From d03c0cfd235a08b6bf7671ad4a55f9f731a9b58f Mon Sep 17 00:00:00 2001
From: hanafish <1106510024@qq.com>
Date: Tue, 29 Sep 2026 15:04:15 +0800
Subject: [PATCH] test(issue-time): use elapsed durations in relative age
 fixtures

---
 .../hooks/__tests__/workstationIssueHelpers.test.ts  | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/modules/WorkStation/CodeEditor/Panels/EditorPrimarySidebar/hooks/__tests__/workstationIssueHelpers.test.ts b/src/modules/WorkStation/CodeEditor/Panels/EditorPrimarySidebar/hooks/__tests__/workstationIssueHelpers.test.ts
index 91b19d5152..205c6f9096 100644
--- a/src/modules/WorkStation/CodeEditor/Panels/EditorPrimarySidebar/hooks/__tests__/workstationIssueHelpers.test.ts
+++ b/src/modules/WorkStation/CodeEditor/Panels/EditorPrimarySidebar/hooks/__tests__/workstationIssueHelpers.test.ts
@@ -230,16 +230,16 @@ describe("getLabelColorStyle", () => {
 // formatTimeAgo
 // ============================================================
 describe("formatTimeAgo", () => {
+  const dayMs = 24 * 60 * 60 * 1000;
+
   function daysAgo(n: number): string {
-    const d = new Date();
-    d.setDate(d.getDate() - n);
-    return d.toISOString();
+    return new Date(Date.now() - n * dayMs).toISOString();
   }
 
   function monthsAgo(n: number): string {
-    const d = new Date();
-    d.setDate(d.getDate() - n * 30);
-    return d.toISOString();
+    // formatRelativeTime defines a month as 30 elapsed days. Subtract elapsed
+    // time here too, so a DST transition cannot turn 11 months into 10.
+    return new Date(Date.now() - n * 30 * dayMs).toISOString();
   }
 
   it('returns "Today" for the current date', () => {