mocking

A toolkit with common assertions and mocks that plays nicely with the standard library

Most popular Mocking framework for unit tests written in Java

Seamless REST/GraphQL API mocking library for browser and Node.js.

Mockery is a simple yet flexible PHP mock object framework for use in unit testing with PHPUnit, PHPSpec or any other testing framework. Its core goal is to offer a test double framework with a succinct API capable of clearly defining all possible object operations and interactions using a human readable Domain Specific Language (DSL).

A tool for mocking HTTP services

Stub your network requests easily! Test your apps with fake network data and custom response time, response code and headers!

Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.

A mock code autogenerator for Golang

PowerMock is a Java framework that allows you to unit test code normally regarded as untestable.

Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations.

Axios adapter that allows to easily mock requests

Pester is the ubiquitous test and mock framework for PowerShell.

Automatically mock your HTTP interactions to simplify and speed up testing

Intercept HTTP requests at the Python socket level. Fakes the whole socket module

Lightweight service virtualization/API simulation tool for developers and testers

Mock, Test & Track HTTP Requests and Response for Microservices

A friendly substitute for .NET mocking libraries.

Over the wire test doubles

HTTP traffic mocking and testing made easy in Go ༼ʘ̚ل͜ʘ̚༽

Development tool to mock API endpoints quickly and easily (docker image available)