KeyValueEntityStorage example

$this->moduleHandler = $this->createMock('Drupal\Core\Extension\ModuleHandlerInterface');
    $this->uuidService = $this->createMock('Drupal\Component\Uuid\UuidInterface');
    $this->languageManager = $this->createMock('Drupal\Core\Language\LanguageManagerInterface');
    $language = new Language(['langcode' => 'en']);
    $this->languageManager->expects($this->any())
      ->method('getDefaultLanguage')
      ->willReturn($language);
    $this->languageManager->expects($this->any())
      ->method('getCurrentLanguage')
      ->willReturn($language);

    $this->entityStorage = new KeyValueEntityStorage($this->entityType, $this->keyValueStore, $this->uuidService, $this->languageManager, new MemoryCache());
    $this->entityStorage->setModuleHandler($this->moduleHandler);

    $container = new ContainerBuilder();
    $container->set('entity_field.manager', $this->entityFieldManager);
    $container->set('entity_type.manager', $this->entityTypeManager);
    $container->set('language_manager', $this->languageManager);
    $container->set('cache_tags.invalidator', $this->cacheTagsInvalidator);
    \Drupal::setContainer($container);
  }

  /** * @covers ::create * @covers ::doCreate */