private static void TestOpenExistingFile(DiskIo stream, FileHeaderBlock fat)
{
Guid id = Guid.NewGuid();
TransactionalEdit trans = new TransactionalEdit(stream);
//create 3 files
SubFileStream fs1 = trans.OpenFile(0);
SubFileStream fs2 = trans.OpenFile(1);
SubFileStream fs3 = trans.OpenFile(2);
//read from them and verify content.
SubFileStreamTest.TestSingleByteRead(fs1);
SubFileStreamTest.TestCustomSizeRead(fs2, 5);
SubFileStreamTest.TestCustomSizeRead(fs3, BlockDataLength + 20);
//rewrite bad data.
SubFileStreamTest.TestSingleByteWrite(fs2);
SubFileStreamTest.TestCustomSizeWrite(fs3, 5);
SubFileStreamTest.TestCustomSizeWrite(fs1, BlockDataLength + 20);
fs1.Dispose();
fs2.Dispose();
fs3.Dispose();
trans.CommitAndDispose();
}
private static void TestVerifyRollback(DiskIo stream, FileHeaderBlock fat)
{
Guid id = Guid.NewGuid();
TransactionalEdit trans = new TransactionalEdit(stream);
if (trans.Files.Count != 3)
{
throw new Exception();
}
//open files
SubFileStream fs1 = trans.OpenFile(0);
SubFileStream fs2 = trans.OpenFile(1);
SubFileStream fs3 = trans.OpenFile(2);
//read from them and verify content.
SubFileStreamTest.TestSingleByteRead(fs2);
SubFileStreamTest.TestCustomSizeRead(fs3, 5);
SubFileStreamTest.TestCustomSizeRead(fs1, BlockDataLength + 20);
fs1.Dispose();
fs2.Dispose();
fs3.Dispose();
trans.Dispose();
}
private static void TestCreateNewFile(DiskIo stream, FileHeaderBlock fat)
{
SubFileName id1 = SubFileName.CreateRandom();
SubFileName id2 = SubFileName.CreateRandom();
SubFileName id3 = SubFileName.CreateRandom();
TransactionalEdit trans = new TransactionalEdit(stream);
//create 3 files
SubFileStream fs1 = trans.CreateFile(id1);
SubFileStream fs2 = trans.CreateFile(id2);
SubFileStream fs3 = trans.CreateFile(id3);
if (fs1.SubFile.FileName != id1)
{
throw new Exception();
}
//write to the three files
SubFileStreamTest.TestSingleByteWrite(fs1);
SubFileStreamTest.TestCustomSizeWrite(fs2, 5);
SubFileStreamTest.TestCustomSizeWrite(fs3, BlockDataLength + 20);
//read from them and verify content.
SubFileStreamTest.TestCustomSizeRead(fs3, BlockDataLength + 20);
SubFileStreamTest.TestCustomSizeRead(fs2, 5);
SubFileStreamTest.TestSingleByteRead(fs1);
fs1.Dispose();
fs2.Dispose();
fs3.Dispose();
trans.CommitAndDispose();
}
private static void TestRollback(DiskIo stream, FileHeaderBlock fat)
{
SubFileName id1 = SubFileName.CreateRandom();
SubFileName id2 = SubFileName.CreateRandom();
SubFileName id3 = SubFileName.CreateRandom();
TransactionalEdit trans = new TransactionalEdit(stream);
//create 3 files additional files
SubFileStream fs21 = trans.CreateFile(id1);
SubFileStream fs22 = trans.CreateFile(id2);
SubFileStream fs23 = trans.CreateFile(id3);
//open files
SubFileStream fs1 = trans.OpenFile(0);
SubFileStream fs2 = trans.OpenFile(1);
SubFileStream fs3 = trans.OpenFile(2);
//read from them and verify content.
SubFileStreamTest.TestSingleByteRead(fs2);
SubFileStreamTest.TestCustomSizeRead(fs3, 5);
SubFileStreamTest.TestCustomSizeRead(fs1, BlockDataLength + 20);
//rewrite bad data.
SubFileStreamTest.TestSingleByteWrite(fs3);
SubFileStreamTest.TestCustomSizeWrite(fs1, 5);
SubFileStreamTest.TestCustomSizeWrite(fs2, BlockDataLength + 20);
fs1.Dispose();
fs2.Dispose();
fs3.Dispose();
fs21.Dispose();
fs22.Dispose();
fs23.Dispose();
trans.RollbackAndDispose();
}
