code: def test_combinations(self):
      self.run_test(
          "def combinations_(l0,a): from itertools import combinations; return sum(map(lambda t : t[0]*t[1], combinations(l0,a)))",
          [0, 1, 2, 3, 4, 5],
          2,
          combinations_=[List[int], int],
      )
  
imports: from pythran.tests import TestEnv
  import unittest
  import numpy
  from pythran.typing import List, NDArray
label_desc: Use image node_id 36 for calling the TestItertools obj's underlying member method code with example usage: obj.test_combinations() without return types