diff --git a/tests/error_tests.rs b/tests/error_tests.rs
index 1fe62c9..b061960 100644
--- a/tests/error_tests.rs
+++ b/tests/error_tests.rs
@@ -28,3 +28,10 @@ fn bad_json() {
     assert!(res.is_err());
     println!("{:#?}", res);
 }
+
+#[test]
+#[should_panic]
+fn invalid_unwrap() {
+    let wrapped = JSONValue::from(5.2f64);
+    let invalid: String = wrapped.unwrap();
+}