return TestCase.setUp(self, *args, **kwargs)

def get_app(self):
    return None

def tearDown(self):
    if self._listener:
        self._listener.stopListening()

@defer.inlineCallbacks
def fetch(self, url, *args, **kwargs):
    response = yield httpclient.fetch('http://localhost:%s%s' % (self.
        get_http_port(), url), *args, **kwargs)
defer.returnValue(response)
How do I write tests for Cyclone in the style of Tornado?