use chrono::Utc; use super::Database;use crate::{db::NewUserParams, test_both_dbs};use std::sync::Arc; test_both_dbs!(    test_contributors,    test_contributors_postgres,    test_contributors_sqlite); async fn test_contributors(db: &Arc<Database>) {    db.create_user(        "user1@example.com",        false,        NewUserParams {            github_login: "user1".to_string(),            github_user_id: 1,        },    )    .await    .unwrap();     assert_eq!(db.get_contributors().await.unwrap(), Vec::<String>::new());     let user1_created_at = Utc::now();    db.add_contributor("user1", 1, None, user1_created_at, None)        .await        .unwrap();    assert_eq!(        db.get_contributors().await.unwrap(),        vec!["user1".to_string()]    );     let user2_created_at = Utc::now();    db.add_contributor("user2", 2, None, user2_created_at, None)        .await        .unwrap();    assert_eq!(        db.get_contributors().await.unwrap(),        vec!["user1".to_string(), "user2".to_string()]    );}