public void MazeCellCreator_CreatedCellIsNotEmpty()
        {
            ICell mazeCellCreator = MazeCellCreator.CreateCell();

            Assert.IsFalse(mazeCellCreator.IsEmpty == (mazeCellCreator.Value == 'x'));
        }
        public void MazeCellCreator_CreatedCellIsEmpty()
        {
            ICell mazeCellCreator = MazeCellCreator.CreateCell();

            Assert.IsTrue(mazeCellCreator.IsEmpty == (mazeCellCreator.Value == '-'));
        }