From c036b0db6f199373e15b7cd0498ecca0ebd5af00 Mon Sep 17 00:00:00 2001
From: Dr Maxim Orlovsky <orlovsky@pandoracore.com>
Date: Tue, 5 Apr 2022 22:43:52 +0200
Subject: [PATCH] Unit test for failing TapTree on builder containing hidden
 nodes.

---
 src/util/psbt/serialize.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/util/psbt/serialize.rs b/src/util/psbt/serialize.rs
index 589b4193..438693f9 100644
--- a/src/util/psbt/serialize.rs
+++ b/src/util/psbt/serialize.rs
@@ -388,6 +388,14 @@ mod tests {
         builder
     }
 
+    #[test]
+    fn taptree_hidden() {
+        let mut builder = compose_taproot_builder(0x51, &[2, 2, 2]);
+        builder = builder.add_leaf_with_ver(3, Script::from_hex("b9").unwrap(), LeafVersion::from_consensus(0xC2).unwrap()).unwrap();
+        builder = builder.add_hidden_node(3, sha256::Hash::default()).unwrap();
+        assert!(TapTree::from_inner(builder.clone()).is_err());
+    }
+
     #[test]
     fn taptree_roundtrip() {
         let mut builder = compose_taproot_builder(0x51, &[2, 2, 2, 3]);