code: def test_sqrt_(self):
      self.run_test(
          "def sqrt_(a):\n from math import sqrt\n return sqrt(a)",
          1,
          sqrt_=[int],
      )
  
imports: from pythran.tests import TestEnv
label_desc: Use image node_id 3 for calling the TestMath obj's underlying member method code with example usage: obj.test_sqrt_() without return types