class ParagraphsEntityMethodsTest

class ParagraphsEntityMethodsTest extends KernelTestBase {
  use ParagraphsTestBaseTrait;

  /**
   * Modules to enable.
   *
   * @var string[]
   */
  protected static $modules = [
    'paragraphs',
    'node',
    'user',
    'system',
    'field',
    'entity_reference_revisions',
    'file',
  ];

  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this
      ->installEntitySchema('user');
    $this
      ->installEntitySchema('node');
    $this
      ->installEntitySchema('paragraph');
    $this
      ->installSchema('system', [
      'sequences',
    ]);
    $this
      ->installSchema('node', [
      'node_access',
    ]);
    \Drupal::moduleHandler()
      ->loadInclude('paragraphs', 'install');
  }

  /**
   * Tests the ::label() behavior on the paragraph entity.
   */
  public function testParagraphLabel() {
    $this
      ->addParagraphedContentType('paragraphed_test');
    $paragraph_type = 'text_paragraph';
    $this
      ->addParagraphsType($paragraph_type);
    $this
      ->addFieldtoParagraphType($paragraph_type, 'field_text', 'string');

    // Create a node with a paragraph.
    $paragraph = Paragraph::create([
      'type' => 'text_paragraph',
      'field_text' => 'Example text that is very long and needs to be shortened.',
    ]);
    $paragraph
      ->save();
    $node = Node::create([
      'title' => 'Test Node',
      'type' => 'paragraphed_test',
      'field_paragraphs' => [
        $paragraph,
      ],
    ]);
    $node
      ->save();
    $storage = \Drupal::entityTypeManager()
      ->getStorage('paragraph');

    // By this point the label should include the parent entity's label and the
    // field label.
    $paragraph = $storage
      ->loadUnchanged($paragraph
      ->id());
    $this
      ->assertEquals('Test Node > field_paragraphs', $paragraph
      ->label());

    // Create a new revision without the paragraph and verify the label on the
    // paragraph entity reflects that.

    /** @var \Drupal\node\NodeInterface $node */
    $node
      ->set('field_paragraphs', []);
    $node
      ->setNewRevision(TRUE);
    $node
      ->save();
    $paragraph = $storage
      ->loadUnchanged($paragraph
      ->id());
    $this
      ->assertEquals('Test Node > field_paragraphs (previous revision)', $paragraph
      ->label());

    // Delete the node and check if the label reflects that.
    $node
      ->delete();
    $paragraph = $storage
      ->loadUnchanged($paragraph
      ->id());
    $this
      ->assertEquals('Orphaned text_paragraph: Example text that is very long and needs to be sh…', $paragraph
      ->label());
    $paragraph3 = Paragraph::create([
      'type' => 'text_paragraph',
      'field_text' => 'Example text3',
    ]);
    $paragraph3
      ->save();
    $node3 = Node::create([
      'title' => 'Test Node 3',
      'type' => 'paragraphed_test',
      'field_paragraphs' => [
        $paragraph3,
      ],
    ]);
    $node3
      ->save();
    $paragraph3 = $storage
      ->loadUnchanged($paragraph3
      ->id());
    $this
      ->assertEquals('Test Node 3 > field_paragraphs', $paragraph3
      ->label());

    // If we delete the field on the node type, the paragraph becomes orphan.
    FieldStorageConfig::load('node.field_paragraphs')
      ->delete();
    \Drupal::service('entity.memory_cache')
      ->deleteAll();
    $paragraph3 = $storage
      ->loadUnchanged($paragraph3
      ->id());
    $this
      ->assertEquals('Orphaned text_paragraph: Example text3', $paragraph3
      ->label());
  }

}