in src/hashes.rs [175:182]
fn test_compute_hashchains() {
let seed = [0u8; 32];
let chains = compute_hash_chains::<Blake3>(&seed, 3, 4, 2);
assert_eq!(chains.len(), 3);
assert_eq!(chains[0].len(), 3);
assert_eq!(chains[1].len(), 4);
assert_eq!(chains[2].len(), 4);
}