From 4de3f95f1f6fca660266749902a21dc3a1fe0457 Mon Sep 17 00:00:00 2001
From: Rostyslav Tyshko <tyshko.rostyslav@gmail.com>
Date: Fri, 25 Oct 2024 00:39:55 +0200
Subject: [PATCH] add test_get_membership_proof_not_exists

---
 utxo/src/utxo_tree.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/utxo/src/utxo_tree.rs b/utxo/src/utxo_tree.rs
index b696411..9e78aff 100644
--- a/utxo/src/utxo_tree.rs
+++ b/utxo/src/utxo_tree.rs
@@ -175,5 +175,15 @@ mod tests {
         assert!(proof.is_some());
     }
 
+    #[test]
+    fn test_get_membership_proof_not_exists() {
+        let mut smt = UTXOSparseMerkleTree::new();
 
+        // Try fetching proof for a non-existent UTXO hash
+        let non_existent_hash = TreeHashType::default();
+        let proof = smt.get_membership_proof(non_existent_hash).unwrap();
+
+        // Test no proof is generated for a non-existent UTXO
+        assert!(proof.is_none());
+    }
 }