Make flakey unit test less flakey

For some reason, the UDP socket is not unbound right away when stopping
the handler, so the test would sometimes fail with "Address in use"

1 files changed, 3 insertions, 1 deletions

diff --git a/talpid-core/src/resolver.rs b/talpid-core/src/resolver.rs
index 2a69998b2e..cbf83d65c7 100644
--- a/talpid-core/src/resolver.rs
+++ b/talpid-core/src/resolver.rs
@@ -691,7 +691,7 @@ mod test {
         config::{NameServerConfigGroup, ResolverConfig, ResolverOpts},
         TokioAsyncResolver,
     };
-    use std::{net::UdpSocket, sync::Mutex};
+    use std::{net::UdpSocket, sync::Mutex, thread};
     use typed_builder::TypedBuilder;
 
     /// Can't have multiple local resolvers running at the same time, as they will try to bind to
@@ -747,6 +747,7 @@ mod test {
                 .expect("lookup should succeed");
             drop(_sock);
             handle.stop().await;
+            thread::sleep(Duration::from_millis(300));
 
             // bind() succeeds if wildcard address is bound with REUSEADDR and REUSEPORT
             let _sock = bind_sock(
@@ -826,6 +827,7 @@ mod test {
         let addr = handle.listening_addr();
         assert_eq!(addr, SocketAddr::from((Ipv4Addr::LOCALHOST, DNS_PORT)));
         rt.block_on(handle.stop());
+        thread::sleep(Duration::from_millis(300));
         UdpSocket::bind(addr).expect("Failed to bind to a port that should have been removed");
     }