From 241108f5a76dcb23a89790fece3e5b03df925b83 Mon Sep 17 00:00:00 2001
From: Rostyslav Tyshko <tyshko.rostyslav@gmail.com>
Date: Wed, 23 Oct 2024 02:00:55 +0200
Subject: [PATCH] add test_insert_single_item

---
 storage/src/nullifier_sparse_merkle_tree.rs | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/storage/src/nullifier_sparse_merkle_tree.rs b/storage/src/nullifier_sparse_merkle_tree.rs
index dbb7a3d..ffa75eb 100644
--- a/storage/src/nullifier_sparse_merkle_tree.rs
+++ b/storage/src/nullifier_sparse_merkle_tree.rs
@@ -138,4 +138,15 @@ mod tests {
         let tree = NullifierSparseMerkleTree::new();
         assert!(tree.curr_root.is_none());
     }
+
+    #[test]
+    fn test_insert_single_item() {
+        let mut tree = NullifierSparseMerkleTree::new();
+        let nullifier = create_nullifier([1u8; 32]); // Sample 32-byte hash
+
+        let result = tree.insert_item(nullifier);
+        assert!(result.is_ok());
+        assert!(tree.curr_root.is_some());
+    }
+
 }