From 34af8dcfcd006294f43c7d1f3f5963eee7d0ef71 Mon Sep 17 00:00:00 2001
From: ryan <ryan@distrust.co>
Date: Mon, 25 Sep 2023 17:11:29 -0500
Subject: [PATCH] keyfork-derive-util: add test requiring ed25519 hardened
 derivation

---
 keyfork-derive-util/src/tests.rs | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/keyfork-derive-util/src/tests.rs b/keyfork-derive-util/src/tests.rs
index 059131b..0200794 100644
--- a/keyfork-derive-util/src/tests.rs
+++ b/keyfork-derive-util/src/tests.rs
@@ -102,6 +102,17 @@ fn ed25519() {
     }
 }
 
+#[cfg(feature = "ed25519")]
+#[test]
+#[should_panic]
+fn panics_with_unhardened_derivation() {
+    use ed25519_dalek::SigningKey;
+
+    let seed = hex!("000102030405060708090a0b0c0d0e0f");
+    let xkey = ExtendedPrivateKey::<SigningKey>::new(seed).unwrap();
+    xkey.derive_path(&DerivationPath::from_str("m/0").unwrap()).unwrap();
+}
+
 #[cfg(feature = "ed25519")]
 #[test]
 #[should_panic]