public void GetArticleById_Success() { DatabaseDriver databaseDriver = new DatabaseDriver(); Logger logger = new Logger(); ShopService shopService = new ShopService(databaseDriver, logger, new List <ISupplier>()); Article article = new Article() { ID = 10, NameOfArticle = "Silly hats", ArticlePrice = 100 }; databaseDriver.SaveArticle(article); Assert.AreEqual(10, shopService.GetArticleById(10).ID); }