Intern. A next-generation code testing stack for JavaScript.

“Just make the Intern do the testing”

Intern is a complete test stack for JavaScript designed to help you write and run consistent, high-quality test cases for your JavaScript libraries and applications. It can be used to test any JavaScript code. Its functional testing capabilities can even be used to test non-JavaScript Web and mobile apps, if you really want.

Learn more about Intern at

  1. Install from npm

    cd /my/project/root
    npm install intern --save-dev
  2. Create a copy of the example configuration file in your package’s test directory and edit appropriately. See the configuration documentation for a list of all available options.

    mkdir tests ; cp node_modules/intern/tests/example.intern.js tests/intern.js
  3. Verify your configuration works by running the Node.js client and seeing that no errors are output.

    node_modules/.bin/intern-client config=tests/intern
  4. Start writing tests! See the writing tests documentation and the Intern tutorial to learn how.

If you need to support IE 6–8, there is also a version of Intern for legacy browsers.

Intern is available under the terms of the New BSD License. All code, with the exception of portions of the assert.js library and tests in the geezer branch, is developed under the terms of the Dojo Foundation CLA.

© 2012–2013 Colin Snover
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