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✅ Master Level
Contract Testing
Complete Beginner → Advanced Syllabus (Pin-to-Pin)
🟢 LEVEL 1 — Foundations
1. Introduction to Contract Testing
- What is contract testing
- Purpose: verify API contracts between services
- Consumer and provider perspective
- Preventing integration breakage
- Independent deployment enablement
2. Contract Basics
- Consumer expectations
- Provider capabilities
- Contract validation
- Contract registry
🟢 LEVEL 2 — Pact Framework
3. Growing Pacts
- Writing consumer tests
- Mock service setup
- Interaction definition
- Pact generation
4. Provider Verification
- Provider test setup
- Pact verification
- Provider fulfillment
- Verification results
🟡 LEVEL 3 — Request/Response Contracts
5. HTTP Contract Testing
- HTTP interactions
- Request expectations
- Response validation
- Status code contracts
6. Message Contracts
- Event-based contracts
- Message structure
- Publisher/consumer testing
- Async contract testing
🟡 LEVEL 4 — Contract Matchers
7. Flexible Matchers
- Type matchers
- Regex matchers
- Date/time matchers
- Custom matchers
8. Avoiding Over-Specification
- Brittle tests
- Flexible contracts
- Matching strategies
🟠 LEVEL 5 — Contract Registry
9. Pact Broker
- Pact broker setup
- Publishing pacts
- Retrieving pacts
- Can I deploy checks
10. Contract Management
- Version management
- Contract evolution
- Breaking change detection
- Deprecation handling
🟠 LEVEL 6 — Multi-Service Scenarios
11. Multiple Consumers
- Handling multiple clients
- Consumer variations
- Diverging contracts
- Provider flexibility
12. Dependency Chains
- Transitive dependencies
- Contract chains
- Deployment ordering
- Compatibility matrix
🔵 LEVEL 7 — CI/CD Integration
13. Pipeline Integration
- Contract testing in CI
- Contract verification gates
- Deployment prevention
- Can I deploy
14. Continuous Deployment
- Independent deployment
- Backward compatibility
- Feature toggles for contracts
- Safe deployments
🔴 LEVEL 8 — Advanced Scenarios
15. GraphQL Contracts
- Query contracts
- Mutation contracts
- Schema validation
- Field contracts
16. Async Messaging
- Message broker contracts
- Event schema contracts
- Topic subscriptions
🔴 LEVEL 9 — Governance & Culture
17. Contract Governance
- Contract standards
- Breaking change policy
- Deprecation timeline
- Version support
18. Team Adoption
- Contract-first design
- Team collaboration
- Training & adoption
- Tool integration
⭐ Senior Frontend Focus (Must Master)
- Frontend-API contract testing
- Component prop contracts
- API response contracts
- Error response contracts
- Pagination contract test
- Authentication token contracts
- Real-time WebSocket message contracts