Function drive_with_slow_payloads 

pub async fn drive_with_slow_payloads<S, C, E>(
    app: WireframeApp<S, C, E>,
    payloads: Vec<Vec<u8>>,
    config: SlowIoConfig,
) -> Result<Vec<u8>, Error>
where
    S: TestSerializer,
    C: Send + 'static,
    E: Packet,

Encode payloads with the default length-delimited codec and drive app.

Errors

Returns any I/O or configuration error encountered while driving the in-memory transport.