From f54b3a9c3112ea192fe37217de97f03adb13ced9 Mon Sep 17 00:00:00 2001
From: rurumimic <10915235+rurumimic@users.noreply.github.com>
Date: Sun, 15 Oct 2023 16:46:42 +0900
Subject: [PATCH] Implement Test for `root_of_single_item_tree()`

---
 core/src/merkle_tree.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/core/src/merkle_tree.rs b/core/src/merkle_tree.rs
index 750337ba..93470db8 100644
--- a/core/src/merkle_tree.rs
+++ b/core/src/merkle_tree.rs
@@ -208,7 +208,12 @@ mod test {
     #[test]
     /// Check the root of the tree with a single item, with the manual calculation.
     fn root_of_single_item_tree() {
-        // TODO
+        let key: Hash256 = Hash256::hash("hello world");
+        let merkle_tree: OneshotMerkleTree = OneshotMerkleTree::create(Vec::from([key]));
+        let root_hash: Hash256 = OneshotMerkleTree::root(&merkle_tree);
+
+        assert!(root_hash == key);
+        assert!(merkle_tree.hash_list.len() == 1);
     }
 
     #[test]