public void TestRevertWithChanges()
{
using (TempFile temp = new TempFile())
{
byte[] sample = new byte[1024];
new Random().NextBytes(sample);
List <uint> handles = new List <uint>();
using (TransactedCompoundFile file = new TransactedCompoundFile(temp.TempPath))
{
for (int i = 0; i < 1000; i++)
{
var hid = file.Create();
handles.Add(hid);
file.Write(hid, sample, i, sample.Length - i);
CompareBytes(sample, i, sample.Length - i, IOStream.ReadAllBytes(file.Read(hid)));
}
file.Commit();
}
using (TransactedCompoundFile file = new TransactedCompoundFile(temp.TempPath))
{
byte[] dummy = new byte[1024];
for (int i = 0; i < 1000; i++)
{
file.Write(handles[i], dummy, 0, dummy.Length);
file.Delete(handles[i]);
}
file.Rollback();
for (int i = 0; i < 1000; i++)
{
CompareBytes(sample, i, sample.Length - i, IOStream.ReadAllBytes(file.Read(handles[i])));
}
}
}
}
static void ExersizeFile(ManualResetEvent stop, TransactedCompoundFile file)
{
const int LIMIT = 512 * 512 / 4 - 512 * 3;
Random r = new Random();
Dictionary <uint, byte[]> state = new Dictionary <uint, byte[]>();
while (true)
{
while (state.Count < 1000)
{
uint h = file.Create();
byte[] bytes = new byte[r.Next(5) == 0 ? r.Next(512) : r.Next(LIMIT)];
r.NextBytes(bytes);
file.Write(h, bytes, 0, bytes.Length);
state.Add(h, bytes);
if (stop.WaitOne(0, false))
{
return;
}
}
foreach (var kv in state)
{
Assert.AreEqual(0, BinaryComparer.Compare(kv.Value, IOStream.ReadAllBytes(file.Read(kv.Key))));
if (stop.WaitOne(0, false))
{
return;
}
}
List <KeyValuePair <uint, byte[]> > capture = new List <KeyValuePair <uint, byte[]> >(state);
for (int i = 0; i < capture.Count; i += r.Next(4))
{
uint h = capture[i].Key;
byte[] bytes = new byte[r.Next(512)];
r.NextBytes(bytes);
file.Write(h, bytes, 0, bytes.Length);
state[h] = bytes;
Assert.AreEqual(0, BinaryComparer.Compare(bytes, IOStream.ReadAllBytes(file.Read(h))));
if (stop.WaitOne(0, false))
{
return;
}
}
for (int i = 0; i < capture.Count; i += 1 + r.Next(4))
{
uint h = capture[i].Key;
file.Delete(h);
state.Remove(h);
if (stop.WaitOne(0, false))
{
return;
}
}
}
}
public void RandomTest()
{
Dictionary <uint, byte[]> store = new Dictionary <uint, byte[]>();
using (TempFile temp = new TempFile())
{
uint id;
byte[] bytes;
using (TransactedCompoundFile test = new TransactedCompoundFile(new TransactedCompoundFile.Options(temp.TempPath)
{
BlockSize = 512, CreateNew = true
}))
{
for (int i = 0; i < 10000; i++)
{
switch (i < 1000 ? 0 : rand.Next(3))
{
case 0:
{
id = test.Create();
bytes = RandomBytes(rand.Next(1000));
store.Add(id, bytes);
test.Write(id, bytes, 0, bytes.Length);
break;
}
case 1:
{
id = RandomPick(store.Keys);
bytes = store[id];
CompareBytes(bytes, 0, bytes.Length, IOStream.ReadAllBytes(test.Read(id)));
break;
}
case 2:
{
id = RandomPick(store.Keys);
Assert.IsTrue(store.Remove(id));
test.Delete(id);
break;
}
}
}
foreach (var kv in store)
{
CompareBytes(kv.Value, 0, kv.Value.Length, IOStream.ReadAllBytes(test.Read(kv.Key)));
}
}
}
}
public void TestLargeWrite()
{
using (TempFile temp = new TempFile())
{
var options = new TransactedCompoundFile.Options(temp.TempPath)
{
BlockSize = 512
};
byte[] sample = new byte[options.MaxWriteSize];
new Random().NextBytes(sample);
List <uint> handles = new List <uint>();
using (TransactedCompoundFile file = new TransactedCompoundFile(options))
{
for (int i = 0; i < 2; i++)
{
var hid = file.Create();
handles.Add(hid);
file.Write(hid, sample, i, sample.Length - i);
CompareBytes(sample, i, sample.Length - i, IOStream.ReadAllBytes(file.Read(handles[i])));
}
file.Commit();
}
long size = temp.Info.Length;
using (TransactedCompoundFile file = new TransactedCompoundFile(options))
{
for (int i = 0; i < 2; i++)
{
CompareBytes(sample, i, sample.Length - i, IOStream.ReadAllBytes(file.Read(handles[i])));
file.Delete(handles[i]);
}
file.Commit();
Assert.AreEqual(size, temp.Info.Length);
for (int i = 0; i < 252; i++)
{
var hid = file.Create();
handles.Add(hid);
file.Write(hid, sample, i, 300);
}
file.Commit();
Assert.AreEqual(size, temp.Info.Length);
file.Create();
Assert.AreNotEqual(size, temp.Info.Length);
}
}
}
public void SimpleTest()
{
uint handle;
byte[] bytes = RandomBytes(2140);
using (TempFile temp = new TempFile())
{
using (TransactedCompoundFile test = new TransactedCompoundFile(new TransactedCompoundFile.Options(temp.TempPath)
{
BlockSize = 512, CreateNew = true
}))
{
Assert.AreEqual(TransactedCompoundFile.FirstIdentity, test.Create());
test.Write(TransactedCompoundFile.FirstIdentity, Encoding.UTF8.GetBytes("Roger was here."), 0, 15);
Assert.AreEqual("Roger was here.", Encoding.UTF8.GetString(IOStream.ReadAllBytes(test.Read(TransactedCompoundFile.FirstIdentity))));
for (int i = 0; i < 10; i++)
{
var id = test.Create();
test.Write(id, bytes, i, 300);
if (i % 2 == 0)
{
test.Delete(id);
}
}
handle = test.Create();
test.Write(handle, bytes, 1000, bytes.Length - 1000);
CompareBytes(bytes, 1000, bytes.Length - 1000, IOStream.ReadAllBytes(test.Read(handle)));
test.Write(handle, bytes, 0, bytes.Length);
CompareBytes(bytes, 0, bytes.Length, IOStream.ReadAllBytes(test.Read(handle)));
test.Commit();
}
using (TransactedCompoundFile test = new TransactedCompoundFile(new TransactedCompoundFile.Options(temp.TempPath)
{
BlockSize = 512, CreateNew = false
}))
{
Assert.AreEqual("Roger was here.", Encoding.UTF8.GetString(IOStream.ReadAllBytes(test.Read(TransactedCompoundFile.FirstIdentity))));
CompareBytes(bytes, 0, bytes.Length, IOStream.ReadAllBytes(test.Read(handle)));
}
}
}