Technology · Ebook

Microcks: API Mocking and Contract Testing

by Shriira Press

Microcks is the CNCF open-source platform for API mocking and contract testing — it turns your API artifacts (OpenAPI, AsyncAPI, Postman, gRPC, SOAP) into live, realistic mocks so you can develop against simulated APIs, and runs conformance tests to verify your real APIs match their specs. This free book teaches it from the ground up: the API mocking and testing problem and what Microcks is, the concepts (mocking, contract testing, API-first), Microcks's architecture (core, MongoDB, async-minion, test runners), API artifacts and the central role of examples, mocking REST APIs (OpenAPI to instant mock, dispatching, dynamic responses), contract testing (replaying examples against real APIs, catching drift), multi-protocol support (gRPC, GraphQL, SOAP — one tool for the whole API landscape), event-driven/async APIs (AsyncAPI and the async-minion — Microcks's distinctive strength), CI/CD integration (the CLI, keeping mocks current, pipeline contract testing, the developer workflow), and using Microcks in practice. Ten focused chapters with clear diagrams that make the API spec the contract — simulated for consumers and verified for providers, across every API kind, spec-driven and drift-free.

Contents

1. 1Preface
2. 2Chapter 1 — What Microcks Is
3. 3Chapter 2 — Mocking and Contract Testing
4. 4Chapter 3 — Microcks Architecture
5. 5Chapter 4 — API Artifacts
6. 6Chapter 5 — Mocking REST APIs
7. 7Chapter 6 — Contract Testing
8. 8Chapter 7 — Multi-Protocol Support
9. 9Chapter 8 — Event-Driven and Async APIs
10. 10Chapter 9 — CI/CD Integration
11. 11Chapter 10 — Microcks in Practice