From 1e3621a88bc38e8256a02ef1425e5889815d47c3 Mon Sep 17 00:00:00 2001
From: David Wilson <dw@botanicus.net>
Date: Fri, 9 Aug 2019 19:26:52 +0100
Subject: [PATCH] tests: fix format string error

---
 tests/router_test.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/router_test.py b/tests/router_test.py
index 2b4a9d78..e42a065a 100644
--- a/tests/router_test.py
+++ b/tests/router_test.py
@@ -357,6 +357,7 @@ def test_siblings_cant_talk(router):
     msg = mitogen.core.Router.unidirectional_msg % (
         l2.context_id,
         l1.context_id,
+        mitogen.context_id,
     )
     assert msg in str(e)
     assert 'routing mode prevents forward of ' in logs.stop()