assert_eq!(invoice.expiry_time(), Duration::from_secs(54321));
assert_eq!(invoice.min_final_cltv_expiry_delta(), 144);
assert_eq!(invoice.fallbacks(), vec![&Fallback::PubKeyHash(PubkeyHash::from_slice(&[0;20]).unwrap())]);
assert_eq!(invoice.expiry_time(), Duration::from_secs(54321));
assert_eq!(invoice.min_final_cltv_expiry_delta(), 144);
assert_eq!(invoice.fallbacks(), vec![&Fallback::PubKeyHash(PubkeyHash::from_slice(&[0;20]).unwrap())]);