public async Task GetCustomerVehicleById_Should_ReturnNull_WhenDoesNotExist()
        {
            // Arrange
            var sut = new CustomerVehicleService(repo, new MockVehicleDataService());
            // Act
            var result = await sut.GetCustomerVehicle(Guid.NewGuid(), Guid.NewGuid());

            // Assert
            Assert.Null(result);
        }
        public async Task GetCustomerVehicleById_Should_ReturnSinlgeVehicle()
        {
            // Arrange
            var v1 = new CustomerVehicle {
                Registration = "EF02VCC"
            };
            await repo.Create(v1, Guid.NewGuid(), Guid.NewGuid());

            var sut = new CustomerVehicleService(repo, new MockVehicleDataService());
            // Act
            var result = await sut.GetCustomerVehicle(v1.Id, v1.ClientId);

            // Assert
            Assert.IsType <CustomerVehicle>(result);
        }