public void TransactionDamage()
{
var itself = Constants.Itself;
var tempDatabaseFilename = Path.GetTempFileName();
var tempTransactionLogFilename = Path.GetTempFileName();
// Commit
using (var memoryManager = new UInt64LinksMemoryManager(tempDatabaseFilename))
using (var links = new UInt64Links(memoryManager, tempTransactionLogFilename))
{
using (var transaction = links.BeginTransaction())
{
var l1 = links.CreateAndUpdate(itself, itself);
var l2 = links.CreateAndUpdate(itself, itself);
Global.Trash = links.Update(l2, l2, l1, l2);
links.Delete(l1);
transaction.Commit();
}
Global.Trash = links.Count();
}
Global.Trash = FileHelpers.ReadAll<UInt64Links.Transition>(tempTransactionLogFilename);
// Damage database
FileHelpers
.WriteFirst(tempTransactionLogFilename, new UInt64Links.Transition { TransactionId = 555 });
// Try load damaged database
try
{
// TODO: Fix
using (var memoryManager = new UInt64LinksMemoryManager(tempDatabaseFilename))
using (var links = new UInt64Links(memoryManager, tempTransactionLogFilename))
{
Global.Trash = links.Count();
}
}
catch (NotSupportedException ex)
{
Assert.True(ex.Message == "Database is damaged, autorecovery is not supported yet.");
}
Global.Trash = FileHelpers
.ReadAll<UInt64Links.Transition>(tempTransactionLogFilename);
File.Delete(tempDatabaseFilename);
File.Delete(tempTransactionLogFilename);
}
public void Bug1Test()
{
var tempDatabaseFilename = Path.GetTempFileName();
var tempTransactionLogFilename = Path.GetTempFileName();
var itself = Constants.Itself;
// User Code Error (Autoreverted), some data saved
try
{
ulong l1;
ulong l2;
using (var memoryManager = new UInt64LinksMemoryManager(tempDatabaseFilename))
using (var links = new UInt64Links(memoryManager, tempTransactionLogFilename))
{
l1 = links.CreateAndUpdate(itself, itself);
l2 = links.CreateAndUpdate(itself, itself);
l2 = links.Update(l2, l2, l1, l2);
links.CreateAndUpdate(l2, itself);
links.CreateAndUpdate(l2, itself);
}
Global.Trash = FileHelpers.ReadAll<UInt64Links.Transition>(tempTransactionLogFilename);
using (var memoryManager = new UInt64LinksMemoryManager(tempDatabaseFilename))
using (var links = new UInt64Links(memoryManager, tempTransactionLogFilename))
{
using (var transaction = links.BeginTransaction())
{
l2 = links.Update(l2, l1);
links.Delete(l2);
ExceptionThrower();
transaction.Commit();
}
Global.Trash = links.Count();
}
}
catch
{
Global.Trash = FileHelpers
.ReadAll<UInt64Links.Transition>(tempTransactionLogFilename);
}
File.Delete(tempDatabaseFilename);
File.Delete(tempTransactionLogFilename);
}
public void TransactionCommit()
{
var itself = Constants.Itself;
var tempDatabaseFilename = Path.GetTempFileName();
var tempTransactionLogFilename = Path.GetTempFileName();
// Commit
using (var memoryManager = new UInt64LinksMemoryManager(tempDatabaseFilename))
using (var links = new UInt64Links(memoryManager, tempTransactionLogFilename))
{
using (var transaction = links.BeginTransaction())
{
var l1 = links.CreateAndUpdate(itself, itself);
var l2 = links.CreateAndUpdate(itself, itself);
Global.Trash = links.Update(l2, l2, l1, l2);
links.Delete(l1);
transaction.Commit();
}
Global.Trash = links.Count();
}
Global.Trash = FileHelpers.ReadAll<UInt64Links.Transition>(tempTransactionLogFilename);
}