From 0d3925130f027e4db8fbeeea387e95d6448c0c66 Mon Sep 17 00:00:00 2001
From: Neil <4138956+nwparker@users.noreply.github.com>
Date: Fri, 21 Aug 2026 23:54:39 -0700
Subject: [PATCH] test(automations): pin the day-restriction divergence a
 stepped bare start exposes

Refs #15896
---
 src/shared/automation-schedules.test.ts | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/shared/automation-schedules.test.ts b/src/shared/automation-schedules.test.ts
index 7c8421192f7..69e8ff8a09e 100644
--- a/src/shared/automation-schedules.test.ts
+++ b/src/shared/automation-schedules.test.ts
@@ -241,6 +241,15 @@ describe('automation schedules', () => {
     expect(nextAutomationOccurrenceAfter('0 9 1 * 0/1', CRON_ANCHOR, afterFirst)).not.toBe(
       nextAutomationOccurrenceAfter('0 9 1 * 0', CRON_ANCHOR, afterFirst)
     )
+    // Known divergence (#15896): vixie restricts off a literal `*`, so it ORs `1/1` with Mondays
+    // and fires Wed Jul 1 as well. Pinned so the follow-up has to flip it on purpose.
+    const beforeJulyFirst = new Date('2026-06-30T10:00:00').getTime()
+    expect(nextAutomationOccurrenceAfter('0 0 1/1 * 1', CRON_ANCHOR, beforeJulyFirst)).toBe(
+      nextAutomationOccurrenceAfter('0 0 * * 1', CRON_ANCHOR, beforeJulyFirst)
+    )
+    expect(nextAutomationOccurrenceAfter('0 0 1/1 * 1', CRON_ANCHOR, beforeJulyFirst)).not.toBe(
+      nextAutomationOccurrenceAfter('0 0 1 * 1', CRON_ANCHOR, beforeJulyFirst)
+    )
   })
 
   it('keeps wildcard and range steps intact and applies steps per list element', () => {