public async void PostMethodInserCustomer()
        {
            // Arrange
            var mockRepository = new Mock <ICustomerService>();

            var controller = new CustomerController(mockRepository.Object);

            // Act
            // IHttpActionResult actionResult = controller.AddCustomerDetails(new CustomerDetails { Password = "", firstName = "Product1", LastName = "", BilingAddress = "", DeliveryAddress = "", DeliveryCity = "", MobileNo = "", Email = "" });

            bool status = await controller.AddCustomerDetails(new CustomerDetails { Password     = "******",
                                                                                    firstName    = "Lashika", LastName = "Dilanthi", BilingAddress = "kurunegala", DeliveryAddress = "Kurunegala",
                                                                                    DeliveryCity = "Kurunegala", MobileNo = "0779886520", Email = "*****@*****.**" });

            // var createdResult = actionResult as CreatedAtRouteNegotiatedContentResult<CustomerDetails>;

            //Assert
            Assert.AreEqual(true, status);
        }