public void UpdatePositionWorks()
        {
            var positionList = new PositionListDataHolder(new PositionRepositoryStub());

            positionList.LoadPositionList();
            var position = new DTO.Position(1, "3", "3");

            positionList.UpdatePosition(position);
            Assert.AreEqual("3", positionList.Positions[0].Name);
            Assert.AreEqual("3", positionList.Positions[0].Category);
        }