class ConfigEventsTest

class ConfigEventsTest extends KernelTestBase {
  
  /**
   * Modules to enable.
   *
   * @var array
   */
  protected static $modules = [
    'config_events_test',
  ];
  
  /**
   * Tests configuration events.
   */
  public function testConfigEvents() {
    $name = 'config_events_test.test';
    $config = new Config($name, \Drupal::service('config.storage'), \Drupal::service('event_dispatcher'), \Drupal::service('config.typed'));
    $config->set('key', 'initial');
    $this->assertSame([], \Drupal::state()->get('config_events_test.event', []), 'No events fired by creating a new configuration object');
    $config->save();
    $event = \Drupal::state()->get('config_events_test.event', []);
    $this->assertSame(ConfigEvents::SAVE, $event['event_name']);
    $this->assertSame([
      'key' => 'initial',
    ], $event['current_config_data']);
    $this->assertSame([
      'key' => 'initial',
    ], $event['raw_config_data']);
    $this->assertSame([], $event['original_config_data']);
    $config->set('key', 'updated')
      ->save();
    $event = \Drupal::state()->get('config_events_test.event', []);
    $this->assertSame(ConfigEvents::SAVE, $event['event_name']);
    $this->assertSame([
      'key' => 'updated',
    ], $event['current_config_data']);
    $this->assertSame([
      'key' => 'updated',
    ], $event['raw_config_data']);
    $this->assertSame([
      'key' => 'initial',
    ], $event['original_config_data']);
    $config->delete();
    $event = \Drupal::state()->get('config_events_test.event', []);
    $this->assertSame(ConfigEvents::DELETE, $event['event_name']);
    $this->assertSame([], $event['current_config_data']);
    $this->assertSame([], $event['raw_config_data']);
    $this->assertSame([
      'key' => 'updated',
    ], $event['original_config_data']);
  }
  
  /**
   * Tests configuration rename event that is fired from the ConfigFactory.
   */
  public function testConfigRenameEvent() {
    $name = 'config_events_test.test';
    $new_name = 'config_events_test.test_rename';
    $GLOBALS['config'][$name] = [
      'key' => 'overridden',
    ];
    $GLOBALS['config'][$new_name] = [
      'key' => 'new overridden',
    ];
    $config = $this->config($name);
    $config->set('key', 'initial')
      ->save();
    $event = \Drupal::state()->get('config_events_test.event', []);
    $this->assertSame(ConfigEvents::SAVE, $event['event_name']);
    $this->assertSame([
      'key' => 'initial',
    ], $event['current_config_data']);
    // Override applies when getting runtime config.
    $this->assertEquals($GLOBALS['config'][$name], \Drupal::config($name)->get());
    \Drupal::configFactory()->rename($name, $new_name);
    $event = \Drupal::state()->get('config_events_test.event', []);
    $this->assertSame(ConfigEvents::RENAME, $event['event_name']);
    $this->assertSame([
      'key' => 'new overridden',
    ], $event['current_config_data']);
    $this->assertSame([
      'key' => 'initial',
    ], $event['raw_config_data']);
    $this->assertSame([
      'key' => 'new overridden',
    ], $event['original_config_data']);
  }

}