From 40add915be5c5d204d85474a2704362cb635ef6d Mon Sep 17 00:00:00 2001
From: Eugene Siegel <elzeigel@gmail.com>
Date: Wed, 26 Aug 2026 17:18:38 +0100
Subject: [PATCH] test: Add reset to CuckooCache

Add a method that clears and resets CuckooCache, intended for
use in tests only. Without this, fuzz tests may reuse the cache
across iterations, resulting in instability.
---
 src/cuckoocache.h | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/cuckoocache.h b/src/cuckoocache.h
index e25f691341f..a064607537c 100644
--- a/src/cuckoocache.h
+++ b/src/cuckoocache.h
@@ -329,7 +329,7 @@ public:
     /** setup initializes the container to store no more than new_size
      * elements and no less than 2 elements.
      *
-     * setup should only be called once.
+     * setup should only be called once. TestOnlyReset() is the exception.
      *
      * @param new_size the desired number of elements to store
      * @returns the maximum number of elements storable
@@ -483,6 +483,14 @@ public:
             }
         return false;
     }
+
+    /** Empty the cache and re-run setup(). */
+    void TestOnlyReset()
+    {
+        table.clear();
+        epoch_flags.clear();
+        setup(0);
+    }
 };
 } // namespace CuckooCache