PhpUnitAutoloaderTest.php

<?php

namespace Drupal\Tests\Core\Test;

use Drupal\Tests\UnitTestCase;

/**
 * Tests that classes are correctly loaded during PHPUnit initialization.
 *
 * @group Test
 */
class PhpUnitAutoloaderTest extends UnitTestCase {
    
    /**
     * Test loading of classes provided by test sub modules.
     */
    public function testPhpUnitTestClassesLoading() {
        $this->assertTrue(class_exists('\\Drupal\\phpunit_test\\PhpUnitTestDummyClass'), 'Class provided by test module was not autoloaded.');
    }

}