diff --git a/src/geometry.rs b/src/geometry.rs
index b059a78..e6f4c6c 100644
--- a/src/geometry.rs
+++ b/src/geometry.rs
@@ -47,4 +47,10 @@ mod tests {
         assert_eq!(plane.point, p);
         assert_eq!(plane.normal, n);
     }
+
+    #[test]
+    #[should_panic]
+    fn foo() {
+        //panic!("This code panics!");
+    }
 }