From bcc7575e04c946b2edd0344f592d19d76403aac9 Mon Sep 17 00:00:00 2001
From: fiatjaf <fiatjaf@gmail.com>
Date: Tue, 14 Oct 2025 00:25:44 +0000
Subject: [PATCH] mmm: do random rescans in the fuzz test to ensure they don't
 break anything.

---
 eventstore/mmm/fuzz_test.go | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/eventstore/mmm/fuzz_test.go b/eventstore/mmm/fuzz_test.go
index dbbc86c..1dcbd48 100644
--- a/eventstore/mmm/fuzz_test.go
+++ b/eventstore/mmm/fuzz_test.go
@@ -87,6 +87,11 @@ func FuzzTest(f *testing.F) {
 			nTags[evt.ID] = len(evt.Tags)
 		}
 
+		// perform random rescans -- shouldn't break the database
+		if rnd.UintN(3) == 1 {
+			mmmm.Rescan()
+		}
+
 		// verify each layer has the correct events
 		for i, layer := range mmmm.layers {
 			count := 0
@@ -120,6 +125,11 @@ func FuzzTest(f *testing.F) {
 			}
 		}
 
+		// perform random rescans -- shouldn't break the database
+		if rnd.UintN(3) == 1 {
+			mmmm.Rescan()
+		}
+
 		for id, deletedlayers := range deleted {
 			evt, foundlayers := mmmm.GetByID(id)
 
@@ -162,6 +172,11 @@ func FuzzTest(f *testing.F) {
 			}
 		}
 
+		// perform random rescans -- shouldn't break the database
+		if rnd.UintN(3) == 1 {
+			mmmm.Rescan()
+		}
+
 		// now delete a layer and events that only exist in that layer should vanish
 		layer := mmmm.layers[rnd.Int()%len(mmmm.layers)]
 		eventsThatShouldVanish := make([]nostr.ID, 0, nevents/2)
@@ -171,9 +186,19 @@ func FuzzTest(f *testing.F) {
 			}
 		}
 
+		// perform random rescans -- shouldn't break the database
+		if rnd.UintN(3) == 1 {
+			mmmm.Rescan()
+		}
+
 		err = mmmm.DropLayer(layer.name)
 		require.NoError(t, err)
 
+		// perform random rescans -- shouldn't break the database
+		if rnd.UintN(3) == 1 {
+			mmmm.Rescan()
+		}
+
 		for _, id := range eventsThatShouldVanish {
 			v, ils := mmmm.GetByID(id)
 			require.Nil(t, v)