chore(api): use Weight in favor of u64 on Tx

Author: luisschwab

src/api.rs

@@ -126,7 +126,7 @@ pub struct Tx {
     /// The [`Transaction`] size in raw bytes (NOT virtual bytes).
     pub size: usize,
     /// The [`Transaction`]'s weight units.
-    pub weight: u64,
+    pub weight: Weight,
     /// The confirmation status of the [`Transaction`].
     pub status: TxStatus,
     /// The fee amount paid by the [`Transaction`], in satoshis.
@@ -411,11 +411,6 @@ impl Tx {
             })
             .collect()
     }
-
-    /// Get the weight of a [`Tx`].
-    pub fn weight(&self) -> Weight {
-        Weight::from_wu(self.weight)
-    }
 }
 
 fn deserialize_witness<'de, D>(d: D) -> Result<Vec<Vec<u8>>, D::Error>

src/lib.rs

@@ -574,7 +574,7 @@ mod test {
         assert_eq!(tx_info.txid, txid);
         assert_eq!(tx_info.to_tx(), tx_exp);
         assert_eq!(tx_info.size, tx_exp.total_size());
-        assert_eq!(tx_info.weight(), tx_exp.weight());
+        assert_eq!(tx_info.weight, tx_exp.weight());
         assert_eq!(tx_info.fee, tx_res.fee.unwrap().unsigned_abs());
         assert!(tx_info.status.confirmed);
         assert_eq!(tx_info.status.block_height, Some(tx_block_height));