public void DeleteOneMiddleElement_ElementIsDeletedCorrectly_FromTail()
{
List <string> expected = new List <string> {
"5", "4", "2", "1"
};
DoublyLinkedList <string> testList = new DoublyLinkedList <string>();
testList.AddToTail("1");
testList.AddToTail("2");
testList.AddToTail("3");
testList.AddToTail("4");
testList.AddToTail("5");
testList.DeleteAtIndex(3);
List <string> actual = CheckPreviousLinks(testList);
CollectionAssert.AreEqual(expected, actual);
}
public void DeleteOneMiddleAndOneLastElements_ElementsAreDeletedCorrectly_FromHead()
{
List <string> expected = new List <string> {
"1", "2", "4"
};
DoublyLinkedList <string> testList = new DoublyLinkedList <string>();
testList.AddToTail("1");
testList.AddToTail("2");
testList.AddToTail("3");
testList.AddToTail("4");
testList.AddToTail("5");
testList.DeleteAtIndex(3);
testList.DeleteAtIndex(4);
List <string> actual = CheckNextLinks(testList);
CollectionAssert.AreEqual(expected, actual);
}