winVersion unittests/operator check: test with 'Windows 8' instead of…

… getWinVer when checking operators. Re nvaccess#11837.

An important reminder from Reef Turner (NV Access): make unit tests system-independent i.e. do not use winVersion.getWinVer function when testing operators. Instead, test 'Windows 8' a.k.a. first version to support audio ducking.

tests/unit/test_winVersion.py

@@ -44,8 +44,13 @@ def test_moreRecentWinVer(self):
 			minor=1,
 			build=7601
 		)
+		audioDuckingAvailable = winVersion.WinVersion(
+			major=6,
+			minor=2,
+			build=9200
+		)
 		self.assertGreaterEqual(
-			winVersion.getWinVer(), minimumWinVer
+			audioDuckingAvailable, minimumWinVer
 		)
 
 	def test_isWin10(self):