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A comment on Show HN: I spent 3 years reverse-engineering a 40 yo stock market sim from 1986.

Re:Show HN: I spent 3 years reverse-engineering a 40 yo stoc... by tommica on Saturday February 14, 2026 @05:33AM (#47013411)
Really cool article! The solution to wrap the engine in a modern UI was a good one. I would have fallen to the trap of trying to port the whole thing, like all the other companies did.

Out of curiosity, how are the things tested? Or is checking core-engine doing things right only up to the developer and their tribal knowledge?

[ Parent | on HN ]
Re:Show HN: I spent 3 years reverse-engineering a 40 yo stoc... by benstopics on Saturday February 14, 2026 @05:36AM (#47013425)
Manual smoke testing and touching the original code as little as possible, for now. I am working on an automated testing solution although it will require a lot of backend changes in order to do create fixtures.
[ Parent | on HN ]