tests(client): fix flaking conn_reset test

src/client/tests.rs

@@ -1,8 +1,10 @@
 extern crate pretty_env_logger;
 
+use std::time::Duration;
+
 use futures::Async;
 use futures::future::poll_fn;
-use tokio::reactor::Core;
+use tokio::reactor::{Core, Timeout};
 
 use mock::MockConnector;
 use super::*;
@@ -68,6 +70,11 @@ fn conn_reset_after_write() {
             Ok(Async::Ready(()))
         });
         core.run(res1.join(srv1)).expect("res1");
+
+        // run a tiny timeout just to spin the core, so that the pool
+        // can tell the socket is ready again
+        let timeout = Timeout::new(Duration::from_millis(50), &core.handle()).unwrap();
+        core.run(timeout).unwrap();
     }
 
     let res2 = client.get("http://mock.local/a".parse().unwrap());