Test cases suggested by Serhiy

Author: barneygale

Lib/test/test_urllib.py

@@ -1590,8 +1590,10 @@ def test_url2pathname_resolve_host(self):
     def test_url2pathname_win(self):
         fn = urllib.request.url2pathname
         self.assertEqual(fn('/C:/'), 'C:\\')
+        self.assertEqual(fn('//C:'), 'C:')
         self.assertEqual(fn('//C:/'), 'C:\\')
         self.assertEqual(fn('//C:\\'), 'C:\\')
+        self.assertEqual(fn('//C:80/'), 'C:80\\')
         self.assertEqual(fn("///C|"), 'C:')
         self.assertEqual(fn("///C:"), 'C:')
         self.assertEqual(fn('///C:/'), 'C:\\')