Regression Test That Would Have Caught It, If Anyone Had Written It
This story is from 2026-09-23. It is preserved in the archive; the latest stories are on the live feed.
We fixed a discount-stacking bug once - a promo code and a loyalty discount were combining in a way finance definitely hadn't approved - shipped the fix, closed the ticket, moved on to the next sprint. Eleven months later, a refactor of the pricing service reintroduced the exact same bug. Same root…
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- 2026-09-23 13:45 · DEV Community — AI
Regression Test That Would Have Caught It, If Anyone Had Written It