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.opencode/skills/web-testing/references/testing-pyramid-strategy.md

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+# Testing Strategy Models
+
+## Model Comparison
+
+| Model | Structure | Best For |
+|-------|-----------|----------|
+| Pyramid | Unit 70% > Integration 20% > E2E 10% | Monoliths, logic-heavy |
+| Trophy (Dodds) | Static > Integration (largest) > Unit > E2E | Modern SPAs |
+| Honeycomb (Spotify) | Contract-centric cells | Microservices |
+| Diamond | Balanced unit/integration | Domain services |
+
+## Testing Trophy (Recommended for SPAs)
+
+```
+         E2E (minimal)
+        /------------\
+       / Integration  \   <-- Largest portion
+      /----------------\
+     /   Unit Tests     \
+    /--------------------\
+   /   Static Analysis    \  <-- Foundation
+  /________________________\
+```
+
+**Philosophy:** "The more your tests resemble how software is used, the more confidence they give you." - Kent C. Dodds
+
+**Key Principles:**
+- Test behavior, not implementation
+- Minimize mocking
+- Prioritize integration tests
+- Use accessible queries (getByRole first)
+
+## Testing Honeycomb (Microservices)
+
+Contract testing at center, interconnected cells for:
+- Unit tests (implementation details)
+- Integration tests (service boundaries)
+- Contract tests (API agreements)
+- E2E tests (critical paths only)
+
+## Ratios by Context
+
+| Context | Unit | Integration | E2E |
+|---------|------|-------------|-----|
+| Classic Pyramid | 70% | 20% | 10% |
+| Testing Trophy | 30% | 50% | 10% |
+| API-heavy | 75% | 15% | 10% |
+| Microservices | 40% | 40% | 20% |
+
+## Priority Matrix
+
+| Priority | Category | Examples |
+|----------|----------|----------|
+| P0 | Core flows | Signup, login, checkout, payment |
+| P1 | Major features | Search, CRUD, navigation |
+| P2 | Secondary | Filters, sorting, pagination |
+| P3 | Edge cases | Empty states, max limits |
+
+## Coverage Targets
+
+| Area | Target |
+|------|--------|
+| Critical paths | 100% |
+| Core features | 80-90% |
+| Overall | 75-85% |
+
+**Note:** Coverage as diagnostic, not target. Focus on what's uncovered.
+
+## CI/CD Order
+
+```yaml
+- run: npm run lint          # Gate 0: Static analysis
+- run: npm run test:unit     # Gate 1: Fast fail
+- run: npm run test:integration # Gate 2
+- run: npm run test:e2e      # Gate 3: Pre-merge
+```