Testing your plugin
Testing your plugin locally
Testing your plugin on your book before publishing it is possible using npm link.
In the plugin's folder, run:
$ npm link
Then in your book's folder:
$ npm link gitbook-plugin-<plugin's name>
Unit testing on Travis
gitbook-tester makes it easy to write Node.js/Mocha unit tests for your plugins. Using Travis.org, tests can be run on each commits/tags.