class EntityDisplayRepositoryTest

class EntityDisplayRepositoryTest extends KernelTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'user',
  ];
  
  /**
   * The entity display repository under test.
   *
   * @var \Drupal\Core\Entity\EntityDisplayRepositoryInterface
   */
  protected $displayRepository;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->displayRepository = \Drupal::service('entity_display.repository');
    // Create a new view mode for users.
    $this->container
      ->get('entity_type.manager')
      ->getStorage('entity_view_mode')
      ->create([
      'id' => 'user.pastafazoul',
      'label' => $this->randomMachineName(),
      'targetEntityType' => 'user',
    ])
      ->save();
    // Create a new form mode for users.
    $this->container
      ->get('entity_type.manager')
      ->getStorage('entity_form_mode')
      ->create([
      'id' => 'user.register',
      'label' => $this->randomMachineName(),
      'targetEntityType' => 'user',
    ])
      ->save();
  }
  
  /**
   * @covers ::getViewDisplay
   */
  public function testViewDisplay() {
    $display = $this->displayRepository
      ->getViewDisplay('user', 'user');
    $this->assertInstanceOf(EntityViewDisplayInterface::class, $display);
    $this->assertTrue($display->isNew(), 'Default view display was created on demand.');
    $this->assertSame(EntityDisplayRepositoryInterface::DEFAULT_DISPLAY_MODE, $display->getMode());
    $display->createCopy('pastafazoul')
      ->save();
    $display = $this->displayRepository
      ->getViewDisplay('user', 'user', 'pastafazoul');
    $this->assertInstanceOf(EntityViewDisplayInterface::class, $display);
    $this->assertFalse($display->isNew(), 'An existing view display was loaded.');
    $this->assertSame('pastafazoul', $display->getMode());
    $display = $this->displayRepository
      ->getViewDisplay('user', 'user', 'magic');
    $this->assertInstanceOf(EntityViewDisplayInterface::class, $display);
    $this->assertTrue($display->isNew(), 'A new non-default view display was created on demand.');
    $this->assertSame('magic', $display->getMode());
  }
  
  /**
   * @covers ::getFormDisplay
   */
  public function testFormDisplay() {
    $display = $this->displayRepository
      ->getFormDisplay('user', 'user');
    $this->assertInstanceOf(EntityFormDisplayInterface::class, $display);
    $this->assertTrue($display->isNew(), 'Default form display was created on demand.');
    $this->assertSame(EntityDisplayRepositoryInterface::DEFAULT_DISPLAY_MODE, $display->getMode());
    $display->createCopy('register')
      ->save();
    $display = $this->displayRepository
      ->getFormDisplay('user', 'user', 'register');
    $this->assertInstanceOf(EntityFormDisplayInterface::class, $display);
    $this->assertFalse($display->isNew(), 'An existing form display was loaded.');
    $this->assertSame('register', $display->getMode());
    $display = $this->displayRepository
      ->getFormDisplay('user', 'user', 'magic');
    $this->assertInstanceOf(EntityFormDisplayInterface::class, $display);
    $this->assertTrue($display->isNew(), 'A new non-default form display was created on demand.');
    $this->assertSame('magic', $display->getMode());
  }

}