public void Handle_GivenInvalidId_ThrowsException()
        {
            var command = new UpdateTodoListCommand
            {
                Id    = 99,
                Title = "Bucket List",
            };

            var handler = new UpdateTodoListCommandHandler(Context);

            Should.ThrowAsync <NotFoundException>(() =>
                                                  handler.Handle(command, CancellationToken.None));
        }
        public async Task Handle_GivenValidId_ShouldUpdatePersistedTodoList()
        {
            var command = new UpdateTodoListCommand
            {
                Id    = 1,
                Title = "Shopping",
            };

            var handler = new UpdateTodoListCommandHandler(Context);

            await handler.Handle(command, CancellationToken.None);

            var entity = Context.TodoLists.Find(command.Id);

            entity.ShouldNotBeNull();
            entity.Title.ShouldBe(command.Title);
        }