From fc1e8a2beb6f1d501160ddd65d572d54075c54f3 Mon Sep 17 00:00:00 2001
From: m4air <m4air@Mac.localdomain>
Date: Sun, 13 Sep 2026 20:03:57 -0700
Subject: [PATCH] test(crash-reporting): unpin the process-gone details from
 the CI host
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buildProcessGoneCrashDetails spreads getSystemMemoryDetails, which now
reaches the real cgroup and PSI files. On ubuntu-latest — where the unit
shards run — "flags a renderer-gone record whose live metrics carry only
survivors" asserts an exact object and gains thirteen systemMemoryCgroup*
/ systemMemoryStall* keys plus a PressureSignal, so it fails on CI while
passing on macOS. Proven by pointing the mount and procfs constants at a
fake cgroup tree and relaxing the platform guards.

pre-gone-host-memory.test.ts already stubs both readers for this reason;
this is the same stub in the one other file that builds the details.
---
 src/main/crash-reporting/process-gone-diagnostics.test.ts | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/main/crash-reporting/process-gone-diagnostics.test.ts b/src/main/crash-reporting/process-gone-diagnostics.test.ts
index 6a6ec410733..53cedf6e7e4 100644
--- a/src/main/crash-reporting/process-gone-diagnostics.test.ts
+++ b/src/main/crash-reporting/process-gone-diagnostics.test.ts
@@ -7,6 +7,8 @@ import {
   startPreGoneCrashSampling
 } from './process-gone-diagnostics'
 import { setSystemMemoryInfoReaderForTest } from './system-memory-details'
+import { setLinuxCgroupMemoryLimitReaderForTest } from './linux-cgroup-memory-limit'
+import { setLinuxMemoryPressureStallReaderForTest } from './linux-memory-pressure-stall'
 
 type MetricFixture = {
   pid?: number
@@ -29,10 +31,16 @@ describe('process gone diagnostics', () => {
   beforeEach(() => {
     resetPreGoneCrashSamplingForTest()
     setSystemMemoryInfoReaderForTest(null)
+    // buildProcessGoneCrashDetails spreads getSystemMemoryDetails, so on a Linux
+    // runner the real cgroup and PSI files add keys to the exact-shape assertions.
+    setLinuxCgroupMemoryLimitReaderForTest(() => undefined)
+    setLinuxMemoryPressureStallReaderForTest(() => undefined)
   })
 
   afterEach(() => {
     vi.useRealTimers()
+    setLinuxCgroupMemoryLimitReaderForTest(null)
+    setLinuxMemoryPressureStallReaderForTest(null)
   })
 
   it('summarizes Electron process memory by crash-report-friendly buckets', () => {