public void DeleteArticleTest()
        {
            ArticleContext articles      = new ArticleContext();
            int            countArticles = articles.GetCountArticles(null);

            articles.DeleteArticle(33);
            int countafteDelete = articles.GetCountArticles(null);

            Assert.AreNotEqual(countArticles, countafteDelete);
            Assert.IsNull(articles.GetArticle(33));
        }