--- a/etwist/test/unittest_server.py	Wed Sep 14 09:10:58 2011 +0200
+++ b/etwist/test/unittest_server.py	Wed Sep 14 09:11:50 2011 +0200
@@ -69,7 +69,7 @@
 
     def test_cache(self):
         concat = ConcatFiles(self.config, ('cubicweb.ajax.js', 'jquery.js'))
-        self.failUnless(osp.isfile(concat.path))
+        self.assertTrue(osp.isfile(concat.path))
 
     def test_404(self):
         # when not in debug mode, should not crash