diff --git a/src/stream/src/task/barrier_manager/tests.rs b/src/stream/src/task/barrier_manager/tests.rs
index ae248facc0e5f..c3624b93440f7 100644
--- a/src/stream/src/task/barrier_manager/tests.rs
+++ b/src/stream/src/task/barrier_manager/tests.rs
@@ -76,7 +76,7 @@ async fn test_managed_barrier_collection() -> StreamResult<()> {
 }
 
 #[tokio::test]
-async fn test_managed_barrier_collection_before_send_request() -> StreamResult<()> {
+async fn test_managed_barrier_collection_separately() -> StreamResult<()> {
     let (actor_op_tx, manager) = LocalBarrierManager::spawn_for_test().await;
 
     let register_sender = |actor_id: u32| {
@@ -106,8 +106,8 @@ async fn test_managed_barrier_collection_before_send_request() -> StreamResult<(
     let barrier = Barrier::new_test_barrier(curr_epoch);
     let epoch = barrier.epoch.prev;
 
-    // Collect a barrier before sending
-    manager.collect(extra_actor_id, &barrier);
+    // Read the mutation after receiving the barrier from remote input.
+    let mutation_reader = pin!(manager.read_barrier_mutation(&barrier));
 
     // Send the barrier to all actors
     actor_op_tx
@@ -115,6 +115,12 @@ async fn test_managed_barrier_collection_before_send_request() -> StreamResult<(
         .await
         .unwrap();
 
+    let mutation = mutation_reader.await.unwrap();
+    assert_eq!(mutation, barrier.mutation);
+
+    // Collect a barrier before sending
+    manager.collect(extra_actor_id, &barrier);
+
     // Collect barriers from actors
     let collected_barriers = rxs
         .iter_mut()