Excelsior's Series 4 - 13

db_handler_test.rs

#[tokio::test]
async fn test_create_user_success() {
    let mut mock_executor = MockDatabaseExecutor::new();
    let new_user = NewUser {                                  //mocking a new user
        name: "Test User".to_string(),
    };

    mock_executor
        .expect_execute_create_user()
        .with(eq("Test User".to_string()))                    //entrance parameter
        .times(1)
        .returning(|_| Ok("OK".to_string()));

    let state = AppState {
        db_pool: Arc::new(DbPool::Mock(mock_executor)),
    };

    let response = create_user(State(state), Json(new_user)).await;
    assert_eq!(response.status(), StatusCode::CREATED);
}