convert usage of fail* to assert*
diff --git a/Lib/test/test_bufio.py b/Lib/test/test_bufio.py
index 48cc0f3..108b1e1 100644
--- a/Lib/test/test_bufio.py
+++ b/Lib/test/test_bufio.py
@@ -34,7 +34,7 @@
             line = f.readline()
             self.assertEqual(line, s)
             line = f.readline()
-            self.assert_(not line) # Must be at EOF
+            self.assertTrue(not line) # Must be at EOF
             f.close()
         finally:
             support.unlink(support.TESTFN)