1 use tokio::net::TcpStream; 2 use tokio::sync::oneshot; 3 use tokio::time::{timeout, Duration}; 4 5 use futures::executor::block_on; 6 7 use std::net::TcpListener; 8 9 #[test] 10 #[should_panic( 11 expected = "there is no reactor running, must be called from the context of a Tokio 1.x runtime" 12 )] timeout_panics_when_no_tokio_context()13fn timeout_panics_when_no_tokio_context() { 14 block_on(timeout_value()); 15 } 16 17 #[test] 18 #[should_panic( 19 expected = "there is no reactor running, must be called from the context of a Tokio 1.x runtime" 20 )] panics_when_no_reactor()21fn panics_when_no_reactor() { 22 let srv = TcpListener::bind("127.0.0.1:0").unwrap(); 23 let addr = srv.local_addr().unwrap(); 24 block_on(TcpStream::connect(&addr)).unwrap(); 25 } 26 timeout_value()27async fn timeout_value() { 28 let (_tx, rx) = oneshot::channel::<()>(); 29 let dur = Duration::from_millis(10); 30 let _ = timeout(dur, rx).await; 31 } 32 33 #[test] 34 #[should_panic( 35 expected = "there is no reactor running, must be called from the context of a Tokio 1.x runtime" 36 )] io_panics_when_no_tokio_context()37fn io_panics_when_no_tokio_context() { 38 let _ = tokio::net::TcpListener::from_std(std::net::TcpListener::bind("127.0.0.1:0").unwrap()); 39 } 40