From ab1dbaa8bd4569ece0a0f339d64846f1af476a9a Mon Sep 17 00:00:00 2001
From: Neil <4138956+nwparker@users.noreply.github.com>
Date: Sun, 23 Aug 2026 19:25:23 -0700
Subject: [PATCH] test(persistence): assert sidecar durability barrier

---
 src/main/persistence-split-pane-incarnation.test.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/main/persistence-split-pane-incarnation.test.ts b/src/main/persistence-split-pane-incarnation.test.ts
index b092c3d7d9e..3bb135dd9e9 100644
--- a/src/main/persistence-split-pane-incarnation.test.ts
+++ b/src/main/persistence-split-pane-incarnation.test.ts
@@ -348,7 +348,11 @@ describe('Store', () => {
       },
       terminalPtyIncarnationsByPaneKey: { [paneKey]: 'inc-stale' }
     })
-    vi.spyOn(store, 'flushOrThrow').mockImplementationOnce(() => {
+    const storeInternals = store as unknown as {
+      workspaceSessionSidecars: { flushSync: (trigger?: string) => void }
+    }
+    const sidecarStore = storeInternals.workspaceSessionSidecars
+    vi.spyOn(sidecarStore, 'flushSync').mockImplementationOnce(() => {
       throw new Error('disk full')
     })