code: def test_fabs_(self):
      self.run_test(
          "def fabs_(a):\n from math import fabs\n return fabs(a)",
          1,
          fabs_=[int],
      )
  
imports: from pythran.tests import TestEnv
label_desc: Use image node_id 26 for calling the TestMath obj's underlying member method code with example usage: obj.test_fabs_() without return types