test: ID::to_u64 and ID::from_u64

.pre-commit-config.yaml

@@ -1 +1 @@
-/nix/store/9bf8g8scpkrma0rwv05b4bd1qc81gihg-pre-commit-config.json
+/nix/store/v35hg96mpn8sa4i4vk9qm1f4jdyb59yj-pre-commit-config.json

crates/cdk/src/nuts/nut02.rs

@@ -561,4 +561,15 @@ mod test {
         let id_from_uppercase = Id::from_str(&SHORT_KEYSET_ID.to_uppercase());
         assert!(id_from_uppercase.is_ok());
     }
+
+    #[test]
+    fn test_id_u64_conversion() {
+        let id = generate_random_id();
+        let u64_value = id.to_u64();
+        let converted_id = Id::from_u64(u64_value).unwrap();
+
+        assert_eq!(id, converted_id);
+        assert_eq!(id.version, converted_id.version);
+        assert_eq!(id.id, converted_id.id);
+    }
 }