from nose.tools import assert_equal


class TestAddReverse(object):
    
    def test_add(self):
        print('Test: Empty list(s)')
        assert_equal(MyLinkedList().add(None, None), None)
        assert_equal(MyLinkedList().add(Node(5), None), None)
        assert_equal(MyLinkedList().add(None, Node(10)), None)

        print('Test: Add values of different lengths')
        # Input 1: 6->5->None
        # Input 2: 9->8->7
        # Result: 5->4->8
        first_list = MyLinkedList(Node(6))
        first_list.append(5)
        second_list = MyLinkedList(Node(9))
        second_list.append(8)
        second_list.append(7)
        result = MyLinkedList().add(first_list, second_list)
        assert_equal(result.get_all_data(), [5, 4, 8])

        print('Test: Add values of same lengths')
        # Input 1: 6->5->4
        # Input 2: 9->8->7
        # Result: 5->4->2->1
        first_head = Node(6)
        first_list = MyLinkedList(first_head)
        first_list.append(5)
        first_list.append(4)
        second_head = Node(9)
        second_list = MyLinkedList(second_head)
        second_list.append(8)
        second_list.append(7)
        result = MyLinkedList().add(first_list, second_list)
        assert_equal(result.get_all_data(), [5, 4, 2, 1])
        
        print('Success: test_add')

def main():
    test = TestAddReverse()
    test.test_add()

if __name__ == '__main__':
    main()