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verket (34) [Avatar] Offline
the chapter "Avoid this: making up your own data" got me thinking...
What if we use the live data of our legacy system as examples of what works?
- write down what you think is the way it works
- run all the live data through your test scenario
- when tests fail, it means you forgot something, and you need to refine the examples

We could create living documentation for legacy systems this way, couldn't we?
(If we ever find someone that has nothing better to do, that is...)
gojko.adzic (18) [Avatar] Offline
Re: Use live data to create examples on legacy systems?
you can create regression tests, I doubt it would be good documentation. "try old data and see if it changes" is a common way of doing regression tests on legacy systems.