Testing Strategy — The Test Trophy

Overview

The Test Trophy (Kent C. Dodds) is a modern testing strategy that prioritizes integration tests over unit tests, reflecting how today's tooling has shifted the cost/confidence tradeoffs of each test category.

"Write tests. Not too many. Mostly integration." — Kent C. Dodds

The Test Trophy

                  ┌───────┐
                  │  E2E  │  Few, high-confidence, slow, expensive
                 ─┴───────┴─
               ┌─────────────┐
               │ Integration  │  Most tests here — best ROI
              ─┴─────────────┴─
            ┌───────────────────┐
            │       Unit        │  Isolated logic, fast, cheap
           ─┴───────────────────┴─