public void MergeTwoLists_EmptyTree_ShouldReturnMerged()
{
var firstLinkedList = ListNode.CreateList(new int[] { 1, 2, 4 });
var secondLinkedList = ListNode.CreateList(null);
var expectedLinkedList = ListNode.CreateList(new int[] { 1, 2, 4 });
var result = MergeTwoListsImplementation.MergeTwoLists(firstLinkedList, secondLinkedList);
Assert.True(result.Equals(expectedLinkedList) && expectedLinkedList.Equals(result));
}
public void MergeTwoLists_DifferentLength_ShouldReturnMerged()
{
var firstLinkedList = ListNode.CreateList(new int[] { 2, 8, 11, 15 });
var secondLinkedList = ListNode.CreateList(new int[] { 1, 3, 4, 12, 14, 17 });
var expectedLinkedList = ListNode.CreateList(new int[] { 1, 2, 3, 4, 8, 11, 12, 14, 15, 17 });
var result = MergeTwoListsImplementation.MergeTwoLists(firstLinkedList, secondLinkedList);
Assert.True(result.Equals(expectedLinkedList) && expectedLinkedList.Equals(result));
}