Issue #7849: Now the utility ``check_warnings`` verifies if the warnings are
effectively raised.  A new utility ``check_py3k_warnings`` deals with py3k warnings.
diff --git a/Lib/test/test_fileio.py b/Lib/test/test_fileio.py
index 5589d05..5057941 100644
--- a/Lib/test/test_fileio.py
+++ b/Lib/test/test_fileio.py
@@ -390,7 +390,7 @@
         self.assertRaises(TypeError, _FileIO, "1", 0, 0)
 
     def testWarnings(self):
-        with check_warnings() as w:
+        with check_warnings(quiet=True) as w:
             self.assertEqual(w.warnings, [])
             self.assertRaises(TypeError, _FileIO, [])
             self.assertEqual(w.warnings, [])