1000 Open source projects that are alternatives of or similar to mswjs.io

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

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Low-level HTTP/HTTPS/XHR/fetch request interception library.

Typescript transformer to unlock automatic mock creation for interfaces and classes

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

Wiremock UI - Tool for creating mock servers, proxies servers and proxies servers with the option to save the data traffic from an existing API or Site.

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

alternative spring mocking infrastructure

Working with mountebank api it's easy!

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Simplified requests calls mocking for pytest

A Go mocking framework.

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✨ Scenario-based HTTP mocking

A friendly substitute for .NET mocking libraries.

Mocking framework for Rust

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Provides fake data to your Android apps :)

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A library to aid unittesting code that uses Golang's Github SDK

Log, test, intercept and modify Apollo Client's operations

A mock server based in OpenAPI Specification

CNeptune improve productivity & efficiency by urbanize .net module with meta-code to lay foundation for frameworks

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

Seamless client side mocking

Efficient Mock Generator for Swift

Yeoman generator for building a fake backend by providing the content of JSON files or JavaScript objects through configurable routes.

Easily mock GraphQL queries in your Relay Modern / Apollo / any-other-GraphQL-client tests.

Boilerplate-free mocking framework for Swift!

Firebase mock library for writing unit tests

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).

Clojure/ClojureScript library for stubs, spies and mocks.

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

A mock library for Dart inspired by mockito

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

HTTP traffic mocking and testing made simple in Python

Axios adapter that allows to easily mock requests

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

Pester is the ubiquitous test and mock framework for PowerShell.

A Dart static code generator that produces matchers and builders from route uri patterns.

Tool for providing sample data for AEM applications in a simple and flexible way. Stubbing server on AEM, no separate needed.

Forked from Mockjs, Generate random data & Intercept ajax request. Support miniprogram.

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 simple example showing how to override the URLProtocol to return mock data on Alamofire responses. Helpful if you are looking for a simple way to mock an Alamofire response, with out any additional dependencies.

The most convenient tool to mock requests for axios, with built-in Chrome extension support.

🐵 HTTP mock server, useful to stub services and simulate dynamic API responses, leveraging ASP.NET Core features, built-in fake data generation and pure C# scripting

An Android library that provides the ability to mock your final classes on Android devices.

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Mocking library for TypeScript and JavaScript using Proxies!