public void CanCreateTransactionBuffersList()
{
Assert.DoesNotThrow(() =>
{
_buffersList = new TransactionBuffersList(_bufferManager);
});
}
public void CanPinNewBuffer()
{
_buffersList = new TransactionBuffersList(_bufferManager);
Assert.DoesNotThrow(() =>
{
_buffersList.PinNew(RandomFilename, new BasePageFormatter());
});
}
public void CannotGetUnusedBuffer()
{
_buffersList = new TransactionBuffersList(_bufferManager);
var block = new Block(RandomFilename, 0);
var buffer = _buffersList.GetBuffer(block);
Assert.IsNull(buffer);
}
public void CanPinBuffer()
{
_buffersList = new TransactionBuffersList(_bufferManager);
_ = _fileManager.Append(RandomFilename, out var block);
Assert.DoesNotThrow(() =>
{
_bufferManager.Pin(block);
});
}
public void CanPinMultipleTimes()
{
_buffersList = new TransactionBuffersList(_bufferManager);
var block = new Block(RandomFilename, 0);
Assert.DoesNotThrow(() =>
{
_buffersList.Pin(block);
_buffersList.Pin(block);
_buffersList.Pin(block);
});
}
public Transaction(
ITransactionNumberDispatcher numberDispatcher,
IBufferManager bufferManager,
IConcurrencyManager concurrencyManager,
IFileManager fileManager,
ILogManager logManager)
{
_numberDispatcher = numberDispatcher;
_concurrencyManager = concurrencyManager;
_fileManager = fileManager;
_bufferList = new TransactionBuffersList(bufferManager);
_transactionNumber = _numberDispatcher.GetNextTransactionNumber();
_recoveryManager = new RecoveryManager(bufferManager, logManager, _transactionNumber);
}