public void TestAddGet1()
        {
            //Arrange=preparacion
            FriendsController friend = new FriendsController();
            int numa   = 3;
            int numb   = 4;
            int numres = 7;

            //Act=ejecucion
            int result = friend.Add(numa, numb);

            //Assert=verificacion
            Assert.AreEqual(numres, result);
        }