def METHOD_NAME(self):
    request = DummyRequest('/index.html', [], '', '')
    callback = lambda *arg: None
    callback.delay = 1
    producer = self._makeOne(request, callback)
    response = {'body': 'abc', 'headers':{'Content-Type':'text/html'}}
    result = producer.sendresponse(response)
    self.assertEqual(result, None)
    self.assertEqual(request.headers['Content-Type'], 'text/html')
    self.assertEqual(request.headers['Content-Length'], 3)
    self.assertEqual(request.producers[0], 'abc')