assertNull(testMessage.getErrorData());
        }

        @Test
        @DisplayName("Should preserve signature bytes during decode")
        void testPreserveSignatureDuringDecode() throws SMBProtocolDecodingException {
            byte[] buffer = new byte[256];
            System.arraycopy(SMBUtil.SMB2_HEADER, 0, buffer, 0, 4);

            // Create signature pattern