public void Create_MonthIncome_Test() { using (EntityframeworkContext context = new EntityframeworkContext()) { Member member = context.Context.Set <Member>().First(); var model = new MonthIncome(); model.AddItems(new List <IncomeItem>() { new IncomeItem(200, member, model), new IncomeItem(300, member, IncomeType.Other, model) }); context.RegisterNew <MonthIncome, Guid>(model); context.Commit(); Assert.AreNotEqual(Guid.Empty, model.Id); } }