public void DeleteItemTest() { var repo = new StudentsRepository(_context); var item = new Student { FirstName = "Kurt", MiddleName = "Unknown", LastName = "Wallander", Address = "Ystad", Birthday = new DateTime(1961, 05, 23), Email = "*****@*****.**", LogbookNumber = 4366, Group = _context.Groups.FirstOrDefault() }; int Id = _context.Students.FirstOrDefault(x => x.LogbookNumber == item.LogbookNumber).Id; Assert.AreEqual(item.LogbookNumber, repo.GetItem(Id).LogbookNumber); repo.DeleteItem(Id); var deleted = repo.GetItem(Id).LogbookNumber; }