1 files changed, 10 insertions, 0 deletions
diff --git a/tests/otp.rs b/tests/otp.rs
index fcf0020..712f7a2 100644
--- a/tests/otp.rs
+++ b/tests/otp.rs
@@ -125,6 +125,11 @@ fn hotp_error(device: DeviceWrapper) {
         Err(CommandError::InvalidSlot),
         admin.write_hotp_slot(slot_data, 0)
     );
+    let slot_data = OtpSlotData::new(1, "test", "foobar", OtpMode::SixDigits);
+    assert_eq!(
+        Err(CommandError::InvalidHexString),
+        admin.write_hotp_slot(slot_data, 0)
+    );
     let code = admin.get_hotp_code(4);
     assert_eq!(CommandError::InvalidSlot, code.unwrap_err());
 }
@@ -266,6 +271,11 @@ fn totp_error(device: DeviceWrapper) {
         Err(CommandError::InvalidSlot),
         admin.write_totp_slot(slot_data, 0)
     );
+    let slot_data = OtpSlotData::new(4, "test", "foobar", OtpMode::SixDigits);
+    assert_eq!(
+        Err(CommandError::InvalidHexString),
+        admin.write_totp_slot(slot_data, 0)
+    );
     let code = admin.get_totp_code(20);
     assert_eq!(CommandError::InvalidSlot, code.unwrap_err());
 }