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A comment on OOP Is Dead, Long Live OOP. Parent comment

Re:OOP Is Dead, Long Live OOP by humanrebar on Thursday October 18, 2018 @09:22PM (#18253668)
That's a solid plan for acceptance testing and a great way to make sure you can never test diagnostic, recovery, rollback, and other something-abnormal-happened-here logic.

For small programs with few interfaces to worry about, that might be fine, but as you number of users go up, the odds go up that you'll be ensuring rollback bits get flipped when filesystems fail. None of that is simple to test without some sort of dependency injection or other heavyweight design pattern.

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Re:OOP Is Dead, Long Live OOP by yen223 on Thursday October 18, 2018 @11:12PM (#18254004)
Why would you use mocks to test those things?
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Re:OOP Is Dead, Long Live OOP by humanrebar on Thursday October 18, 2018 @11:47PM (#18254112)
Because manually triggering an optimistic locking failure is a pain. Triggering one of those and a filesystem write failure at the same time is a whole pile of work compared to the mocking.
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