public void OddEvenList_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);
var node6 = new ListNode(6);
var node7 = new ListNode(7);
var node8 = new ListNode(8);
head.next = node2;
node2.next = node3;
node3.next = node4;
node4.next = node5;
node5.next = node6;
node6.next = node7;
node7.next = node8;
var expectedOutput = "1,3,5,7,2,4,6,8";
var output = _linkedListService.OddEvenList(head);
var actualOutput = _linkedListService.GetListValues(output);
Assert.Equal(expectedOutput, actualOutput);
}