public void ReverseList_True()
{
var head = new ListNode(1);
var node2 = new ListNode(2);
var node3 = new ListNode(3);
var node4 = new ListNode(4);
var node5 = new ListNode(5);
head.next = node2;
node2.next = node3;
node3.next = node4;
node4.next = node5;
var expectedOutput = "5,4,3,2,1";
var output = _linkedListService.ReverseListV1(head);
var actualOutput = _linkedListService.GetListValues(output);
Assert.Equal(expectedOutput, actualOutput);
}