public void UpdateCustomerTest()
        {
            var customer = new Customers.API.Models.Customer
            {
                Id          = new Guid("ab2bd817-98cd-4cf3-a80a-53ea0cd9c200"),
                FirstName   = "James",
                LastName    = "Smith",
                DateOfBirth = new DateTimeOffset(1990, 1, 1, 0, 0, 0, new TimeSpan(-2, 0, 0))
            };
            var noContentResult = _controller.UpdateCustomer(customer).Result as NoContentResult;

            Assert.Equal(204, noContentResult?.StatusCode);
        }
        public void AddCustomerTest()
        {
            var customer = new Customers.API.Models.Customer
            {
                Id          = new Guid(),
                FirstName   = "Steve",
                LastName    = "Smith",
                DateOfBirth = new DateTimeOffset(1990, 1, 1, 0, 0, 0, new TimeSpan(-2, 0, 0))
            };
            var createdAtRouteResult = _controller.AddCustomer(customer).Result as CreatedAtRouteResult;

            Assert.Equal(201, createdAtRouteResult?.StatusCode);
        }