private bool IsTestReady(TestViewModel test)
 {
     TestEntity t = testService.GetById(test.Id);
     if (t.QuestionCount == 0)
         return false;
     IEnumerable<QuestionEntity> questions = questionService.GetAllTestQuestions(test.ToBllTest());
     foreach(QuestionEntity q in questions)
     {
         if(!IsQuestionReady(q.ToMvcQuestion()))
         {
             return false;
         }
     }
     return true;
 }