WireMock.Net

Lightweight Http Mocking Server for .NET, inspired by WireMock.org (from the Java landscape).

HTTP response stubbing, matchable on URL/Path, headers, cookies and body content patterns
Library can be used in unit tests and integration tests
Runs as a standalone process, as windows service, as Azure/IIS or as docker
Configurable via a fluent C# .NET API, JSON files and JSON over HTTP
Record/playback of stubs (proxying)
Per-request conditional proxying
Stateful behaviour simulation
Response templating / transformation using Handlebars and extensions
Can be used locally or in CI/CD scenarios
Can be used for Aspire Distributed Application testing

A core feature of WireMock.Net is the ability to return predefined HTTP responses for requests matching criteria. See Stubbing.

WireMock.Net support advanced request-matching logic, see Request Matching.

The response which is returned WireMock.Net can be changed using templating. This is described here Response Templating.

The WireMock admin API provides functionality to define the mappings via a http interface see Admin API Reference.

WireMock.Net can be used in several ways:

You can use your favorite test framework and use WireMock within your tests, see UnitTesting.

See WireMock.Net.Testcontainers on how to build a WireMock.Net Docker container which can be used in Unit/Integration testing.

sheyenrath/WireMock.Net.xUnit.v3v1.25.0