code: def test_next_imap_none(self):
      self.run_test(
          "def next_imap_none(n): x = map(str,n) ; next(x) ; return list(map(str, x))",
          list(range(-5, 5)),
          next_imap_none=[List[int]],
      )
  
imports: from pythran.tests import TestEnv
  import unittest
  import numpy
  from pythran.typing import List, NDArray
label_desc: Use image node_id 25 for calling the TestItertools obj's underlying member method code with example usage: obj.test_next_imap_none() without return types