Issue #7766: Change sys.getwindowsversion() return value to a named tuple and add the additional members returned in an OSVERSIONINFOEX structure. The new members are service_pack_major, service_pack_minor, suite_mask, and product_type.
diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py
index ccef2c0..d9213f1 100644
--- a/Lib/test/test_sys.py
+++ b/Lib/test/test_sys.py
@@ -2,6 +2,7 @@
 import unittest, test.test_support
 import sys, cStringIO, os
 import struct
+import operator
 
 class SysModuleTest(unittest.TestCase):
 
@@ -205,13 +206,28 @@
     def test_getwindowsversion(self):
         if hasattr(sys, "getwindowsversion"):
             v = sys.getwindowsversion()
-            self.assertIsInstance(v, tuple)
+            self.assertTrue(isinstance(v[:], tuple))
             self.assertEqual(len(v), 5)
             self.assertIsInstance(v[0], int)
             self.assertIsInstance(v[1], int)
             self.assertIsInstance(v[2], int)
             self.assertIsInstance(v[3], int)
             self.assertIsInstance(v[4], str)
+            self.assertRaises(IndexError, operator.getitem, v, 5)
+            self.assertIsInstance(v.major, int)
+            self.assertIsInstance(v.minor, int)
+            self.assertIsInstance(v.build, int)
+            self.assertIsInstance(v.platform, int)
+            self.assertIsInstance(v.service_pack, str)
+            self.assertEqual(v[0], v.major)
+            self.assertEqual(v[1], v.minor)
+            self.assertEqual(v[2], v.build)
+            self.assertEqual(v[3], v.platform)
+            self.assertEqual(v[4], v.service_pack)
+
+            # This is how platform.py calls it. Make sure tuple
+            #  still has 5 elements
+            maj, min, buildno, plat, csd = sys.getwindowsversion()
 
     def test_dlopenflags(self):
         if hasattr(sys, "setdlopenflags"):