DatabaseTestBase.php

<?php

namespace Drupal\Tests\system\Functional\Database;

use Drupal\Core\Database\Database;
use Drupal\KernelTests\Core\Database\DatabaseTestSchemaDataTrait;
use Drupal\Tests\BrowserTestBase;

/**
 * Base class for databases database tests.
 */
abstract class DatabaseTestBase extends BrowserTestBase {
    use DatabaseTestSchemaDataTrait;
    
    /**
     * The database connection for testing.
     */
    protected $connection;
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'database_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() {
        parent::setUp();
        $this->connection = Database::getConnection();
        $this->addSampleData();
    }

}