public void ReverseOperations_True()
{
var head = new ListNode(1);
var node2 = new ListNode(2);
var node8 = new ListNode(8);
var node9 = new ListNode(9);
var node12 = new ListNode(12);
var node16 = new ListNode(16);
head.next = node2;
node2.next = node8;
node8.next = node9;
node9.next = node12;
node12.next = node16;
var expectedOutput = "1,8,2,9,16,12";
var output = _linkedListService.ReverseOperations(head);
var actualOutput = _linkedListService.GetListValues(output);
Assert.Equal(expectedOutput, actualOutput);
}