Take clippy advice in tests.

kvraft/src/async_client.rs

@@ -261,7 +261,7 @@ mod tests {
             let mut hasher = DefaultHasher::new();
             hasher.write(key.as_bytes());
             let hash_code = hasher.finish();
-            return (hash_code % (self.peer_size as u64)) as usize == self.id;
+            (hash_code % (self.peer_size as u64)) as usize == self.id
         }
     }
 

test_configs/src/persister.rs

@@ -21,6 +21,12 @@ impl Persister {
     }
 }
 
+impl Default for Persister {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
 impl ruaft::Persister for Persister {
     fn read_state(&self) -> bytes::Bytes {
         self.state.lock().bytes.clone()