class ContentEntityNullStorageTest

class ContentEntityNullStorageTest extends KernelTestBase {
  
  /**
   * Modules to enable.
   *
   * @var array
   */
  protected static $modules = [
    'system',
    'contact',
    'user',
  ];
  
  /**
   * Tests using entity query with ContentEntityNullStorage.
   *
   * @see \Drupal\Core\Entity\Query\Null\Query
   */
  public function testEntityQuery() {
    $this->assertSame(0, \Drupal::entityQuery('contact_message')->accessCheck(FALSE)
      ->count()
      ->execute(), 'Counting a null storage returns 0.');
    $this->assertSame([], \Drupal::entityQuery('contact_message')->accessCheck(FALSE)
      ->execute(), 'Querying a null storage returns an empty array.');
    $this->assertSame([], \Drupal::entityQuery('contact_message')->accessCheck(FALSE)
      ->condition('contact_form', 'test')
      ->execute(), 'Querying a null storage returns an empty array and conditions are ignored.');
    $this->assertSame([], \Drupal::entityQueryAggregate('contact_message')->accessCheck(FALSE)
      ->aggregate('name', 'AVG')
      ->execute(), 'Aggregate querying a null storage returns an empty array');
  }
  
  /**
   * Tests deleting a contact form entity via a configuration import.
   *
   * @see \Drupal\Core\Entity\Event\BundleConfigImportValidate
   */
  public function testDeleteThroughImport() {
    $this->installConfig([
      'system',
    ]);
    $contact_form = ContactForm::create([
      'id' => 'test',
      'label' => 'Test contact form',
    ]);
    $contact_form->save();
    $this->copyConfig($this->container
      ->get('config.storage'), $this->container
      ->get('config.storage.sync'));
    // Set up the ConfigImporter object for testing.
    $storage_comparer = new StorageComparer($this->container
      ->get('config.storage.sync'), $this->container
      ->get('config.storage'));
    $config_importer = new ConfigImporter($storage_comparer->createChangelist(), $this->container
      ->get('event_dispatcher'), $this->container
      ->get('config.manager'), $this->container
      ->get('lock'), $this->container
      ->get('config.typed'), $this->container
      ->get('module_handler'), $this->container
      ->get('module_installer'), $this->container
      ->get('theme_handler'), $this->container
      ->get('string_translation'), $this->container
      ->get('extension.list.module'), $this->container
      ->get('extension.list.theme'));
    // Delete the contact message in sync.
    $sync = $this->container
      ->get('config.storage.sync');
    $sync->delete($contact_form->getConfigDependencyName());
    // Import.
    $config_importer->reset()
      ->import();
    $this->assertNull(ContactForm::load($contact_form->id()), 'The contact form has been deleted.');
  }

}