[2252] explicitly check if something is None, not just eval it as boolean.

diff --git a/src/bin/xfrin/tests/xfrin_test.py b/src/bin/xfrin/tests/xfrin_test.py
index fd41fed72715a24b084564f29030f6034a592a98..ce0b4d4882fd34c0880a66c0b010a4e489ea7f5a 100644 (file)
--- a/src/bin/xfrin/tests/xfrin_test.py
+++ b/src/bin/xfrin/tests/xfrin_test.py
@@ -1076,7 +1076,7 @@ class TestAXFR(TestXfrinConnection):
             c = MockXfrinConnection({}, TEST_ZONE_NAME, RRClass.CH, None,
                                     threading.Event(), info)
             c.init_socket()
-            if ver:
+            if ver is not None:
                 self.assertEqual(ver, c._get_ipver_str())
             else:
                 self.assertRaises(ValueError, c._get_ipver_str)