Remove unwrap_lib_err method from UnwrapError test trait

This change marks the next step in getting rid of the UnwrapError test
trait. Specifically, it removes its unwrap_lib_err method.

1 files changed, 9 insertions, 8 deletions

diff --git a/src/tests/otp.rs b/src/tests/otp.rs
index 837b075..8802d9e 100644
--- a/src/tests/otp.rs
+++ b/src/tests/otp.rs
@@ -33,15 +33,16 @@ fn set_invalid_slot_raw(model: nitrokey::Model) {
 
 #[test_device]
 fn set_invalid_slot(model: nitrokey::Model) {
-  let res = Nitrocli::with_model(model).handle(&["otp", "set", "100", "name", "1234", "-f", "hex"]);
-
-  assert_eq!(
-    res.unwrap_lib_err(),
-    (
-      Some("Could not write OTP slot"),
-      nitrokey::LibraryError::InvalidSlot
-    )
+  let err = Nitrocli::with_model(model)
+    .handle(&["otp", "set", "100", "name", "1234", "-f", "hex"])
+    .unwrap_err()
+    .to_string();
+  let expected = format!(
+    "Could not write OTP slot: {}",
+    nitrokey::Error::LibraryError(nitrokey::LibraryError::InvalidSlot)
   );
+
+  assert_eq!(err, expected);
 }
 
 #[test_device]