in src/hashes.rs [154:172]
fn test_full_hash_chain() {
use blake3::Hasher as Blake3;
let chain = full_hash_chain::<Blake3>(b"01234567890123456789012345678901", 3);
assert_eq!(chain.len(), 3);
assert_eq!(
hex::encode(chain[0]),
"3031323334353637383930313233343536373839303132333435363738393031"
);
assert_eq!(
hex::encode(chain[1]),
"1952cbec4fc2d03d99a121bdae24cb8333a6e8944ccf1f5ac4c3b4f4ee744edf"
);
assert_eq!(
hex::encode(chain[2]),
"df327beebc850ce697953eb99ecdf8f2979b5f103a73c45aa4b1415192032ef6"
);
}