public void CheckFilterByStudentAnd5rows()
        {
            List <TestResult> expectedList = new List <TestResult>();
            List <TestResult> testingList  = new List <TestResult>();

            expectedList.Add(new TestResult("Dva Dva Dva", "Test na end", DateTime.Parse("06.08.2019 0:00:00"), 77));
            expectedList.Add(new TestResult("qqqqqq", "Test na luck", DateTime.Parse("06.11.2019 19:12:39"), 0));
            expectedList.Add(new TestResult("Quack", "Test na agi", DateTime.Parse("31.12.9999 23:59:59"), 111));
            expectedList.Add(new TestResult("RazRaz", "Test na per", DateTime.Parse("22.10.2019 0:00:00"), 66));
            expectedList.Add(new TestResult("Tri", "Test na cha", DateTime.Parse("06.11.2014 0:00:00"), 88));
            testing.GetResultsFromFile(file);
            testing.SetKindOfSort((int)ResultChecker.KindOfSort.ByNameOfStudent);
            testing.SetCountOfVisibleRows(5);
            foreach (var item in testing.GetEnumeratorByDirectionOfSort().Where(x => x.ToString().Contains(testing.Contains)).Take(testing.CountOfVisibleRows))
            {
                testingList.Add(item);
            }
            CollectionAssert.AreEqual(expectedList, testingList);
        }