public void TestMethod1()
        {

            //Make the virtual context that has User database set and Course database set
            var context = new TestNLDS_V_Context();

            //make test user with empry courses list
            ICollection<Book> book_collection = new Collection<Book>();
            User test = new User { ID = 1, username = "test", password = "test2", email = "test@test.com", phone = 1231231234, selfDescription = "why", courses = course_collection };

            //add user and course to virtual database set
            context.Users.Add(test);

            context.Books.Add(new Book { jasiu, etc, etc });

            //Gain the controller
            var controller = new UsersController(context, test);
            controller.set_currentUser(test); //current user = test

            string[] test_array = { "2" };

            //add book to the user
            var result = controller.AddBooks(test_array);

            Assert.IsNotNull(result);

            //check it is not null
            Assert.IsNotNull(test.books);

        }