WPUnit Helpers

Composer plugin providing unified scripts for installing and running automated WP Unit Tests.

What is this?

This is a set of scripts that can be used in a WordPress plugin or theme repository to run automated tests using the WP Unit Test Framework built on top of PHPUnit. The Composer plugin will install these scripts into the dependent project's bin directory, allowing you to add helper scripts to your composer.json.

This package fundamentally differs from the traditional install-wp-tests.sh script that's existed in the WordPress community for many years by removing some of the idiosyncracies of that workflow and replacing them with a WP-CLI-based approach.

Requirements

Before using these scripts, you must have the following installed:

• Composer
• WP-CLI

Additionally, if you intend to run the tests in a CI environment, you will need to have some modern MySQL-compatible database server available (MariaDB, MySQL, etc).

What's included?

• install-wp-tests.sh - A standardized script for installing the WP Unit Test Framework.
• install-local-tests.sh - A helper script for installing WP Unit Tests locally. See Local Testing for more information.
• phpunit-test.sh - A helper script for running WP Unit Tests that is intended for use in CI.
• helpers.sh - A collection of helper functions used by the other scripts.

Installation

Use Composer to install this package as a development dependency:

composer require --dev pantheon-systems/wpunit-helpers

On installation, the Composer plugin will copy the scripts into the bin directory of the dependent project. You can then add the scripts to your composer.json:

{
	"scripts": {
		"phpunit": "phpunit --do-not-cache-result",
		"test": "@phpunit",
		"test:install": "bin/install-local-tests.sh --skip-db=true",
		"test:install:withdb": "bin/install-local-tests.sh"
	}
}

Local Testing

The install-local-tests.sh script is highly configurable to allow for a variety of local environment setups. Any parameter that could be passed into install-wp-tests.sh is set up as an optional flag in install-local-tests.sh. By default, the script with no flags will assume that a new database should be created as root with no password.

Flags

--skip-db

If set and true, this flag will skip the database creation step. This is useful if you are using a local database that is already set up. This replaces the (now deprecated) --no-db flag.

--dbname

This flag will set the name of the database to be created. The default value is wordpress_test.

--dbuser

This flag will set the username of the database user to be created. The default value is root.

--dbpass

This flag will set the password of the database user to be created. The default value is an empty string.

--dbhost

This flag will set the host of the database to be created. The default value is 127.0.0.1.

--wpversion

This flag will set the version of WordPress to be installed. The default value is latest. Using nightly here will use the latest nightly build of WordPress.

--tmpdir

This flag will set the temporary directory to be used for the WordPress installation. The default value is /tmp.