async def METHOD_NAME(self):
    with async_mock.patch.object(
        RouteRecord, "retrieve_by_recipient_key", async_mock.CoroutineMock()
    ) as mock_retrieve:
        mock_retrieve.side_effect = StorageNotFoundError()
        with self.assertRaises(RouteNotFoundError) as context:
            await self.manager.get_recipient(TEST_ROUTE_VERKEY)
    assert "No route found" in str(context.exception)