def test_otherLocals(self):
        result = self.evaluateExpression(
            "isinstance(datetime.utcnow() - datetime.utcnow(), timedelta)", {})
        self.assertEqual(result, True)
Selects the proper LockManager based on the current backend used by Celery.
dataset/ETHPy150Open ClusterHQ/eliot/eliot/tests/test_filter.py/EliotFilterTests.test_otherLocals--crossover with--dataset/ETHPy150Open Robpol86/Flask-Celery-Helper/flask_celery.py/_select_manager