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ProcessEngineering4 min read
Documentation that gets read because it's tested
Documentation rots because nobody catches it rotting. Test your docs the same way you test your code — and they'll actually stay useful.
The biggest reason teams stop trusting their documentation isn't that it was bad when written. It's that nothing told anyone when it became wrong. Code that breaks gets caught by tests. Docs that lie get caught when someone tries to follow them.
What testable documentation looks like
- Code snippets that run as part of CI.
- Setup instructions verified by a fresh-machine onboarding test.
- Architectural diagrams generated from the code, not maintained by hand.
- Links checked by an automated job.
The cultural piece
Once docs are tested, fixing a broken doc becomes the same kind of work as fixing a broken test — small, visible, expected. The doc that nobody trusts becomes the doc everyone reads, because they know it works.
Untested documentation is just optimism with formatting.