ConfigFactory example

protected $cacheTagsInvalidator;

  /** * {@inheritdoc} */
  protected function setUp(): void {
    parent::setUp();

    $this->storage = $this->createMock('Drupal\Core\Config\StorageInterface');
    $this->eventDispatcher = $this->createMock('Symfony\Contracts\EventDispatcher\EventDispatcherInterface');
    $this->typedConfig = $this->createMock('\Drupal\Core\Config\TypedConfigManagerInterface');
    $this->configFactory = new ConfigFactory($this->storage, $this->eventDispatcher, $this->typedConfig);

    $this->cacheTagsInvalidator = $this->createMock('Drupal\Core\Cache\CacheTagsInvalidatorInterface');

    $container = new ContainerBuilder();
    $container->set('cache_tags.invalidator', $this->cacheTagsInvalidator);
    \Drupal::setContainer($container);
  }

  /** * @covers ::rename */