From 54feadd2c1989af865d36abdfb5f20b8a7bbf91e Mon Sep 17 00:00:00 2001
From: Thomas Haller <thaller@redhat.com>
Date: Tue, 12 Jan 2021 21:25:50 +0100
Subject: [PATCH] lldp/tests: make assertion in _test_recv_fixture_setup()
 clearer

... to print the errno value on failure.
---
 src/devices/tests/test-lldp.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/devices/tests/test-lldp.c b/src/devices/tests/test-lldp.c
index 2fc237fccc..7762ce93d7 100644
--- a/src/devices/tests/test-lldp.c
+++ b/src/devices/tests/test-lldp.c
@@ -813,10 +813,13 @@ _test_recv_fixture_setup(TestRecvFixture *fixture, gconstpointer user_data)
     } else {
         int          s;
         struct ifreq ifr = {};
+        int          r;
 
         ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
         nm_utils_ifname_cpy(ifr.ifr_name, TEST_IFNAME);
-        g_assert(ioctl(fd, TUNSETIFF, &ifr) >= 0);
+
+        r = ioctl(fd, TUNSETIFF, &ifr);
+        g_assert_cmpint(r, >=, 0);
 
         /* Bring the interface up */
         s = socket(AF_INET, SOCK_DGRAM | SOCK_CLOEXEC, 0);