Simple installation instructions for PHPUnit for WordPress plugin.

wp-phpunit-instructions.md

SSH Commands

Run the following commands in order:

1. apt-get update
2. apt-get install curl
3. apt-get install subversion
4. wget -O phpunit https://phar.phpunit.de/phpunit-7.phar
5. chmod +x phpunit
6. mv phpunit /usr/local/bin/phpunit
7. curl -s https://getcomposer.org/installer | php
8. mv composer.phar /usr/local/bin/composer
9. cd /app/public
10. composer require --dev phpunit/phpunit ^7
11. wp scaffold plugin-test <plugin directory name>
12. cd wp-content/plugins/<plugin directory name>
13. bin/install-wp-tests.sh wordpress_test root 'root' localhost latest

Edit PHPUnit Config

Add name attribute on testsuite element in phpunit.xml.dist file:

<?xml version="1.0"?>
<phpunit
	bootstrap="tests/bootstrap.php"
	backupGlobals="false"
	colors="true"
	convertErrorsToExceptions="true"
	convertNoticesToExceptions="true"
	convertWarningsToExceptions="true"
>
	<testsuites>
		<testsuite name="<plugin directory name>">
			<directory prefix="test-" suffix=".php">./tests/</directory>
		</testsuite>
	</testsuites>
</phpunit>