Fix Issue6631 - Disallow relative files paths in urllib*.open()
diff --git a/Lib/test/test_urllib.py b/Lib/test/test_urllib.py
index 085eecf..91aeb2f 100644
--- a/Lib/test/test_urllib.py
+++ b/Lib/test/test_urllib.py
@@ -134,6 +134,9 @@
         for line in self.returned_obj.__iter__():
             self.assertEqual(line, self.text)
 
+    def test_relativelocalfile(self):
+        self.assertRaises(ValueError,urllib.urlopen,'./' + self.pathname)
+
 class ProxyTests(unittest.TestCase):
 
     def setUp(self):