def test_newcode_with_filename(): 

       source = "i = 3"

       co = compile(source, '', 'exec') 

       code = py.code.Code(co) 

       class MyStr(str): 

           pass 

       filename = MyStr("hello") 

       filename.__source__ = py.code.Source(source) 

->     newco = code.new(rec=True, co_filename=filename) 

       assert newco.co_filename is filename 

       s = py.code.Source(newco) 

       assert str(s) == source