convert old fail* assertions to assert*
diff --git a/Lib/test/test_xdrlib.py b/Lib/test/test_xdrlib.py
index 11a44ff..073448c 100644
--- a/Lib/test/test_xdrlib.py
+++ b/Lib/test/test_xdrlib.py
@@ -30,15 +30,15 @@
 
         self.assertEqual(up.unpack_int(), 42)
         self.assertEqual(up.unpack_uint(), 9)
-        self.assert_(up.unpack_bool() is True)
+        self.assertTrue(up.unpack_bool() is True)
 
         # remember position
         pos = up.get_position()
-        self.assert_(up.unpack_bool() is False)
+        self.assertTrue(up.unpack_bool() is False)
 
         # rewind and unpack again
         up.set_position(pos)
-        self.assert_(up.unpack_bool() is False)
+        self.assertTrue(up.unpack_bool() is False)
 
         self.assertEqual(up.unpack_uhyper(), 45)
         self.assertAlmostEqual(up.unpack_float(), 1.9)