ADR-006: Testing strategy

Date: 2026-04-28 Status: Accepted

Context

We need confidence without heavy test infrastructure, and we must remain compatible with a Cloudflare runtime.

Decision

• Use Vitest for unit and application tests now.
• Add runtime-aware integration testing for D1-bound flows later.
• Add Playwright for critical user journeys later.
• Require regression tests for bug fixes.

Consequences

• Most early testing focuses on domain and application boundaries.
• Infrastructure testing ramps up as D1 wiring lands.

Alternatives considered

• Only E2E tests (too slow and brittle early)
• Only unit tests (misses integration regressions later)