def test_nthNodeValueFromEnd():
ll = LinkedList()
ll.append("1")
ll.append("3")
ll.append("8")
ll.append("2")
assert ll.nthNodeValueFromEnd(0) == "2"
assert ll.nthNodeValueFromEnd(1) == "8"
assert ll.nthNodeValueFromEnd(2) == "3"
assert ll.nthNodeValueFromEnd(3) == "1"
assert ll.nthNodeValueFromEnd(4) == "Index is out of range"
assert ll.nthNodeValueFromEnd(5) == "Index is out of range"
assert ll.nthNodeValueFromEnd(
-1) == "Negative index is not allowed to search"
assert ll.nthNodeValueFromEnd(
-99) == "Negative index is not allowed to search"
def test_nthNodeValueFromEnd1():
ll = LinkedList()
assert ll.nthNodeValueFromEnd(0) == "Index is out of range"
assert ll.nthNodeValueFromEnd(1) == "Index is out of range"
ll.append("1")
assert ll.nthNodeValueFromEnd(0) == "1"