public async Task Delete_ShouldCallNotificationsRepositoryRemove()
        {
            var called               = false;
            var userChannel          = "http://www.mycompany.com/testChannel";
            var userNotificationType = NotificationType.WindowsPhoneNotification;

            var notificationChannelRepository = new Data.Repositories.Fakes.StubINotificationChannelRepository();

            notificationChannelRepository.RemoveUserChannelAsyncStringStringNotificationType = (userIdentity, channel, notificationType) =>
            {
                Assert.AreEqual(userChannel, channel);
                Assert.AreEqual(userNotificationType, notificationType);
                called = true;

                return(Task.FromResult(string.Empty));
            };

            var notificationsController = new NotificationsController(notificationChannelRepository, new SecurityHelper());
            await notificationsController.Delete(new Models.ClientNotificationChannel {
                ChannelUri = userChannel, NotificationType = userNotificationType
            });

            Assert.IsTrue(called);
        }