Coverage Lies
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The document discusses the concept of code coverage, emphasizing that it goes beyond mere metrics and involves understanding the quality of tests and the importance of mission-critical code. It warns against setting arbitrary coverage goals without a clear purpose and highlights the risks associated with varying types of code. Ultimately, it encourages a deeper analysis of coverage and its implications rather than a superficial focus on numbers.
Coverage Lies
- 2. @gil_zilberfel Why are we here? • The arms race for metrics
- 3. @gil_zilberfel What is coverage really? • Code line coverage • Not just tests! • Although it works better this way • Example
- 4. @gil_zilberfel Why is it like that? • Technology • History • The big lie
- 5. @gil_zilberfel All code is not created equal • Risky code • New code • Right code • Test quality • It’s distracting!
- 7. @gil_zilberfel Quick tip for managers • Setting just a coverage goal is dumb
- 8. @gil_zilberfel What is really important • Mission critical code • Bugs returning • Complex • Incremental coverage
- 9. @gil_zilberfel Summary • Don’t just look at the numbers • Understand what you want to achieve • Use it at your peril