JavaScript testing that just works.

Luna is a simple, modern, opinionated testing framework for JavaScript that has no configuration.

Yes, you read that right. You can get started and have your first tests running in less than a minute.

Getting started

npm install luna-testing

Place this code in test/my-first-test.js

export function testThatLunaWorks(t) {
    const pizza = 'good';
    t.assert(pizza === 'good', 'Make sure that pizza is good!');
}

npx luna test/my-first-test.js

You can also access the executable at ./node_modules/.bin/luna

To see what happens if a test fails change pizza to be bad!

Supports ES6 modules out of the box and automatically bundles them
Runs tests in a browser by default
Allows test functions to be exported from anywhere in your codebase including source files
Supports concurrency to run test groups in parallel
Generates code coverage reports without having to install any other modules
Converts JSX code directly into React.createElement syntax
Uses a special assert function to provide meaningful errors when tests fail
Applies sourcemaps to error stack traces and code coverage reports automatically
Supports array and object comparisons automatically when using == and !=.
Uses Luna to test Luna (test inception!)

Check out the introductory blog post to learn about the inspiration behind Luna.