public async Task CheckGettingNewQuestionForStylistAsync()
        {
            ApplicationDbContext db = GetDb();

            var repository = new EfDeletableEntityRepository <Question>(db);
            var service    = new QuestionsService(repository);

            await this.PrepareQuestionAsync(service);

            await this.PrepareQuestionAsync(service);

            var questions = await service.GetAllNewQuestionsForStylistAsync <TestQuestionModel>(this.stylist.Id);

            var questionCount = await service.GetNewQuestionsCountAsync(this.stylist.Id);

            Assert.Equal(2, questions.Count());
            Assert.Equal(2, questionCount);
        }