public void AppendAndGet_WithSimpleData_ShouldAppendAndGetCorrectly()
{
//Arrange
var data = Guid.NewGuid().ToByteArray();
var capacity = data.Length;
//Action
IndexData indexData;
using (var storage = new FileStorage(_storageFilePath, capacity))
{
indexData = storage.Append(new MemoryStream(data));
}
//Assert
using (var storage = new FileStorage(_storageFilePath, capacity))
{
using (var resultStream = storage.Get(indexData))
{
byte[] hash1, hash2;
Md5Helper.ComputeHashes(data, resultStream, out hash1, out hash2);
Assert.IsTrue(hash1.SequenceEqual(hash2));
}
}
}
public void Rollback_WhenAnyErrorHappen_ShouldRollback()
{
//Arrange
var data = Guid.NewGuid().ToByteArray();
var capacity = data.Length;
//Action
IndexData indexData;
using (var storage = new FileStorage(_storageFilePath, capacity))
{
indexData = storage.Append(new MemoryStream(data));
try
{
storage.Append(null);
}
catch (Exception)
{
storage.Rollback();
}
}
//Assert
using (var storage = new FileStorage(_storageFilePath, capacity))
{
using (var resultStream = storage.Get(indexData))
{
byte[] hash1, hash2;
Md5Helper.ComputeHashes(data, resultStream, out hash1, out hash2);
Assert.IsTrue(hash1.SequenceEqual(hash2));
}
}
}
public void AppendAndGet_WithBigData_ShouldAppendAndGetCorrectly()
{
//Arrange
const long step = Int32.MaxValue / 100;
var buffer = new byte[step];
for (var i = 0; i < buffer.Length; i++)
{
var value = (byte)(i % 2 == 0 ? 0 : 1);
buffer[i] = value;
}
var capacity = buffer.Length;
//Action
IndexData indexData;
using (var storage = new FileStorage(_storageFilePath, capacity))
{
indexData = storage.Append(new MemoryStream(buffer));
}
//Assert
using (var storage = new FileStorage(_storageFilePath, capacity))
{
using (var resultStream = storage.Get(indexData))
{
byte[] hash1, hash2;
Md5Helper.ComputeHashes(buffer, resultStream, out hash1, out hash2);
Assert.IsTrue(hash1.SequenceEqual(hash2));
}
}
}
public void Get_AfterResized_ShouldGetAppendedData()
{
//Arrange
var datas = new[] { Guid.NewGuid().ToByteArray(), Guid.NewGuid().ToByteArray() };
var capacity = datas.Sum(d => d.Length) - 16;
//Action
using (var storage = new FileStorage(_storageFilePath, capacity))
{
var indexData = storage.Append(new MemoryStream(datas[0]));
using (var resultStream = storage.Get(indexData))
{
storage.Append(new MemoryStream(datas[1]));
byte[] hash1, hash2;
Md5Helper.ComputeHashes(datas[0], resultStream, out hash1, out hash2);
//Assert
Assert.IsTrue(hash1.SequenceEqual(hash2));
}
}
}
public void Append_WithOverCapacity_IncreaseMemoryMappedFileCapacity()
{
//Arrange
var datas = new[] { Guid.NewGuid().ToByteArray(), Guid.NewGuid().ToByteArray(), Guid.NewGuid().ToByteArray() };
var capacity = datas.Sum(d => d.Length) - 16;
//Action
using (var storage = new FileStorage(_storageFilePath, capacity))
{
foreach (var data in datas)
{
storage.Append(new MemoryStream(data));
}
}
//Assert
using (var storage = new FileStorage(_storageFilePath, capacity))
{
var offset = DefaultSizes.CursorHolderSize;
foreach (var data in datas)
{
using (var resultStream = storage.Get(new IndexData
{
Offset = offset,
Md5Hash = null,
Size = data.Length
}))
{
byte[] hash1, hash2;
Md5Helper.ComputeHashes(data, resultStream, out hash1, out hash2);
Assert.IsTrue(hash1.SequenceEqual(hash2));
}
offset += SizeOfGuid;
}
}
}