From ef9ffcd1f4851e0602301bd87a46cc27d4026a40 Mon Sep 17 00:00:00 2001
From: Julien Malard-Adam <julien.malard@mail.mcgill.ca>
Date: Sun, 16 Feb 2025 16:41:43 +0100
Subject: [PATCH] Add test for https://github.com/orbitdb/orbitdb/pull/1221

---
 test/sync.test.js | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/test/sync.test.js b/test/sync.test.js
index b3d2190..5c2618e 100644
--- a/test/sync.test.js
+++ b/test/sync.test.js
@@ -720,5 +720,29 @@ describe('Sync protocol', function () {
       strictEqual(err.type, 'aborted')
       strictEqual(err.message, 'Read aborted')
     })
+
+    it('does not crash when no listeners are attached to the `error` event on `Sync.events`', async () => {
+      let err = null
+
+      const onError = (error) => {
+        (!err) && (err = error)
+      }
+
+      sync1 = await Sync({ ipfs: ipfs1, log: log1, timeout: timeoutTime })
+      sync2 = await Sync({ ipfs: ipfs2, log: log2, start: false, timeout: timeoutTime })
+
+      // `sync1.events` has no listener on `error`
+      sync2.events.on('error', onError)
+
+      await log1.append('hello1')
+
+      await sync2.start()
+
+      await waitFor(() => err !== null, () => true)
+
+      notStrictEqual(err, null)
+      strictEqual(err.type, 'aborted')
+      strictEqual(err.message, 'Read aborted')
+    })
   })
 })