Microcks: API Mocking and Contract Testing
Shriira Press
Turn your API specs into instant mocks and contract tests. Mock and test REST, gRPC, GraphQL, SOAP, and event-driven APIs from OpenAPI, AsyncAPI, and Postman — spec-driven, no drift.
Welcome to Microcks: API Mocking and Contract Testing.
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.
This title is part of the ShriIra library and is free to read in full, right here — our small contribution to making world-class knowledge easy to reach.
A note on reading it: open the Contents menu at the top of the reader to jump between chapters, use the Aa menu to set a comfortable text size, theme (light, sepia, or night), and single- or two-page layout. Your place is saved automatically, so you can always pick up where you left off.
We hope it serves you well.
— Shriira Press