diff --git a/src/source.rs b/src/source.rs
index 1991b62..9c9f476 100644
--- a/src/source.rs
+++ b/src/source.rs
@@ -1606,4 +1606,9 @@ mod tests {
             panic!("unexpected error type: {:?}", error);
         }
     }
+
+    #[test]
+    fn test_finished_pdu_check_timeout() {
+        // TODO: Implement.
+    }
 }