Add snake case test back

Author: aumetra

packages/schema-derive/src/query_responses.rs

@@ -347,6 +347,12 @@ mod tests {
         );
     }
 
+    #[test]
+    fn to_snake_case_works() {
+        assert_eq!(to_snake_case("SnakeCase"), "snake_case");
+        assert_eq!(to_snake_case("Wasm123AndCo"), "wasm123_and_co");
+    }
+
     #[test]
     fn nested_works() {
         let input: ItemEnum = parse_quote! {