convert usage of fail* to assert*
diff --git a/Lib/test/test_dbm.py b/Lib/test/test_dbm.py
index 1627fff..43f8a5b 100755
--- a/Lib/test/test_dbm.py
+++ b/Lib/test/test_dbm.py
@@ -21,9 +21,9 @@
             self.d[k] = v
         self.assertEqual(sorted(self.d.keys()), sorted(k for (k, v) in a))
         for k, v in a:
-            self.assert_(k in self.d)
+            self.assertTrue(k in self.d)
             self.assertEqual(self.d[k], v)
-        self.assert_('xxx' not in self.d)
+        self.assertTrue('xxx' not in self.d)
         self.assertRaises(KeyError, lambda: self.d['xxx'])
         self.d.close()