ConfigOverrider.php

<?php

declare (strict_types=1);
namespace Drupal\user_config_override_test;

use Drupal\Core\Config\StorableConfigBase;
use Drupal\Core\Cache\CacheableMetadata;
use Drupal\Core\Config\ConfigFactoryOverrideInterface;
use Drupal\Core\Config\StorageInterface;

/**
 * Tests overridden permissions.
 */
class ConfigOverrider implements ConfigFactoryOverrideInterface {
  
  /**
   * {@inheritdoc}
   */
  public function loadOverrides($names) : array {
    return [
      'user.role.anonymous' => [
        'permissions' => [
          9999 => 'access content',
        ],
      ],
    ];
  }
  
  /**
   * {@inheritdoc}
   */
  public function getCacheSuffix() : string {
    return 'user_config_override_test';
  }
  
  /**
   * {@inheritdoc}
   */
  public function getCacheableMetadata($name) : CacheableMetadata {
    return new CacheableMetadata();
  }
  
  /**
   * {@inheritdoc}
   */
  public function createConfigObject($name, $collection = StorageInterface::DEFAULT_COLLECTION) : StorableConfigBase|null {
    return NULL;
  }

}