public void ViewIO()
{
SparseMemoryStream memStream = new SparseMemoryStream();
memStream.SetLength(1024);
ThreadSafeStream tss = new ThreadSafeStream(memStream);
SparseStream altView = tss.OpenView();
// Check positions are independant
tss.Position = 100;
Assert.Equal(0, altView.Position);
Assert.Equal(100, tss.Position);
// Check I/O is synchronous
byte[] buffer = new byte[200];
tss.WriteByte(99);
altView.Read(buffer, 0, 200);
Assert.Equal(99, buffer[100]);
// Check positions are updated correctly
Assert.Equal(200, altView.Position);
Assert.Equal(101, tss.Position);
}
public void Extents()
{
SparseMemoryStream memStream = new SparseMemoryStream(new SparseMemoryBuffer(1), FileAccess.ReadWrite);
memStream.SetLength(1024);
ThreadSafeStream tss = new ThreadSafeStream(memStream);
SparseStream altView = tss.OpenView();
tss.Position = 100;
tss.WriteByte(99);
List <StreamExtent> extents = new List <StreamExtent>(altView.Extents);
Assert.Equal(1, extents.Count);
Assert.Equal(100, extents[0].Start);
Assert.Equal(1, extents[0].Length);
extents = new List <StreamExtent>(altView.GetExtentsInRange(10, 300));
Assert.Equal(1, extents.Count);
Assert.Equal(100, extents[0].Start);
Assert.Equal(1, extents[0].Length);
}