#testing

Node.js "fs" and browser "File System API" adapters and in-memory implementations 👍

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

Mutation testing for JavaScript and friends

A command-line tool and Python library and Pytest plugin for automated testing of RESTful APIs, with a simple, concise and flexible YAML-based syntax

A library for integration-testing against docker containers from within Rust.

🐙 Simple and complete Angular testing utilities that encourage good testing practices

API to interact with the python pyproject.toml based projects

Use https://github.com/astral-sh/uv with tox

GUI Agent for E2E Testing

WireMock.Net is a flexible product for stubbing and mocking web HTTP responses using advanced request matching and response templating. Based on WireMock Java, but extended and different functionality. Full documentation can be found at https://wiremock.org/dotnet/.

Mock everything your AI app talks to — LLM APIs, MCP, A2A, AG-UI, vector DBs, search. One package, one port, zero dependencies.

Tool for static code analysis and formatting of Robot Framework language

Open evidence profile for MCP tool actions. Enforce configured tool-call policies and record decisions and observations in offline-verifiable bundles. Optional Linux kernel controls. No hosted backend required.

Stove: The easiest way of writing e2e/component tests for your back-end app (jvm, go, rust, node, etc) with Kotlin

Mutation testing system

Ridiculous speed. Readable code.

Automatically mock your HTTP interactions to simplify and speed up testing

.NET lib for Testcontainers that enables embedding Microcks into your unit tests with lightweight, throwaway instance thanks to containers.

Most popular Mocking framework for unit tests written in Java

Rust language bindings for Microsoft Playwright

Pester is the ubiquitous test and mock framework for PowerShell.

Providing a simple command line tool for puppet content creators, to enable simple and complex test deployments.

pytest plugin that allows to customize the test execution order

An official Qase MCP server

Concise UI Tests with Java!

📊 APIs for web automation, testing, and bypassing bot-detection.

Cargo subcommand to easily use LLVM source-based code coverage (-C instrument-coverage).

Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.

:chipmunk: Simple and complete Svelte DOM testing utilities that encourage good testing practices

TestNG testing framework