public void Index_Get_RetrievesAllContactsFromRepository()
        {
            //Arrange
            Student p1 = GetPerson(1, "Sammy", "Hagar");
            Student p2 = GetPerson(2, "Johnny", "Walker");
            InMemoryStudentRepository repository = new InMemoryStudentRepository();
            repository.InsertStudent(p1);
            repository.InsertStudent(p2);
            var controller = GetHomeController(repository);

            //Act
            var result = controller.Index();

            //Assert
            var model = (IEnumerable<Student>)result.ViewData.Model;
            CollectionAssert.Contains(model.ToList(), p1);
            CollectionAssert.Contains(model.ToList(), p2);
        }