ModuleInstallBatchTest.php

<?php

declare (strict_types=1);
namespace Drupal\FunctionalTests\Core\Test;

use Drupal\entity_test\Entity\EntityTest;
use Drupal\Tests\BrowserTestBase;

/**
 * Tests batch operations during tests execution.
 *
 * This demonstrates that a batch will be successfully executed during module
 * installation when running tests.
 *
 * @group Test
 * @group FunctionalTestSetupTrait
 */
class ModuleInstallBatchTest extends BrowserTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'test_batch_test',
    'entity_test',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * Tests loading entities created in a batch in test_batch_test_install().
   */
  public function testLoadingEntitiesCreatedInBatch() : void {
    foreach ([
      1,
      2,
    ] as $id) {
      $this->assertNotNull(EntityTest::load($id), 'Successfully loaded entity ' . $id);
    }
  }

}