def setUp(self):
        self.DNSNAME = smtp.DNSNAME
        smtp.DNSNAME = ''
Test that the round() function works properly.
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/mail/test/test_mail.py/ProcessAliasTestCase.setUp--crossover with--dataset/ETHPy150Open mozilla/app-validator/tests/js/test_math.py/TestMathFuncs.test_round