public void UpdateTour_ValidTour_ReturnTrue()
        {
            // Arrange
            var mock = new Mock <IUnitOfWork>();

            mock.Setup(unitOfWork => unitOfWork.TourRepository.Update(It.IsAny <TourEntity>())).Verifiable();
            mock.Setup(unitOfWork => unitOfWork.Commit()).Verifiable();
            var     tourService = new TourService(mock.Object);
            TourDto tour        = new TourDto()
            {
                Name  = "TourId",
                Price = 5
            };
            int tourId = 1;

            // Act
            var result = tourService.UpdateTourById(tourId, tour);

            // Assert
            mock.Verify(moq => moq.Commit(), Times.Once);
            Assert.True(result);
        }