FeeRate::try_from(1.0).unwrap(),
        Target::Value(Amount::from_sat(1))
      )
      .build_transaction(),
      Err(Error::Dust {
        output_value: Amount::from_sat(1),
        dust_value: Amount::from_sat(294)
      })
    )
  }

  #[test]
  fn do_not_select_outputs_which_do_not_pay_for_their_own_fee_at_default_fee_rate() {
    let utxos = vec![
      (outpoint(1), Amount::from_sat(1_000)),
      (outpoint(2), Amount::from_sat(100)),
    ];

    pretty_assert_eq!(
      TransactionBuilder::new(
        satpoint(1, 0),
        BTreeMap::new(),
        utxos.into_iter().collect(),
        BTreeSet::new(),
        recipient(),
        [change(0), change(1)],
        FeeRate::try_from(1.0).unwrap(),
        Target::Value(Amount::from_sat(1000))
      )
      .build_transaction(),
      Err(Error::NotEnoughCardinalUtxos),
    )
  }

  #[test]
  fn do_not_select_outputs_which_do_not_pay_for_their_own_fee_at_higher_fee_rate() {
    let utxos = vec![
      (outpoint(1), Amount::from_sat(1_000)),
      (outpoint(2), Amount::from_sat(500)),