message: Update helper.rs code more readable
diff: -use gluesql::{execute, Payload, SledStorage, Store};
  +use gluesql::{execute, Payload, Row, SledStorage, Store};
  use nom_sql::parse_query;
  use sled::IVec;
  use std::fmt::Debug;
  @@ -42,7 +42,9 @@ pub trait Helper<T: 'static + Debug> {
  match result.unwrap() {
  Payload::Select(rows) => {
  - assert_eq!(count, rows.into_iter().nth(0).unwrap().0.len())
  + let Row(items) = rows.into_iter().nth(0).unwrap();
  +
  + assert_eq!(count, items.len())
  }
  _ => assert!(false),
  };
  