public void TestAddBigInt()
{
BlobBuilder builder = new BlobBuilder();
BigInteger value = new BigInteger("12398259028592293582039293420948023");
builder.AddBigIntBlob(value);
byte[] valueBytes = value.ToByteArrayUnsigned();
//Assert.That(valueBytes[0], Is.EqualTo(0));
byte[] expected = new byte[valueBytes.Length + 4];
Array.Copy(valueBytes.Length.ToBytes(), expected, 4);
Array.Copy(valueBytes, 0, expected, 4, valueBytes.Length);
Assert.That(builder.GetBlob(), Is.EqualTo(expected));
}