Factor out common boilerplate for test_support
diff --git a/Lib/test/test_bool.py b/Lib/test/test_bool.py
index d9fb887..fe99b85 100644
--- a/Lib/test/test_bool.py
+++ b/Lib/test/test_bool.py
@@ -331,9 +331,7 @@
         self.assertEqual(cPickle.dumps(False, True), "I00\n.")
 
 def test_main():
-    suite = unittest.TestSuite()
-    suite.addTest(unittest.makeSuite(BoolTest))
-    test_support.run_suite(suite)
+    test_support.run_classtests(BoolTest)
 
 if __name__ == "__main__":
     test_main()