From acd4beb50f748127ae53620de09b9a480d5a807b Mon Sep 17 00:00:00 2001
From: Marvin Jones <jonesmc8@gmail.com>
Date: Mon, 15 Jun 2026 15:18:14 -0400
Subject: [PATCH] added test for helper function

---
 lee/key_protocol/src/key_management/key_tree/mod.rs | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/lee/key_protocol/src/key_management/key_tree/mod.rs b/lee/key_protocol/src/key_management/key_tree/mod.rs
index ce1572b7..7e4b432c 100644
--- a/lee/key_protocol/src/key_management/key_tree/mod.rs
+++ b/lee/key_protocol/src/key_management/key_tree/mod.rs
@@ -340,6 +340,18 @@ mod tests {
         }
     }
 
+    #[test]
+    fn split_hash_splits_into_first_and_last_32_bytes() {
+        let mut hash_value = [0_u8; 64];
+        hash_value[..32].fill(0xAA);
+        hash_value[32..].fill(0xBB);
+
+        let (first, last) = split_hash(&hash_value);
+
+        assert_eq!(first, [0xAA; 32]);
+        assert_eq!(last, [0xBB; 32]);
+    }
+
     #[test]
     fn simple_key_tree() {
         let seed_holder = seed_holder_for_tests();