This application presents mongotor bug

app.py

import tornado.web
from tornado import gen
from mongotor.database import Database
from bson import ObjectId

class Handler(tornado.web.RequestHandler):

    def initialize(self):
        self.db = Database.connect('localhost:27017', 'regisys')

    @tornado.web.asynchronous
    @gen.engine
    def get(self):
        user = {'_id': ObjectId(), 'name': 'User Name'}
        yield gen.Task(self.db.user.insert, user)

        yield gen.Task(self.db.user.update, user['_id'],
            {"$set": {'name': 'New User Name'}})

        user_found = yield gen.Task(self.db.user.find_one, user['_id'])
        assert user_found['name'] == 'New User Name'

        yield gen.Task(self.db.user.remove, user['_id'])

import tornado.ioloop

application = tornado.web.Application([
    (r"/", Handler),
])

if __name__ == "__main__":
    application.listen(8000)
    tornado.ioloop.IOLoop.instance().start()