code: def test_trunc_(self):
      self.run_test(
          "def trunc_(a):\n from math import trunc\n return trunc(a)",
          1,
          trunc_=[int],
      )
  
imports: from pythran.tests import TestEnv
label_desc: Use image node_id 33 for calling the TestMath obj's underlying member method code with example usage: obj.test_trunc_() without return types