public async Task Add_user_Notification_success()
        {
            //Arrange
            var model = new NotificationEventModel
            {
                Data = new NotificationData
                {
                    AppointmentDateTime = "23/01/2020",
                    FirstName           = "Romio",
                    OrganisationName    = "Little Runners",
                    Reason = "Healthy"
                },

                Type   = "AppointmentCancelled",
                UserId = Guid.NewGuid()
            };

            //Act
            var catalogContext   = new NotificationsDbContext(_dbOptions);
            var accessServ       = new NotificationsAccess(catalogContext);
            var NotificationServ = new NotificationsService(accessServ);
            var testController   = new NotificationsController(NotificationServ);
            var actionResult     = await testController.AddUserNotification(model).ConfigureAwait(false);

            //Assert
            Assert.IsType <OkObjectResult>(actionResult);
            var result = Assert.IsAssignableFrom <NotificationModel>(((OkObjectResult)actionResult).Value);

            Assert.Contains("Healthy", result.Message);
        }