def test_blacklisted(self):
        BlacklistedName.objects.create(name='firefox')
        un = autocreate_username('firefox')
        assert un != 'firefox', un % 'Unexpected: %s'
dataset/ETHPy150Open mozilla/addons-server/src/olympia/users/tests/test_user_utils.py/TestAutoCreateUsername.test_blacklisted/swapped operands of `%`