given-when-then

Disciplined Agentic Engineering — a methodology kit for Claude Code: acceptance-test-first specs, explicit checkpoints, and autonomy you can actually leave running. The engineer, atdd and crap-analyzer plugins.

A developer-friendly and pragmatic BDD tool for JavaScript.

This workshop is designed to help you start or improve your TDD skills.

The less annoying BDD / Gherkin library for .NET

Like rspec-given, but for Jest (port of jasmine-given)

TestAsYouThink: executable guidelines for tests as first-class citizens

MustRD: Validate your SPARQL queries and transformations with precision and confidence, using BDD and Given-When-Then principles

rspec-given on mocha

.NET - Unit Testing

Rector extension that adds and enforces Arrange-Act-Assert (AAA / Given-When-Then) structure in PHPUnit tests.

Given-When Style Testing for Clojure

An extension for NUnit 3 to facilitate a clear separation between Given part and When, Then parts of a unit test. This helps achieve hierachical test suites without making Test classes nesting one another.

Specification by Example (BDD) for .NET — Given/When/Then specs with xUnit and NUnit, in the style of Machine.Specifications.

Given-When-Then helper for Jest.

Simple Java Rule Engine Library

Easily execute Camunda process scenarios and verify your expectations with Given/Then/When style tests.

Opinionated BDD for Vitest. Enforced Given/When/Then with levels, timeouts, and documentation-as-tests.

Enforce Acceptance Test Driven Development in Claude Code to write clear specs, generate tests, and maintain consistent AI-driven testing workflows.