:white_check_mark: test(operators): add test for user-defined operators
:white_check_mark: test(operators): add test for user-defined operators

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