#testing

gengo is a zero-dependency Go library for generating random test data No configuration, no boilerplate. Just fast, reliable random data whenever you need it.

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

Participatory moderation: juries, evidence and appeals

The SauceLabs DesiredOption factory. Makes SauceLabs easy.

Provides an equality assertion for Behat TableNodes.

TypeScript SDK for orchestrating Agentic Systems — concurrency, structured output, cost control, and consensus as first-class primitives.

Check the code coverage using the clover report of PHPUnit.

Golang port of chaos-proxy

Environment builder and state manager for TYPO3 CMS

🔕 ActiveSupport Stream Silencing/Capturing - Without ActiveSupport

A mocking library based on the Compiler APIs (Roslyn + Mocks)

In-memory opfs (origin private file system) mock for Jest and Vitest.

Detects when some calls can be replaced by methods from the testing package

"Unit tests" for your agent skills

🏝 automated contract testing via type checking for Elixir functions and mocks

Rust library for realistic network simulation via Linux namespaces

A serializer and deserializer for JUnit reports, used by cargo-nextest

Validate your HttpFoundation requests and responses against OpenAPI (3+) definitions

Pest Browser Evals

Q4J — modular Java libraries for test automation and quality engineering

Headless Chrome/Chromium driver for Capybara

Add snapshot testing capabilities to Pest

Open-Source Visual Testing Platform

Modify your ENV

Test equality of unordered sequences

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A lib help you run test with condition

Open-source Vibe Testing suite: an MCP server for the coding agent you already run, a VS Code review cockpit, and CI. Your agent explores your app and crystallizes each flow into a plain @playwright/test spec you own — record == replay, runs in CI with zero AI.

Stateful local emulator of the Fly.io Machines API (flaps) — like LocalStack, for Fly Machines. Test Machines-API clients offline.