(test) Implemented basic testing using Arc and Mutex.
(test) Implemented basic testing using Arc and Mutex.

mzaccari/iron,Undeterminant/iron,lavriv92/iron,badboy/iron,green-panther/iron,graue/iron,ahwatts/iron,reem/iron,charsyam/iron,dryganets/iron,tempbottle/iron,markgeek/iron,lcqiang521/iron,dorfsmay/iron,ilkosta/iron,steveklabnik/iron,shaunstanislaus/iron,bvssvni/iron,youprofit/iron,mneumann/iron,beni55/iron,armed/iron,jlegendary/iron,leeric92/iron,shama/iron,albperezbermejo/iron,fenhl/iron,Jeff-xchn/iron,iron/iron