in src/crc.rs [131:140]
fn test_crc_read() {
let buf = vec![1, 2, 3, 4, 5];
let mut read_buf = vec![0; 16];
let mut slice = buf.as_slice();
let mut crc_reader = CRC64Reader::new(&mut slice);
crc_reader.read_to_end(&mut read_buf).unwrap();
assert_eq!(crc_reader.checksum(), 0xFB04_60DE_0638_3654);
assert_eq!(crc_reader.checksum(), crc_reader.crc64);
}