public void GetUnreadNotificationsFor_UnReadNotificationsIsNotForTheGivenUser_ShouldNotBeReturned()
        {
            var notification = Notification.GigCancelled(new Gig());
            var user         = new ApplicationUser {
                Id = "1"
            };
            var userNotification = new UserNotification(user, notification);

            _mockUserNotifications.SetSource(new UserNotification[] { userNotification });

            var result = _repository.GetUnreadNotificationsFor(user.Id + "_");

            result.Should().BeEmpty();
        }