app: add very basic testing framework
app: add very basic testing framework

nonas/debian-qa,vivekanand1101/debsources,matthieucan/debsources,matthieucan/debsources,sophiejjj/debsources,clemux/debsources,matthieucan/debsources,devoxel/debsources,oorestisime/debsources,Debian/debsources,clemux/debsources,vivekanand1101/debsources,Debian/debsources,matthieucan/debsources,sophiejjj/debsources,devoxel/debsources,oorestisime/debsources,sophiejjj/debsources,Debian/debsources,nonas/debian-qa,clemux/debsources,vivekanand1101/debsources,devoxel/debsources,sophiejjj/debsources,clemux/debsources,zacchiro/debsources,zacchiro/debsources,oorestisime/debsources,sophiejjj/debsources,matthieucan/debsources,nonas/debian-qa,devoxel/debsources,nonas/debian-qa,zacchiro/debsources,vivekanand1101/debsources,zacchiro/debsources,devoxel/debsources,clemux/debsources,vivekanand1101/debsources,zacchiro/debsources,Debian/debsources,Debian/debsources,oorestisime/debsources,oorestisime/debsources