import asyncio

    from sanic import Sanic
    from sanic.response import json
    from webtest_sanic import TestApp

    app = Sanic()

    @app.route('/')
    async def test(request):
        return json({'hello': 'world'})

    loop = asyncio.new_event_loop()

    def test_hello():
        client = TestApp(app, loop=loop)
        res = client.get('/')
        assert res.status_code == 200
        assert res.json == {'message': 'Hello world'}