Entity Framework 5.0追加削除(カスケード)

[TestClass]

    public class UnitTest1

    {

        [TestMethod]

        public void TestInsert()

        {

            using (TestEntities1 context = new TestEntities1())

            {

                User user = new User();

                user.ID = 10;

                user.UName = "Jim";



                user.Address = new Address();

                user.Address.ID = 7;

                user.Address.Address1 = " ";

               

                context.Set<User>().Add(user);





                DbEntityEntry<Address> entry = context.Entry<Address>(user.Address);

                entry.State = System.Data.EntityState.Modified;

                //entry.State = System.Data.EntityState.Added;



                DbEntityEntry<User> entry2 = context.Entry<User>(user);

                entry2.State = System.Data.EntityState.Added;



                context.SaveChanges();

               

            }

        }



         [TestMethod]

        public void TestUpdate()

        {

            using (TestEntities1 context = new TestEntities1())

            {

                User user = new User();

                user.ID = 10;

                user.UName = "Jim";



                user.Address = new Address();

                user.Address.ID = 7;

                user.Address.Address1 = " ";



                context.Set<User>().Add(user);





                DbEntityEntry<Address> entry = context.Entry<Address>(user.Address);

                entry.State = System.Data.EntityState.Modified;



                DbEntityEntry<User> entry2 = context.Entry<User>(user);

                entry2.State = System.Data.EntityState.Modified;



                context.SaveChanges();



            }

        }



         [TestMethod]

        public void TestSelect()

        {

            using (TestEntities1 context = new TestEntities1())

            {

                var user = context.UserAndSubs().Where(u => u.ID == 10)

                    .Select(u => u).ToList();

            }

        }



         [TestMethod]

        public void TestDelete()

        {

            using (TestEntities1 context = new TestEntities1())

            {

                var user = context.UserAndSubs().Where(u => u.ID == 10).First();



                context.Set<User>().Add(user);

                

                context.Set<Address>().Remove(user.Address);



                context.Entry<User>(user).State = System.Data.EntityState.Deleted;



                context.SaveChanges();

            }

        }

    }