UpdateDescriptionTest.php

<?php

namespace Drupal\KernelTests\Core\Extension;

use Drupal\KernelTests\KernelTestBase;

/**
 * Tests for update descriptions.
 *
 * @group Core
 */
class UpdateDescriptionTest extends KernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'update_test_description',
    ];
    
    /**
     * Tests the list of pending database updates.
     *
     * @see update_get_update_list()
     */
    public function testUpdateGetUpdateList() {
        require_once $this->root . '/core/includes/update.inc';
        \Drupal::service('update.update_hook_registry')->setInstalledVersion('update_test_description', 8000);
        \Drupal::moduleHandler()->loadInclude('update_test_description', 'install');
        $updates = update_get_update_list();
        $expected = [
            'pending' => [
                8001 => '8001 - Update test of slash in description and/or.',
                8002 => '8002 - Update test with multiline description, the quick brown fox jumped over the lazy dog.',
            ],
            'start' => 8001,
        ];
        $this->assertEquals($expected, $updates['update_test_description']);
    }

}