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You're never going to have 100% test coverage. Any complex system is going to have bugs. It's pretty much impossible to write even a small library without bugs,
by ig1 16y ago
You're never going to have 100% test coverage. Any complex system is going to have bugs. It's pretty much impossible to write even a small library without bugs, let alone huge websites with the complexity of Facebook or Google.
Look at cryptographic libraries. Often they've been gone over line-by-line by hundreds of experts in the field, have extensive testing both unit and field. Yet bugs still get found in them.
- arethuza 16y agoMy point isn't that bugs happen - of course they do and of course they get missed by tests. It is that if you pull someone out of bed to fix a problem I would suspect there is a high likelihood that you will be introducing more problems when you deploy this fix unless you run a full QA cycle after the change.