public void TestGetInvitation()
        {
            Invitation invitation = GetNewInvitation();

            InvitationService invitationService = new InvitationService(new DatabaseService());

            invitationService.CreateServicedObject(ref invitation);

            Invitation result = invitationService.GetServicedObjectWhere($"user_id = {user.Id} and event_id = {_event.Id}");

            Assert.AreEqual(invitation.UserId, result.UserId);
            Assert.AreEqual(invitation.EventId, result.EventId);

            invitationService.DeleteServicedObject(result);
        }
        public void TestDeleteInvitationWhere()
        {
            Invitation invitation = GetNewInvitation();

            InvitationService invitationService = new InvitationService(new DatabaseService());

            invitationService.CreateServicedObject(ref invitation);

            int invitationsBefore = invitationService.GetAllServicedObjects().Count;

            invitationService.DeleteServicedObject(invitation);

            int invitationsAfter = invitationService.GetAllServicedObjects().Count;

            Assert.AreEqual(1, invitationsBefore - invitationsAfter);
        }