public async Task BoardService_FindWithTasksAsync_InputInvalid_Should_ReturnNull()
        {
            var mockUnitOfWork      = new Mock <IUnitOfWork>();
            var mockBoardRepository = new MockBoardRepository().MockFindByIdWithTasksAsyncInvalid();

            var boardService = new BoardService(mockBoardRepository.Object, mockUnitOfWork.Object);

            var results = await boardService.FindWithTasksAsync(1);

            Assert.IsNull(results);
            mockBoardRepository.VerifyFindByIdWithTasksAsync(Times.Once());
        }