def test_detach_unknown_volume(self):
        blockdevice_id = self.unknown_blockdevice_id
        exception = self.assertRaises(
            UnknownVolume,
            self.api.detach_volume, blockdevice_id=blockdevice_id
        )
        self.assertEqual(exception.args, (blockdevice_id,))
This method is called when a RenderInfo request is returned from the
dataset/ETHPy150Open ClusterHQ/flocker/flocker/node/agents/testtools/_blockdevice.py/IBlockDeviceAPITestsMixin.test_detach_unknown_volume--crossover with--dataset/ETHPy150Open rwl/muntjac/muntjac/addon/csstools/render_info.py/ICallback.infoReceived