Top 158 mocking open source projects

Build a fake backend by providing the content of JSON files or JavaScript objects through configurable routes.

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

Provides fake data to your Android apps :)

Mock your datas for Okhttp and Retrofit in json format in just a few moves

Axios adapter that allows to easily mock requests

A strict, yet friendly mocking library for Rust 2018

Removes final keywords from source code on-the-fly and allows mocking of final methods and classes. It can be used together with any test tool such as PHPUnit or Mockery.

Pester is the ubiquitous test and mock framework for PowerShell.

Some examples on how to achieve the same goal with either of both libraries: sinon and jest. Also some of those goals achievable only by one of these tools.

A mock code autogenerator for Golang

The testing framework for Dynamics CRM and Dynamics 365 which runs on an In-Memory context and deals with mocks or fakes for you

a socket mock framework - for all kinds of socket animals, web-clients included

Typescript transformer to unlock automatic mock creation for interfaces and classes

Mocks, stubs, and spies for PHP.

HTTP mocking to test API services for chaos scenarios

A library for mocking django queryset functions in memory for testing

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

JavaScript Mocking Fundamentals on TestingJavaScript.com

Mock HTTPX with awesome request patterns and response side effects 🦋

Emulates ioredis by performing all operations in-memory.

Library for running Xamarin.Forms inside of unit tests

Mocking framework for Rust

A mock library for Dart inspired by mockito

Automatically mock your HTTP interactions to simplify and speed up testing

Examples of Mock Service Worker usage with various frameworks and libraries.

Most popular Mocking framework for unit tests written in Java

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

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

🐺 Easy, fast and type-safe dependency injection for Go.

HttpMocker is a simple HTTP mocking library written in Kotlin to quickly and easily handle offline modes in your apps

Castle Mock is a web application that provides the functionality to mock out RESTful APIs and SOAP web services.

Lightweight service virtualization/API simulation tool for developers and testers

Mock, Test & Track HTTP Requests and Response for Microservices

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

Easily mock full ohai data

Clojure/ClojureScript library for stubs, spies and mocks.

Java binding for Hoverfly

Over the wire test doubles

Mocking and forking Datomic Peer connections in-memory.

A friendly substitute for .NET mocking libraries.

Mock facility for Spring Data repositories

A progressive test framework for C.

✨ Scenario-based HTTP mocking

Node require wrapper with options for cache busting, pre- and post-processing

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).

Prig is a lightweight framework for test indirections in .NET Framework.

Curated list of popular Java and Kotlin frameworks, libraries and tools related to software testing, quality assurance and adjacent processes automation.

Advanced unit test framework for D

Swift Mocking Library

🕋 Mocking Redis in unit tests in Go.

Boilerplate-free mocking framework for Swift!

Lock-free framework for loggers, tracers, and mockers in multithreaded C++ programs.

A network mocking layer for iOS, tvOS, and macOS

Easy HTTP Networking in Swift a NSURLSession wrapper with image caching support

Mockito add-ons leveraging Java 8 and lambda expressions to make mocking even more compact

An unofficial UI for WireMock

A minimal test double library for TDD with JavaScript

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

The easy mocking library for .NET

Record HTTP calls and replay them