io: update AsyncFd to use Registration (#3113)

1 files changed, 3 insertions, 3 deletions

diff --git a/tokio/tests/io_async_fd.rs b/tokio/tests/io_async_fd.rs
index f3b89b35..f8dc65fe 100644
--- a/tokio/tests/io_async_fd.rs
+++ b/tokio/tests/io_async_fd.rs
@@ -500,10 +500,10 @@ fn driver_shutdown_wakes_currently_pending() {
 
     std::mem::drop(rt);
 
-    // Being awoken by a rt drop does not return an error, currently...
-    let _ = futures::executor::block_on(readable).unwrap();
+    // The future was initialized **before** dropping the rt
+    assert_err!(futures::executor::block_on(readable));
 
-    // However, attempting to initiate a readiness wait when the rt is dropped is an error
+    // The future is initialized **after** dropping the rt.
     assert_err!(futures::executor::block_on(afd_a.readable()));
 }