should i "glass box" contrast leads *fewer* tests?


for example, i'm minute tests opposing csvreader. it's rudimentary category enumerates splits rows text. the wholly raison d'tre ignoring commas within quotes. it's reduction page.



by "black box" contrast class, i've checked things like




  • what record doesn't exist?

  • what i don't have assent file?

  • what record non-windows line-breaks?



but fact, things streamreader's business. category works but doing anything cases. essence, tests throwing errors thrown streamreader, contrast function burnished framework. feels lot work nothing.



i've seen associated questions








my doubt is, am i blank indicate "glass box" contrast i i know avoid kind work?



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