def test_exists(self):
        self.assertFalse(self.manager.filter(TestModel.a == 123).exists())
        self.assertTrue(self.manager.filter(TestModel.a == 1).exists())

        self.assertFalse(self.dict_manager.filter(TestModel.a == 123).exists())
        self.assertTrue(self.dict_manager.filter(TestModel.a == 1).exists())
dataset/ETHPy150Open EliotBerriot/lifter/tests/test_explicit_query_engine.py/TestQueries.test_exists/original