label: add error case in test for from_ascii.

hickory-dns · Oct 14, 2022 · d4d065e · d4d065e
1 parent 8ee4cb7
commit d4d065e
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/crates/proto/src/rr/domain/label.rs b/crates/proto/src/rr/domain/label.rs
@@ -480,6 +480,12 @@ mod tests {
         );
     }
 
+    #[test]
+    fn test_from_ascii_adversial_utf8() {
+        let expect_err = Label::from_ascii("🦀");
+        assert!(expect_err.is_err());
+    }
+
     #[test]
     fn test_to_lowercase() {
         assert_ne!(Label::from_ascii("ABC").unwrap().to_string(), "abc");