From 3bf9025d2f4ca1ec5a673cd42153f05a3dc868f6 Mon Sep 17 00:00:00 2001
From: "odysseas.eth" <odyslam@gmail.com>
Date: Fri, 2 Dec 2022 15:12:34 -0500
Subject: [PATCH] feat: impl Serialize for Chain (#1917)

* feat: impl Serialize for Chain

* fix: add deps
---
 ethers-core/src/types/chain.rs | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/ethers-core/src/types/chain.rs b/ethers-core/src/types/chain.rs
index 1e395091..5a1f1036 100644
--- a/ethers-core/src/types/chain.rs
+++ b/ethers-core/src/types/chain.rs
@@ -1,5 +1,5 @@
 use super::U256;
-use serde::Deserialize;
+use serde::{Deserialize, Serialize, Serializer};
 use std::{
     convert::{TryFrom, TryInto},
     fmt,
@@ -260,6 +260,15 @@ impl FromStr for Chain {
     }
 }
 
+impl Serialize for Chain {
+    fn serialize<S>(&self, s: S) -> Result<S::Ok, S::Error>
+    where
+        S: Serializer,
+    {
+        s.serialize_str(self.to_string().as_ref())
+    }
+}
+
 impl Chain {
     /// The blocktime varies from chain to chain.
     ///
@@ -438,5 +447,5 @@ impl Chain {
 
 #[test]
 fn test_default_chain() {
-    assert_eq!(Chain::default(), Chain::Mainnet);
+    assert_eq!(serde_json::to_string(&Chain::Mainnet).unwrap(), "\"mainnet\"");
 }