FunctionalTestSuite.php

<?php

namespace Drupal\Tests\TestSuites;

require_once __DIR__ . '/TestSuiteBase.php';

/**
 * Discovers tests for the functional test suite.
 */
class FunctionalTestSuite extends TestSuiteBase {
    
    /**
     * Factory method which loads up a suite with all functional tests.
     *
     * @return static
     *   The test suite.
     */
    public static function suite() {
        $root = dirname(__DIR__, 3);
        $suite = new static('functional');
        $suite->addTestsBySuiteNamespace($root, 'Functional');
        return $suite;
    }

}