public IEnumerable <TestViewModel> DisplayAllDetails()
        {
            IEnumerable <Test> test = testRepository.DisplayAllDetails();
            var     config          = new MapperConfiguration(cfg => { cfg.CreateMap <Test, TestViewModel>(); cfg.IgnoreUnmapped(); });
            IMapper mapper          = config.CreateMapper();
            IEnumerable <TestViewModel> allTests = mapper.Map <IEnumerable <Test>, IEnumerable <TestViewModel> >(test);

            return(allTests);
        }