public void TestFindAllSectionsWithoutRoom()
        {
            sectionRepository.Add(section);
            int initValue = sectionRepository.FindAllSectionsWithoutRoom().Count;

            sectionRepository.Add(newSection);
            Assert.AreEqual((initValue + 1), sectionRepository.FindAllSectionsWithoutRoom().Count);
            sectionRepository.Delete(section);
            sectionRepository.Delete(newSection);
        }