add contextTest to test usedFeatures count
add contextTest to test usedFeatures count

cgvarela/lightncandy,zordius/lightncandy,vein1992/lightncandy,jmgq/lightncandy,Corollarium/lightncandy,fadimko/lightncandy,Southparkfan/lightncandy,vein1992/lightncandy,fadimko/lightncandy,Corollarium/lightncandy,jmgq/lightncandy,zordius/lightncandy,cgvarela/lightncandy,Southparkfan/lightncandy