}
    .parent()
    .is_none());
  }

  #[test]
  fn inscription_with_parent_field_longer_than_txid_and_index_has_no_parent() {
    assert!(Inscription {
      parent: Some(vec![1; 37]),
      ..Default::default()
    }
    .parent()
    .is_none());
  }

  #[test]
  fn inscription_with_parent_field_index_with_trailing_zeroes_and_fixed_length_has_parent() {
    let mut parent = vec![1; 36];

    parent[35] = 0;

    assert!(Inscription {
      parent: Some(parent),
      ..Default::default()
    }
    .parent()
    .is_some());
  }

  #[test]
  fn inscription_with_parent_field_index_with_trailing_zeroes_and_variable_length_has_no_parent() {
    let mut parent = vec![1; 35];

    parent[34] = 0;

    assert!(Inscription {
      parent: Some(parent),
      ..Default::default()
    }
    .parent()
    .is_none());
  }

  #[test]
  fn inscription_parent_txid_is_deserialized_correctly() {
    assert_eq!(
      Inscription {
        parent: Some(vec![
          0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e,