class ConfigEntityNormalizeTest

class ConfigEntityNormalizeTest extends KernelTestBase {
  
  /**
   * Modules to install.
   *
   * @var array
   */
  protected static $modules = [
    'config_test',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->installConfig(static::$modules);
  }
  public function testNormalize() {
    $config_entity = \Drupal::entityTypeManager()->getStorage('config_test')
      ->create([
      'id' => 'system',
      'label' => 'foobar',
      'weight' => 1,
    ]);
    $config_entity->save();
    // Modify stored config entity, this is comparable with a schema change.
    $config = $this->config('config_test.dynamic.system');
    $data = [
      'label' => 'foobar',
      'additional_key' => TRUE,
    ] + $config->getRawData();
    $config->setData($data)
      ->save();
    $this->assertNotSame($config_entity->toArray(), $config->getRawData(), 'Stored config entity is not is equivalent to config schema.');
    $config_entity = \Drupal::entityTypeManager()->getStorage('config_test')
      ->load('system');
    $config_entity->save();
    $config = $this->config('config_test.dynamic.system');
    $this->assertSame($config_entity->toArray(), $config->getRawData(), 'Stored config entity is equivalent to config schema.');
  }

}