code: def test_rec0(self):
      self.run_test(
          """
  def test_rec0(n):
    z = 1
    if n > 1:
      z = n * test_rec0(n-1)
    return z""",
          5,
          test_rec0=[int],
      )
  
imports: from pythran.tests import TestEnv
label_desc: Use image node_id 1 for calling the TestBase obj's underlying member method code with example usage: obj.test_rec0() without return types