[refactor] Rewrite collect tests backbone
[refactor] Rewrite collect tests backbone

jvanmalder/ttn,mgranberry/ttn,LoRaWanSoFa/ttn,jvanmalder/ttn,TheThingsNetwork/ttn,LoRaWanSoFa/ttn,mgranberry/ttn,jvanmalder/ttn,mgranberry/ttn,TheThingsNetwork/ttn,TheThingsNetwork/ttn