def get_one(self, obj_type, search_spec):
"""
Returns a single Python dict that matches the supplied search spec.
:param obj_type: A `procession.objects.Object` class.
:param search_spec: A `procession.search.SearchSpec`
:raises `procession.exc.NotFound` if no such object found in backend
storage.
"""
sess = self._get_session()
model = _get_db_model_from_obj_class(obj_type)
filters = search_spec.filters
db_model = api.get_one(sess, model, **filters)
return db_model.to_dict()
def test_not_found(self):
self.query.one.side_effect = sao_exc.NoResultFound
with testtools.ExpectedException(exc.NotFound):
api.get_one(self.sess, mock.sentinel.model, field=mock.sentinel.field)
self.sess.query.assert_called_once_with(mock.sentinel.model)
self.query.filter_by.assert_called_once_with(field=mock.sentinel.field)
def test_success(self):
res = api.get_one(self.sess, mock.sentinel.model, field=mock.sentinel.field)
self.sess.query.assert_called_once_with(mock.sentinel.model)
self.query.filter_by.assert_called_once_with(field=mock.sentinel.field)
self.assertEqual(self.query.one.return_value, res)