def test_devicerole(self):
        device_roles = DeviceRole.objects.all()[:2]
        params = {'role_id': [device_roles[0].pk, device_roles[1].pk]}
        self.assertEqual(self.filterset(params, self.queryset).qs.count(), 2)
        params = {'role': [device_roles[0].slug, device_roles[1].slug]}
        self.assertEqual(self.filterset(params, self.queryset).qs.count(), 2)