def test_x_fromend0():
list = LinkedList()
list.append_item('rock')
list.append_item('paper')
list.append_item('scissors')
list.append_item('machinegun')
actual = list.x_fromend(0)
expected = 'machinegun'
assert actual == expected
def test_x_fromend_neg():
list = LinkedList()
list.append_item('machinegun')
actual = list.x_fromend(-2)
expected = 'Exception'
assert actual == expected
def test_x_fromend_one_item():
list = LinkedList()
list.append_item('machinegun')
actual = list.x_fromend(0)
expected = 'machinegun'
assert actual == expected