Add unit tests to ensure all rulesets' beatmaps are added successfully.
Add unit tests to ensure all rulesets' beatmaps are added successfully.

ZLima12/osu,Nabile-Rahmani/osu,ppy/osu,NeoAdonis/osu,smoogipooo/osu,smoogipoo/osu,naoey/osu,naoey/osu,nyaamara/osu,peppy/osu,RedNesto/osu,peppy/osu,ZLima12/osu,naoey/osu,UselessToucan/osu,smoogipoo/osu,NeoAdonis/osu,ppy/osu,johnneijzen/osu,Frontear/osuKyzer,johnneijzen/osu,smoogipoo/osu,ppy/osu,EVAST9919/osu,tacchinotacchi/osu,Drezi126/osu,EVAST9919/osu,NeoAdonis/osu,2yangk23/osu,peppy/osu-new,osu-RP/osu-RP,Damnae/osu,DrabWeb/osu,2yangk23/osu,DrabWeb/osu,peppy/osu,UselessToucan/osu,UselessToucan/osu,DrabWeb/osu