From 5ba42268e892f4a10531a3eb2725ff20d2dea620 Mon Sep 17 00:00:00 2001
From: Michael Bolin <mbolin@openai.com>
Date: Fri, 1 May 2026 14:17:01 -0700
Subject: [PATCH] test: make async cancellation test deterministic

---
 codex-rs/async-utils/src/lib.rs | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/codex-rs/async-utils/src/lib.rs b/codex-rs/async-utils/src/lib.rs
index bd880ae1fb..523a424343 100644
--- a/codex-rs/async-utils/src/lib.rs
+++ b/codex-rs/async-utils/src/lib.rs
@@ -34,6 +34,7 @@ where
 mod tests {
     use super::*;
     use pretty_assertions::assert_eq;
+    use std::future::pending;
     use std::time::Duration;
     use tokio::task;
     use tokio::time::sleep;
@@ -58,12 +59,7 @@ mod tests {
             token_clone.cancel();
         });
 
-        let result = async {
-            sleep(Duration::from_millis(100)).await;
-            7
-        }
-        .or_cancel(&token)
-        .await;
+        let result = pending::<i32>().or_cancel(&token).await;
 
         cancel_handle.await.expect("cancel task panicked");
         assert_eq!(Err(CancelErr::Cancelled), result);