[archivant] added tests for update_volume
[archivant] added tests for update_volume

leophys/libreant,ael-code/libreant,insomnia-lab/libreant,insomnia-lab/libreant,leophys/libreant,ael-code/libreant,ael-code/libreant,leophys/libreant,ael-code/libreant,leophys/libreant,insomnia-lab/libreant,insomnia-lab/libreant