The cost of writing tests should be lower than the cost of bugs.
테스트는 기본적으로 일반적인 루트가 메인이 아니어야 한다
기능 추가시 사례분류한 것 모든 사례 테스트가 작동해야
기능 변경, 제거, 추가시 모든 사례분류가 작동가능해야
Code Test Notion
Too much of a good thing: the trade-off we make with tests | nicole@web
I've worked places where we aspired to (but did not reach) 100% code coverage. We used tools like a code coverage ratchet to ensure that the test coverage always went up and never down. This had a few effects.