public virtual void TestWriteForBOffLen()
{
var zeroBytes = new byte[20];
_output.WriteBytes(zeroBytes, 0, 20);
var bytes = new byte[20];
Array.Copy(_output.Buffer, 0, bytes, 0, 20);
Assert.AreEqual(zeroBytes, bytes);
Assert.AreEqual(20, _output.Position);
}
