12.05.07

Misleading Test Coverage Numbers

Posted in Programming at 8:39 pm

I’m always having to explain why line coverage is misleading. This is probably the best, most obvious example of why.

See, 100% coverage!

So let’s reformat some code, you know, just ‘cuz we prefer do … end rather than curly braces.

Oops.

Know what your tests do, people, don’t just look for the nifty green bar from rcov.

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