Jest + CI Workshop (Graded)

Rules

• Do NOT modify files inside src/
• Write your tests inside tests/
• CI must be green for evaluation

Task

• Write Jest tests for: calculateFinalAmount(subtotal, coupon)
• no coupon case
• SAVE10 coupon
• FLAT50 boundary case
• invalid subtotal throws error
• case-insensitive coupon
• Add GitHub Actions CI to run npm test on push and PR

Run locally

npm install npm test