Add funtional_test about 'comment'
Add funtional_test about 'comment'

darjeeling/k-board,guswnsxodlf/k-board,kboard/kboard,guswnsxodlf/k-board,kboard/kboard,cjh5414/kboard,cjh5414/kboard,hyesun03/k-board,hyesun03/k-board,cjh5414/kboard,guswnsxodlf/k-board,kboard/kboard,hyesun03/k-board