Почему вы должны писать тесты? Версия ответа от Dave Cheney: | Протестировал

Почему вы должны писать тесты? Версия ответа от Dave Cheney:

- Even if you don't, someone will test your software
- The majority of testing should be performed by development teams
- Manual testing should not be the majority of your testing because manual testing is O(n)
- Tests are the critical component that ensure you can always ship your master branch
- Tests lock in behavior
- Tests give you confidence to change someone else's code