let sig_vbytes = 17;
    let fee = FeeRate::try_from(fee_rate)
      .unwrap()
      .fee(commit_tx.vsize() + sig_vbytes)
      .to_sat();

    let reveal_value = commit_tx
      .output
      .iter()
      .map(|o| o.value)
      .reduce(|acc, i| acc + i)
      .unwrap();

    assert_eq!(reveal_value, 20_000 - fee);

    let fee = FeeRate::try_from(fee_rate)
      .unwrap()
      .fee(reveal_tx.vsize())
      .to_sat();

    assert_eq!(
      reveal_tx.output[0].value,
      20_000 - fee - (20_000 - commit_tx.output[0].value),
    );
  }

  #[test]
  fn inscribe_with_parent() {
    let utxos = vec![
      (outpoint(1), Amount::from_sat(10_000)),
      (outpoint(2), Amount::from_sat(20_000)),
    ];

    let mut inscriptions = BTreeMap::new();
    let parent_inscription = inscription_id(1);
    let parent_info = ParentInfo {
      destination: change(3),
      id: parent_inscription,
      location: SatPoint {
        outpoint: outpoint(1),
        offset: 0,
      },
      tx_out: TxOut {
        script_pubkey: change(0).script_pubkey(),