public void ArticleDetailsModel_ShouldShowGradeAverageWithTwoDecimals()
        {
            var article = new Article();
            article.Author = new User {UserName = "******"};
            article.Body = "";

            var model = new ArticleDetailsModel(article, "asmunde");

            Assert.That(model.GradeAverage, Is.EqualTo("3.00"));
        }
        public void ArticleDetailsModel_ShouldShowGradeGivenByCurrentUser()
        {
            var article = new Article();
            article.Author = new User {UserName = "******"};
            article.Grades.Add(new Grade {User = article.Author, GradeValue = 4});
            article.Body = "";

            var model = new ArticleDetailsModel(article, "asmunde");

            Assert.That(model.GradeValue, Is.EqualTo(4));
        }