in reply to [solved] Test module to compare results between different runs (save/load)

This process is well known under the name "Regression Testing". See Test::Regression for a Perl implementation.

($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
}map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,

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Re^2: Test module to compare results between different runs (save/load)
by Dallaylaen (Chaplain) on Oct 03, 2018 at 13:28 UTC

    Thanks!

    (Although I thought regression testing is a more general concept, just "find out if we broke something")

[reply]
      ... I thought regression testing is a more general concept, just "find out if we broke something" ...

      It is (see Regression testing). (I like the word "just" in that quote.) In the most common notion of regression testing, you attempt to define all critical inputs and their correct outputs, a test set that can grow very large. (Can we call this "absolute" regression testing?)

      In the process you describe in the OP, you "just" take some input data set, run it through a process, and whatever the heck the output is, that's the correct output; if the next run has a different output, something broke. (Perhaps we can call this "differential" regression testing.)

      Give a man a fish:  <%-{-{-{-<

[reply]
[d/l]
        Absolutely.
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