def test_empty_value_to_string(self):
        self.assertEqual(value_to_string(None), mark_safe(render_to_string('elements/empty.html', {})))
See ``BlockDeviceAPI.list_volume``.
dataset/ETHPy150Open django-erp/django-erp/djangoerp/core/tests.py/RenderingValueToStringCase.test_empty_value_to_string--crossover with--dataset/ETHPy150Open ClusterHQ/flocker/flocker/node/agents/blockdevice.py/IBlockDeviceAsyncAPI.list_volumes