public void DeleteWaitlistErrorTest()
        {
            //// Arrange
            var errors = new List<string>();
            var mockRepository = new Mock<IWaitlistRepository>();
            var waitlistservice = new WaitlistService(mockRepository.Object);
            var waitlist = new Waitlist { StudentId = string.Empty, ScheduleId = string.Empty };

            //// Act
            waitlistservice.DeleteWaitlist(waitlist, ref errors);

            //// Assert
            Assert.AreEqual(1, errors.Count);
        }
        public string DeleteTA(Waitlist waitlist)
        {
            var errors = new List<string>();
            var repository = new WaitlistRepository();
            var service = new WaitlistService(repository);

            service.DeleteWaitlist(waitlist, ref errors);

            if (errors.Count == 0)
            {
                return "ok";
            }

            return "error";
        }