BDD Test Cases from User Stories: 5 Steps and 12 Scenarios - DEV Community

This page explains a 5-step BDD decomposition framework for converting user stories into concrete Given/When/Then test scenarios. User stories describe intent rather than comprehensive behavior specifications, leaving critical edge cases untested. The article demonstrates why directly extracting test cases from user story text is insufficient, using a coupon discount example. It highlights real-world scenarios like expired coupons, minimum order values, duplicate applications, and service unavailability that exist in production but aren't captured in user stories. The framework helps teams systematically identify all necessary test cases beyond happy path scenarios.