Added named (but not numbered) attributes to sys.getwindowsversion() test.
diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py
index e05b0da..f58d900 100644
--- a/Lib/test/test_sys.py
+++ b/Lib/test/test_sys.py
@@ -219,6 +219,10 @@
         self.assertIsInstance(v.build, int)
         self.assertIsInstance(v.platform, int)
         self.assertIsInstance(v.service_pack, str)
+        self.assertIsInstance(v.service_pack_minor, int)
+        self.assertIsInstance(v.service_pack_major, int)
+        self.assertIsInstance(v.suite_mask, int)
+        self.assertIsInstance(v.product_type, int)
         self.assertEqual(v[0], v.major)
         self.assertEqual(v[1], v.minor)
         self.assertEqual(v[2], v.build)