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Discussion on: Do you aim for 80% code coverage? Let me guess which 80% you choose...

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Rolf Streefkerk

Probably the thing to note here is, what kind of environment this software is running in? If it's medical software where correctness is paramount, I understand 100% code coverage is a must.

In regular web applications, I believe it's mostly wasted effort. You should aim to cover key area's of your application and not necessarily everything because it has a cost whenever changes have to be applied.