Fix Issue6631 - Disallow relative files paths in urllib*.open()
diff --git a/Lib/test/test_urllib2net.py b/Lib/test/test_urllib2net.py
index bd2c467..dcdbfe8 100644
--- a/Lib/test/test_urllib2net.py
+++ b/Lib/test/test_urllib2net.py
@@ -126,6 +126,8 @@
         finally:
             os.remove(TESTFN)
 
+        self.assertRaises(ValueError, urllib2.urlopen,'./relative_path/to/file')
+
     # XXX Following test depends on machine configurations that are internal
     # to CNRI.  Need to set up a public server with the right authentication
     # configuration for test purposes.