Add default timeout for do_barrier
And check the result do_barrier in all calls.
diff --git a/tests/flow_expire.py b/tests/flow_expire.py
index 53d7181..1d05b6b 100644
--- a/tests/flow_expire.py
+++ b/tests/flow_expire.py
@@ -97,7 +97,7 @@
fe_logger.info("Inserting flow")
rv = self.controller.message_send(request)
self.assertTrue(rv != -1, "Error installing flow mod")
- do_barrier(self.controller)
+ self.assertEqual(do_barrier(self.controller), 0, "Barrier failed")
(response, pkt) = self.controller.poll(exp_msg=ofp.OFPT_FLOW_REMOVED,
timeout=test_timeout)