import sys

if sys.maxsize > 2 ** 32:
    from PyObjCTools.TestSupport import TestCase, min_os_level
    import Contacts

    class TestCNGroup(TestCase):
        @min_os_level("10.11")
        def testConstants(self):
            self.assertIsInstance(Contacts.CNGroupIdentifierKey, str)
            self.assertIsInstance(Contacts.CNGroupNameKey, str)
