code: def test_lgamma_(self):
      self.run_test(
          "def lgamma_(a):\n from math import lgamma\n return lgamma(a)",
          1,
          lgamma_=[int],
      )
  
imports: from pythran.tests import TestEnv
label_desc: Use image node_id 32 for calling the TestMath obj's underlying member method code with example usage: obj.test_lgamma_() without return types