code: def test_erfc_(self):
      self.run_test(
          "def erfc_(a):\n from math import erfc\n return erfc(a)",
          1,
          erfc_=[int],
      )
  
imports: from pythran.tests import TestEnv
label_desc: Use image node_id 30 for calling the TestMath obj's underlying member method code with example usage: obj.test_erfc_() without return types