public void TestRecoverBlocks()
{
long idFirst, idSecond, idThird;
using (TempFile file = new TempFile())
{
if (true)
{
FragmentedFile ff = FragmentedFile.CreateNew(file.TempPath, 512, 100, 2, FragmentedFile.OptionsDefault);
idFirst = ff.Create();
idSecond = ff.Create();
idThird = ff.Create();
ff.Delete(idFirst);
//Dangerous, only used for testing the case when ff was never disposed, nor GC'd
GC.SuppressFinalize(ff);
ff = null;
}
GC.Collect(0, GCCollectionMode.Forced);
GC.WaitForPendingFinalizers();
using (FragmentedFile f2 = new FragmentedFile(file.TempPath, 512))
{
Assert.IsTrue(f2.Create() < idSecond);
Assert.IsTrue(f2.Create() > idThird);
}
}
}
void TestCrud(FragmentedFile ff, int blockCount, int blockSize)
{
Dictionary <long, byte[]> data = new Dictionary <long, byte[]>();
//Create:
for (int i = 0; i < blockCount; i++)
{
data.Add(ff.Create(), null);
}
//Write:
foreach (long id in new List <long>(data.Keys))
{
using (Stream io = ff.Open(id, FileAccess.Write))
io.Write(data[id] = MakeBytes(blockSize), 0, blockSize);
}
//Read:
foreach (KeyValuePair <long, byte[]> kv in data)
{
using (Stream io = ff.Open(kv.Key, FileAccess.Read))
Assert.AreEqual(kv.Value, IOStream.ReadAllBytes(io));
}
//Enumerate:
Dictionary <long, byte[]> copy = new Dictionary <long, byte[]>(data);
foreach (KeyValuePair <long, Stream> fragment in ff.ForeachBlock(true, true, null))
{
Assert.AreEqual(copy[fragment.Key], IOStream.ReadAllBytes(fragment.Value));
Assert.IsTrue(copy.Remove(fragment.Key));
}
//Update:
foreach (long id in new List <long>(data.Keys))
{
Assert.AreEqual(data[id], IOStream.ReadAllBytes(ff.Open(id, FileAccess.Read)));
using (Stream io = ff.Open(id, FileAccess.Write))
io.Write(data[id] = MakeBytes(blockSize * 2), 0, blockSize * 2);
Assert.AreEqual(data[id], IOStream.ReadAllBytes(ff.Open(id, FileAccess.Read)));
using (Stream io = ff.Open(id, FileAccess.Write))
io.Write(data[id] = MakeBytes(blockSize / 2), 0, blockSize / 2);
Assert.AreEqual(data[id], IOStream.ReadAllBytes(ff.Open(id, FileAccess.Read)));
}
//Delete:
foreach (long id in new List <long>(data.Keys))
{
ff.Delete(id);
}
//Empty?
foreach (KeyValuePair <long, Stream> fragment in ff.ForeachBlock(true, true, null))
{
Assert.Fail();
}
}
