A toolkit with common assertions and mocks that plays nicely with the standard library
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The industry standard for API mocking in JavaScript.
Most popular Mocking framework for unit tests written in Java
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).
Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.
A tool for mocking HTTP services
A mock code autogenerator for Go
Stub your network requests easily! Test your apps with fake network data and custom response time, response code and headers!
Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations.
PowerMock is a Java framework that allows you to unit test code normally regarded as untestable.
Pester is the ubiquitous test and mock framework for PowerShell.
Automatically mock your HTTP interactions to simplify and speed up testing
A friendly substitute for .NET mocking libraries.
Lightweight service virtualization/ API simulation / API mocking tool for developers and testers
Interface mocking tool for go generate
The open source, cloud native tool for API Mocking and Testing. Microcks is a Cloud Native Computing Foundation incubating project 🚀
The easy mocking library for .NET
Testing layer for Microsoft's HttpClient library. Create canned responses using a fluent API.
Boilerplate-free mocking framework for Swift!
Swift HTTP Networking with stubbing and caching support
Embedded unit testing framework for Godot 4 supporting GDScript and C#. Features test-driven development, embedded test inspector, extensive assertions, mocking, scene testing.
Replace any .NET method (including static and non-virtual) with a delegate
Aioresponses is a helper for mock/fake web requests in python aiohttp package.
In-page HTTP controller for frontend development. Intercept, modify, and simulate API responses directly in the browser.