From 7dee8b28f121f3e5178dabbc8866acc3b06634b8 Mon Sep 17 00:00:00 2001
From: Jesse Glick <jglick@cloudbees.com>
Date: Fri, 1 Dec 2023 13:56:29 -0500
Subject: [PATCH] Clearer reproducer

---
 .../java/jenkins/model/PeepholePermalink.java |  2 +-
 .../jenkins/model/PeepholePermalinkTest.java  | 19 +++++++++++++++++--
 2 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/core/src/main/java/jenkins/model/PeepholePermalink.java b/core/src/main/java/jenkins/model/PeepholePermalink.java
index 50dbdb39bb83..256dc438d4ae 100644
--- a/core/src/main/java/jenkins/model/PeepholePermalink.java
+++ b/core/src/main/java/jenkins/model/PeepholePermalink.java
@@ -135,7 +135,7 @@ protected File getPermalinkFile(Job<?, ?> job) {
         return b;
     }
 
-    static @NonNull Map<String, Integer> cacheFor(@NonNull File buildDir) {
+    private static @NonNull Map<String, Integer> cacheFor(@NonNull File buildDir) {
         synchronized (caches) {
             Map<String, Integer> cache = caches.get(buildDir);
             if (cache == null) {
diff --git a/core/src/test/java/jenkins/model/PeepholePermalinkTest.java b/core/src/test/java/jenkins/model/PeepholePermalinkTest.java
index ad1ac7a7f3e6..35593a7ac623 100644
--- a/core/src/test/java/jenkins/model/PeepholePermalinkTest.java
+++ b/core/src/test/java/jenkins/model/PeepholePermalinkTest.java
@@ -28,7 +28,7 @@
 import static org.hamcrest.Matchers.is;
 
 import hudson.model.PermalinkProjectAction;
-import java.io.File;
+import hudson.model.Run;
 import org.junit.Test;
 
 public final class PeepholePermalinkTest {
@@ -39,7 +39,22 @@ public void classLoadingDeadlock() throws Exception {
             assertThat("successfully loaded LAST_STABLE_BUILD", PermalinkProjectAction.Permalink.LAST_STABLE_BUILD.getId(), is("lastStableBuild"));
         });
         t.start();
-        PeepholePermalink.cacheFor(new File("."));
+        new PeepholePermalink() {
+            @Override
+            public boolean apply(Run<?, ?> run) {
+                throw new UnsupportedOperationException();
+            }
+
+            @Override
+            public String getDisplayName() {
+                throw new UnsupportedOperationException();
+            }
+
+            @Override
+            public String getId() {
+                throw new UnsupportedOperationException();
+            }
+        };
         t.join();
     }