src/core/interface/database/mod.rs

@@ -123,5 +123,9 @@ mod tests {
         let io_err: SaveError = io::Error::new(io::ErrorKind::Interrupted, "error").into();
         assert!(!io_err.to_string().is_empty());
         assert!(!format!("{:?}", io_err).is_empty());
+
+        let sd_err: SaveError = SaveError::SerDeError(String::from("serde"));
+        assert!(!sd_err.to_string().is_empty());
+        assert!(!format!("{:?}", sd_err).is_empty());
     }
 }