feat(core): improved debug format for Bytes (#1658)

* feat(core): improved debug format for Bytes

* update changelog

CHANGELOG.md

@@ -85,6 +85,7 @@
 - [#1535](https://github.com/gakonst/ethers-rs/pull/1535) Add support to Aurora and Aurora testnet networks.
 - [#1632](https://github.com/gakonst/ethers-rs/pull/1632) Re-export `H32` from `ethabi`.
 - [#1634](https://github.com/gakonst/ethers-rs/pull/1634) Derive missing `Clone`, `Copy` and `Debug` impls in ethers-etherscan.
+- Bytes debug format now displays hex literals [#1658](https://github.com/gakonst/ethers-rs/pull/1658)
 
 ## ethers-contract-abigen
 

ethers-core/src/types/bytes.rs

@@ -10,7 +10,7 @@ use std::{
 use thiserror::Error;
 
 /// Wrapper type around Bytes to deserialize/serialize "0x" prefixed ethereum hex strings
-#[derive(Clone, Debug, Default, PartialEq, Eq, Hash, Serialize, Deserialize, Ord, PartialOrd)]
+#[derive(Clone, Default, PartialEq, Eq, Hash, Serialize, Deserialize, Ord, PartialOrd)]
 pub struct Bytes(
     #[serde(serialize_with = "serialize_bytes", deserialize_with = "deserialize_bytes")]
     pub  bytes::Bytes,
@@ -20,6 +20,12 @@ fn bytes_to_hex(b: &Bytes) -> String {
     hex::encode(b.0.as_ref())
 }
 
+impl Debug for Bytes {
+    fn fmt(&self, f: &mut Formatter<'_>) -> FmtResult {
+        write!(f, "Bytes(0x{})", bytes_to_hex(self))
+    }
+}
+
 impl Display for Bytes {
     fn fmt(&self, f: &mut Formatter<'_>) -> FmtResult {
         write!(f, "0x{}", bytes_to_hex(self))
@@ -209,4 +215,11 @@ mod tests {
         let b = b.unwrap();
         assert_eq!(b.as_ref(), hex::decode("1213").unwrap());
     }
+
+    #[test]
+    fn test_debug_formatting() {
+        let b = Bytes::from(vec![1, 35, 69, 103, 137, 171, 205, 239]);
+        assert_eq!(format!("{:?}", b), "Bytes(0x0123456789abcdef)");
+        assert_eq!(format!("{:#?}", b), "Bytes(0x0123456789abcdef)");
+    }
 }