ConfigTestValidationTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\config_test\Kernel;

use Drupal\KernelTests\Core\Config\ConfigEntityValidationTestBase;
use PHPUnit\Framework\Attributes\Group;
use PHPUnit\Framework\Attributes\RunTestsInSeparateProcesses;

/**
 * Tests validation of config_test entities.
 */
class ConfigTestValidationTest extends ConfigEntityValidationTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'config_test',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->installConfig('config_test');
    $this->entity = \Drupal::entityTypeManager()->getStorage('config_test')
      ->create([
      'id' => 'test',
      'label' => 'test',
    ]);
    $this->entity
      ->save();
  }

}