From 3920c444cbf9ae8bee39b8d50fa48e7963c17fe7 Mon Sep 17 00:00:00 2001
From: Peter Steinberger <steipete@gmail.com>
Date: Sat, 14 Mar 2026 00:27:40 +0000
Subject: [PATCH] test: tighten json file lock coverage

---
 src/infra/json-files.test.ts | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/src/infra/json-files.test.ts b/src/infra/json-files.test.ts
index d2d0fa600f5..309fd59ae8b 100644
--- a/src/infra/json-files.test.ts
+++ b/src/infra/json-files.test.ts
@@ -65,4 +65,24 @@ describe("json file helpers", () => {
     await expect(second).resolves.toBe("ok");
     expect(events).toEqual(["first:start", "first:end", "second:start", "second:end"]);
   });
+
+  it("releases the async lock after synchronous throws", async () => {
+    const withLock = createAsyncLock();
+    const events: string[] = [];
+
+    const first = withLock(async () => {
+      events.push("first:start");
+      throw new Error("sync boom");
+    });
+
+    const second = withLock(async () => {
+      events.push("second:start");
+      events.push("second:end");
+      return "ok";
+    });
+
+    await expect(first).rejects.toThrow("sync boom");
+    await expect(second).resolves.toBe("ok");
+    expect(events).toEqual(["first:start", "second:start", "second:end"]);
+  });
 });