assert.AreEqual(originalFileHash, destFileHash);
}
public void Writer_Should_Accurately_Write_Files()
{
var fileLength = 10000000;
var fileBuffer = CreateRandomFile(fileLength);
var destFilePath = Path.Combine(Path.GetTempPath(), $"{Guid.NewGuid()}.dat");
var blocksCount = 100;
var blockSize = fileLength / blocksCount;
using (var writer = new BufferedStreamWriter(destFilePath, fileLength))
{
for (var i = 0; i < blocksCount; i++)
{
var startPos = i * blockSize;
var endPos = startPos + blockSize;
var blockBuffer = GetBlock(fileBuffer, startPos, endPos);
writer.WriteFileBlock(blockBuffer, i);
}
}
var originalFileHash = Helpers.ComputeMd5Hash(fileBuffer);
var destFileHash = Helpers.ComputeFileMd5Hash(destFilePath);
//cleanup
File.Delete(destFilePath);
Assert.AreEqual(originalFileHash, destFileHash);
}