public void ReverseSort()
        {
            //Arrange
            List <Node> list = new List <Node>
            {
                new Node(5),
                new Node(1)
            };
            SelectionSort b = new SelectionSort(list);
            //Act
            List <Node> result = b.ReverseSort().ToList();

            //Assert
            Assert.AreEqual(1, result.ElementAt(0).Number);
            Assert.AreEqual(5, result.ElementAt(1).Number);
        }