Testing http api which uses long polling

I see that ExVCR is useful for testing HTTP api.
a sample is shown here.

My application polls telegram server by getUpdates method and if somebody had sent message to my bot, I get a response from server depending upon what type of message it was.

Is there a way to mock these with ExVCR?

My call to server is getUpdates or sendUpdates which is then handled by telegram server accordingly to the client.

In such cases instead of testing against “live” system and then recording the responses I prefer Bypass which is temporary Plug server that can handle incoming requests where you can do whatever you can do with the Plug.

Only trouble however is keeping the stub/mock up to date with external service.