new_contents: from pywrap.cython import Includes, function_def
  from nose.tools import assert_equal
  
  
  def test_simple_function_def():
      assert_equal(
          function_def("testfun", [], Includes("test_module"), result_type="void"),
          """    def testfun(self):
          self.thisptr.testfun()
  """)
subject: Test cython function generation