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Regression testing with the Command design pattern
Computational mechanics practitioners are not typically known for practising well-established software engineering techniques. That makes code developed by various research groups next to impossible to understand and modify. I still see requests on iMechanica on how to implement Drucker-Prager models when every freshman student probably has their own implementation. It is likely that the person who developed a particular code cannot themselves understand the code a few years after the relevant paper has been published.
My new blog post discusses a way of quickly developing regression tests that can be used to check whether a small change in the code breaks the calculation. Check it out at http://www.parresianz.com/c++/command-pattern/. This is one of the small steps along the way to make codes last longer than the three years a student needs to complete their PhD.
-- Biswajit
- Biswajit Banerjee's blog
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