Add a test for the fallback to the part file keys
Add a test for the fallback to the part file keys

jbicha/server,michaelletzgus/nextcloud-server,phil-davis/core,endsguy/server,lrytz/core,andreas-p/nextcloud-server,michaelletzgus/nextcloud-server,Ardinis/server,andreas-p/nextcloud-server,pollopolea/core,nextcloud/server,sharidas/core,michaelletzgus/nextcloud-server,pixelipo/server,pixelipo/server,Ardinis/server,lrytz/core,owncloud/core,sharidas/core,jbicha/server,bluelml/core,owncloud/core,pollopolea/core,bluelml/core,pollopolea/core,cernbox/core,xx621998xx/server,bluelml/core,cernbox/core,pollopolea/core,cernbox/core,bluelml/core,nextcloud/server,pixelipo/server,IljaN/core,jbicha/server,michaelletzgus/nextcloud-server,endsguy/server,sharidas/core,pmattern/server,pmattern/server,whitekiba/server,lrytz/core,IljaN/core,cernbox/core,nextcloud/server,Ardinis/server,pixelipo/server,xx621998xx/server,pixelipo/server,nextcloud/server,whitekiba/server,IljaN/core,lrytz/core,endsguy/server,Ardinis/server,cernbox/core,owncloud/core,whitekiba/server,pmattern/server,endsguy/server,whitekiba/server,pmattern/server,endsguy/server,owncloud/core,xx621998xx/server,IljaN/core,whitekiba/server,jbicha/server,IljaN/core,jbicha/server,andreas-p/nextcloud-server,pmattern/server,andreas-p/nextcloud-server,xx621998xx/server,sharidas/core,lrytz/core,Ardinis/server,andreas-p/nextcloud-server,bluelml/core,xx621998xx/server,owncloud/core,pollopolea/core,sharidas/core