public void GetArticlesWithKeywordsUsingExpressionTreeWithUnionShouldWork()
        {
            var result = new NewsArticleRepository().GetArticlesWithKeywordsUsingExpressionTreeWithUnion(this._articles, this._keywords).ToArray();

            AssertResult(result);
        }
        public void GetArticlesWithKeywordsUsingLinqShouldWork()
        {
            var result = new NewsArticleRepository().GetArticlesWithKeywordsUsingLinq(this._articles, this._keywords).ToArray();

            AssertResult(result);
        }