test.rs

fn some_test -> Result<(), Error> {
    let mut rt = tokio::runtime::Runtime::new().unwrap();
    
    rt.spawn(microservice_1.map_err(|e| panic!(e)));
    rt.spawn(microservice_2.map_err(|e| panic!(e)));
    rt.spawn(microservice_3.map_err(|e| panic!(e)));
    rt.spawn(microservice_4.map_err(|e| panic!(e)));

    // do testing and do not touch rt anymore
}