I think I am! Through convergent evolution at least - I hadn't found essays explicitly advocating it at the time. My use case was comparing results from chains

I think I am! Through convergent evolution at least - I hadn't found essays explicitly advocating it at the time. My use case was comparing results from chains of Spark RDD & Dataframe transformations, so having fairly large realistc input/output datasets was part of the game, and the main reason that manually writing all expected results wasn't feasible.