# Testing

## PHPUnit tests

We recommend the use of a pre-configured virtualized environment, like [Varying Vagrant Vagrants](https://github.com/Varying-Vagrant-Vagrants/VVV) (VVV), as it provides a consistent environment for developing, testing, troubleshooting and debugging your code. VVV includes WP-CLI and PHPUnit which make unit testing that much easier.

If you're using VVV you can skip step 1.

1. Install WP-CLI and PHPUnit 
2. Initialize the unit tests using WP-CLI.  In a terminal, navigate to the root of the WordPress instance and run `wp scaffold plugin-tests plugin-name` replacing plugin-name with the name of the plugin. So for the Widgets Bundle you would run `wp scaffold plugin-tests so-widgets-bundle`. 
3. Navigate to the root of the plugin directory. `cd wp-content/plugins/so-widgets-bundle`
4. Run `bash bin/install-wp-tests.sh wordpress_test db_user db_password localhost latest`, replacing `db_user` and `db_pass` with your database user's username and password and `localhost` with your database hostname. 
5. That's it! Now you can run PHPUnit and you should see the output of the unit tests.

## Selenium UI tests

1. Download and install Node.js and npm.
2. In a terminal, navigate to the root of the plugin directory and run `npm install`
3. Get some coffee while npm installs the required packages. 
4. That's it! Now you can run `npm test ./selenium-tests` and you should see a Chrome browser window open and the Selenium UI tests run.