outputs: vec![
        (recipient(), Amount::from_sat(5_000)),
        (change(0), Amount::from_sat(5_000)),
        (change(0), Amount::from_sat(1_774)),
      ],
      target: Target::Postage,
    }
    .build()
    .unwrap();
  }

  #[test]
  fn do_not_select_already_inscribed_sats_for_cardinal_utxos() {
    let utxos = vec![
      (outpoint(1), Amount::from_sat(100)),
      (outpoint(2), Amount::from_sat(49 * COIN_VALUE)),
    ];

    pretty_assert_eq!(
      TransactionBuilder::new(
        satpoint(1, 0),
        BTreeMap::from([(satpoint(2, 10 * COIN_VALUE), inscription_id(1))]),
        utxos.into_iter().collect(),
        BTreeSet::new(),
        recipient(),
        [change(0), change(1)],
        FeeRate::try_from(1.0).unwrap(),
        Target::Postage,
      )
      .build_transaction(),
      Err(Error::NotEnoughCardinalUtxos)
    )
  }

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

    pretty_assert_eq!(
      TransactionBuilder::new(