From bf63edac4b69607b5d656b2947904f361810598f Mon Sep 17 00:00:00 2001
From: overtrue <anzhengchao@gmail.com>
Date: Wed, 9 Sep 2026 11:19:39 +0800
Subject: [PATCH] test: keep native backlog fault errors typed

---
 crates/ecstore/src/data_movement/scanner_backlog.rs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/crates/ecstore/src/data_movement/scanner_backlog.rs b/crates/ecstore/src/data_movement/scanner_backlog.rs
index 246229031..5a5d819cc 100644
--- a/crates/ecstore/src/data_movement/scanner_backlog.rs
+++ b/crates/ecstore/src/data_movement/scanner_backlog.rs
@@ -201,6 +201,12 @@ pub mod test_util {
     use std::sync::atomic::{AtomicUsize, Ordering};
     use tokio::sync::Notify;
 
+    #[derive(Debug, thiserror::Error)]
+    #[error("injected native scanner backlog {phase} write failure")]
+    struct InjectedWriteFailure {
+        phase: &'static str,
+    }
+
     pub(super) struct WriteFault {
         set: Arc<SetDisks>,
         phase: &'static str,
@@ -279,7 +285,7 @@ pub mod test_util {
             return Ok(None);
         }
         if fault.fail_before_write {
-            return Err(Error::other(format!("injected native scanner backlog {phase} write failure")));
+            return Err(Error::other(InjectedWriteFailure { phase }));
         }
         Ok(Some(fault))
     }