Function middleware

tests/test_web_middleware.py:17–22

(request)

        @asyncio.coroutine
        def middleware(request):
            resp = yield from handler(request)
            assert 200 == resp.status
            resp.set_status(201)
            resp.text = resp.text + '[MIDDLEWARE]'
            return resp
        return middleware

    app, client = yield from create_app_and_client()