:white_check_mark: test(fn): add test for arity of function
:white_check_mark: test(fn): add test for arity of function

ASMlover/study,ASMlover/study,ASMlover/study,ASMlover/study,ASMlover/study,ASMlover/study,ASMlover/study,ASMlover/study,ASMlover/study