public void GetSortedArticlesTest_ReturnsListOfArticles()
{
var articles = ArticleHelper.GetRandomTestArticles(10);
var expectedArticles = articles.Take(3).ToList();
string title = expectedArticles.ElementAt(0).Title;
string userName = expectedArticles.ElementAt(1).UserName;
string category = expectedArticles.ElementAt(2).Category.ToString();
_mockArticleService.Setup(ser => ser.GetArticlesByOccurrenceAsync(title, userName, category)
).ReturnsAsync(expectedArticles);
var okObjectResult = (_controller.GetSortedArticles(title, userName, category).Result.Result as OkObjectResult)?.Value;
var result = okObjectResult as IEnumerable <Article> ?? throw new InvalidOperationException();
Assert.Contains(result, article => articles.Any(a => a.Category == article.Category &&
a.UserName == article.UserName &&
a.Content == article.Content &&
a.CreatedDate == article.CreatedDate &&
a.Id == article.Id &&
a.Title == article.Title));
}