public ActionResult PassingTest(PassingTestViewModel model)
        {
            bool isSuccess   = false;
            var  test        = testService.GetById(model.Id);
            int  userId      = userService.GetOneByPredicate(u => u.UserName == User.Identity.Name).Id;
            var  testResults = testService.CheckAnswers(model.Id, model.Results);
            var  runtime     = (DateTime.UtcNow - model.StartTest);

            if (testResultService.CheckPercentAnswers(testResults, test.MinToSuccess) && testResultService.CheckTime(test.TimeLimit, runtime))
            {
                isSuccess = true;
            }
            var bllTestResult = new BllTestResult
            {
                TestId       = model.Id,
                UserId       = userId,
                Runtime      = runtime,
                DateComplete = DateTime.Now,
                IsSuccess    = isSuccess,
                Results      = testResults.ToList()
            };

            testResultService.Create(bllTestResult);

            var mvcTestResult = bllTestResult.ToMvcStatistics();

            mvcTestResult.TimeLimit             = test.TimeLimit;
            mvcTestResult.MinToSuccess          = test.MinToSuccess;
            mvcTestResult.PercentCorrectAnswers = testResultService.GetPercentGoodAnswers(testResults);
            if (Request.IsAjaxRequest())
            {
                return(PartialView("_Statistics", mvcTestResult));
            }
            return(View("_Statistics", mvcTestResult));
        }