public void CallUnitOfWorkCommit_OnlyOnce()
        {
            //Arrange
            var mockedUserRepository          = new Mock <IEFGenericRepository <ApplicationUser> >();
            var mockedToDoListModelRepository = new Mock <IEFGenericRepository <ToDoListModel> >();
            var mockedUnitOfWork = new Mock <IUnitOfWork>();
            var mockedToDoList   = new Mock <ToDoListModel>();

            var toDoListModelService = new ToDoList.Services.ToDoListModelService(mockedToDoListModelRepository.Object, mockedUserRepository.Object, mockedUnitOfWork.Object);

            //Act
            toDoListModelService.DeleteToDoList(mockedToDoList.Object);

            //Assert
            mockedUnitOfWork.Verify(r => r.Commit(), Times.Once);
        }
        public void Throw_WhenToDoListIsNull()
        {
            //Arrange
            var mockedUserRepository          = new Mock <IEFGenericRepository <ApplicationUser> >();
            var mockedToDoListModelRepository = new Mock <IEFGenericRepository <ToDoListModel> >();
            var mockedUnitOfWork = new Mock <IUnitOfWork>();

            var toDoListModelService = new ToDoList.Services.ToDoListModelService(mockedToDoListModelRepository.Object, mockedUserRepository.Object, mockedUnitOfWork.Object);

            //Act & Assert

            Assert.Throws <ArgumentNullException>(() =>
            {
                toDoListModelService.DeleteToDoList(null);
            });
        }