public void ReadOctetStringTest()
{
var reader = fromHexString("6401020304");
var str = BitConverter.ToString(reader.ReadOctetString());
Assert.IsTrue(str == "01-02-03-04");
reader = fromHexString("7D0807060504030201");
str = BitConverter.ToString(reader.ReadOctetString(7));
Assert.IsTrue(str == "07-06-05-04-03-02-01");
}