Test Strategy

Test Strategy

Design comprehensive test strategies that catch bugs early and scale with your product.

The Modern Test Pyramid

     E2E (5%)
    Integration (15%)
  Component/Contract (30%)
      Unit Tests (50%)

Layer Details

| Layer | Scope | Speed | Who Owns |

|-------|-------|-------|----------|

| Unit | Single function/class | ms | Developers |

| Component | UI component/module | ms-s | Developers |

| Contract | API boundaries | s | Dev + QA |

| Integration | Service interactions | s-min | QA |

| E2E | Full user flows | min | QA + DevOps |

Risk-Based Testing

• Identify risks for each feature (data loss, security, UX, performance)
• Score likelihood × impact
• Allocate test effort proportionally to risk score
• Reassess after each release

Coverage Goals

| Type | Target |

|------|--------|

| Line coverage | >80% |

| Branch coverage | >75% |

| Mutation score | >60% |

| Critical path E2E | 100% |

| API endpoint tested | >90% |

Test Planning Template

## Feature: [Name]
- Unit tests: [count] — [files/scope]
- Integration tests: [count] — [services involved]
- E2E tests: [count] — [critical paths]
- Edge cases: [list]
- Performance threshold: [metric]

CI Integration

• Unit/component tests on every PR (fail under 5 min)
• Integration suite on every merge to main
• E2E nightly or on demand
• Flaky test detection → auto-quarantine → alert