def METHOD_NAME(self, req):
    config = setup_defaults()
    self.setup_mock(req, "swe")
    config.set("output", os.path.join(os.path.dirname(os.path.realpath(__file__)), "postprocess/textfile-service"))
    service = Service(config, "http://exmaple.com")
    service.output["title"] = "textfile"
    stream = VideoRetriever(config, "http://example.com", 0, output=service.output)
    self.assertEqual(_sublanguage(stream, config, None), ["swe"])