#testing

Manage & generate prefs.js files

Cognitive Browser: The browser automation that thinks. Constitutional safety • Persona UX testing • Natural language interface • Self-healing selectors • Built for AI agents

Method redefinition (monkey-patching) functionality for PHP.

Cross-platform multi-protocol mock server — HTTP, WebSocket, gRPC, GraphQL, TCP, Redis, SMTP, MQTT — with a web UI, scenario system, and fault injection.

pytest plugin for manipulating test data directories and files

A pytest plugin powered by VCR.py to record and replay HTTP traffic.

The Pest Drift Plugin

pytest plugin to randomise the order of tests with some control over the randomness

ESLint rules for the Node.js built-in test runner (`node:test`)

A Test Kitchen Driver for Vagrant

Portable open-source starter kit for AI-assisted QA workflows. Copy .qa-ai/ into any QA or automation repo, bootstrap agent commands, and guide Claude Code, OpenCode, Codex and other tools from PRD/requirements to Gherkin tests, TestRail planning, traceability, automation feasibility and PR-ready QA artifacts.

Fluent, fully-typed assertion library for Python: type-narrowing assertions, contract testing, composable matchers, and structural matching.

The autonomous SDLC for Claude Code that won't pass a gate on an unproven verdict.

Atomic Testing solves the difficulty of maintaining UI tests for third‑party UI components by providing a consistent, reusable approach that adapts across multiple testing environments

A mocking and stubbing library for Ruby

httpstub provides router ( http.Handler ), server ( *httptest.Server ) and client ( *http.Client ) for stubbing, for testing in Go.

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

Pest Arch Plugin

Beautiful and understandable static analysis tool for PHP

a plugin for py.test that changes the default look and feel of py.test (e.g. progressbar, show tests that fail instantly)

pytest for AI agents - Autonomous red-teaming, behavioral monitoring & security testing for LLM agents

Istanbul-compatible JavaScript/TypeScript coverage instrumentation using the Oxc AST

Tasty, versatile, nutritious; goes with many things in .net.

The Pest Livewire Plugin

Pest Mutate Plugin

Go testing utility library offering a modular builder framework to streamline test environment setup. It provides interfaces, ready-to-use structs, and patterns for creating reusable builders, fixtures, and mocks. Extensible and ideal for consistent, maintainable tests across repos.

Non-UI browser testing for JavaScript libraries from the command-line

Run locally, skip in pipelines.

A fundamental test that stores the TestHost and provides synthetic inversion of control

Provides utilities for PHPUnit, especially user deprecation notices management