selftest: Improve an error message

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Autobuild-User(master): Douglas Bagnall <dbagnall@samba.org>
Autobuild-Date(master): Fri Jan 11 06:01:01 CET 2019 on sn-devel-144

diff --git a/python/samba/tests/getdcname.py b/python/samba/tests/getdcname.py
index de3fd3df5e0f3cc3d832a2c2891cfe0e1a4f1d0a..5b777478bf788769793090270fa611cdd8e6e5a1 100644 (file)
--- a/python/samba/tests/getdcname.py
+++ b/python/samba/tests/getdcname.py
@@ -275,7 +275,8 @@ class GetDCNameEx(samba.tests.TestCase):
                                                     flags=netlogon.DS_RETURN_DNS_NAME,
                                                     ex2=False)
         except WERRORError as e:
-            self.fail("Failed to succeed over winbind: " + str(e))
+            self.fail("get_dc_name (domain=%s,site=%s) over winbind failed: %s"
+                      % (self.trust_domain, site, e))
 
         self.assertTrue(response_trust is not None)
         self.assertEqual(response_trust.domain_name.lower(),