convert old fail* assertions to assert*
diff --git a/Lib/test/test_gettext.py b/Lib/test/test_gettext.py
index 0023941..d667819 100644
--- a/Lib/test/test_gettext.py
+++ b/Lib/test/test_gettext.py
@@ -306,7 +306,7 @@
         self._ = self.t.gettext
 
     def test_unicode_msgid(self):
-        unless = self.failUnless
+        unless = self.assertTrue
         unless(isinstance(self._(''), str))
         unless(isinstance(self._(''), str))