unit-test-wiremock-rest-api

Mock external REST APIs using WireMock, a library that stubs HTTP endpoints locally in your tests. Configure WireMock in JUnit 5, define stub responses, call your API client, and verify the requests—all without real network calls.

Yes. WireMock enables thorough request verification across headers, query parameters, and request bodies. After your code calls the mocked endpoint, assert that WireMock received the exact requests you expected.

WireMock lets you simulate failure conditions—timeouts, server errors, and other HTTP failures—without hitting real APIs. Stub these scenarios in your tests to verify your client handles errors correctly.

Yes. WireMock integrates as a dependency in both Maven and Gradle builds. Add it to your project configuration, and it runs as part of your test suite with dynamic port allocation for CI-friendly execution.

Unit test REST API clients in isolation by mocking external endpoints with WireMock. This approach eliminates network dependencies, speeds up tests, and makes them deterministic and safe to run anywhere.

No. WireMock stubs HTTP endpoints at the network level, so your API client code runs unchanged. Point your client to WireMock's local endpoint during tests, and it behaves as if calling a real API.