def test_all(self):
        session = self.session()
        qs = session.query(self.model)
        c = yield qs.count()
        self.assertTrue(c is not 0)
        q1 = yield qs.all()
        self.assertEqual(len(q1), qs.count())
dataset/ETHPy150Open lsbardel/python-stdnet/tests/all/query/slice.py/TestFilter.test_all/operator `>` -> `is not`