#testing

A tool to automatically rerun PHPUnit tests when source code changes

A very performant virtual DOM implementation.

Coverage, security and code quality for coding agents

Useful collection of community contributed packages for Effection

Get a full fake REST API with zero coding in less than 30 seconds (seriously)

Async polyglot unit testing for Vert.x.

Random testing library for C#

C# support for the Facility API Framework.

🎥 Record and replay Laravel requests deterministically and generate tests from production traces.

Simplified, structured logging for modern .NET apps — overloads, conditionals, and performance built-in.

Automatic Bisection Firefox and SpiderMonkey Bugs

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📐 PHPUnit extension that measures the shape of your test suite

Mocking and spying in Ruby's MiniTest framework

jaunt, dont code.

Symfony bundle to isolate your app's doctrine database tests and improve the test performance

Rust toolkit for repeatable Internet Computer application testing with PocketIC.

simulates and mock media devices like webcams in web applications

A library for defining JavaScript objects for testing

Simulate network operating systems in a programmatic and easy way.

Cypress plugin to show your API information in the Cypress UI runner

Official Flakiness.io reporter for Jest

pytest plugin for manipulating test data directories and files

Python test runner built in Rust

A modern PHP test double library that puts developer experience first.

:heavy_check_mark: PHP Test Framework for Freedom, Truth, and Justice

Open-source voice agent engine in TypeScript — provider-neutral STT/LLM/TTS pipeline, telephony, barge-in; runs on Node & Cloudflare Workers

Playwright-style UI testing for Godot & Unity. One semantic automation layer for tests, CI, and AI coding agents via MCP.

pytest-mqtt supports testing systems based on MQTT.

Rust library for realistic network simulation via Linux namespaces