1 files changed, 3 insertions, 0 deletions
diff --git a/test/test-standalone.py b/test/test-standalone.py
index 157ec4a..c091228 100755
--- a/test/test-standalone.py
+++ b/test/test-standalone.py
@@ -560,6 +560,9 @@ class TestMessageMarshalling(unittest.TestCase):
         finally:
             os.close(plain_fd)
 
+        with self.assertRaises(ValueError):
+            types.UnixFd(-1)
+
 class TestMatching(unittest.TestCase):
     def setUp(self):
         from _dbus_bindings import SignalMessage