def test_should_get_tail_to_list(self): self.assertEqual(tail([1, 2, 3, 4]), [2, 3, 4])
def test_should_get_tail_to_iterable(self): result = tail(iter([1, 2, 3, 4])) self.assertEqual(result, [2, 3, 4])
def test_should_reaturn_blank_sequece(self): self.assertEqual(tail([]), [])