class NodeAccessFieldTest

class NodeAccessFieldTest extends NodeTestBase {
  
  /**
   * Modules to enable.
   *
   * @var array
   */
  protected static $modules = [
    'node_access_test',
    'field_ui',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * A user with permission to bypass access content.
   *
   * @var \Drupal\user\UserInterface
   */
  protected $adminUser;
  
  /**
   * A user with permission to manage content types and fields.
   *
   * @var \Drupal\user\UserInterface
   */
  protected $contentAdminUser;
  
  /**
   * The name of the created field.
   *
   * @var string
   */
  protected $fieldName;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    node_access_rebuild();
    // Create some users.
    $this->adminUser = $this->drupalCreateUser([
      'access content',
      'bypass node access',
    ]);
    $this->contentAdminUser = $this->drupalCreateUser([
      'access content',
      'administer content types',
      'administer node fields',
    ]);
    // Add a custom field to the page content type.
    $this->fieldName = mb_strtolower($this->randomMachineName() . '_field_name');
    FieldStorageConfig::create([
      'field_name' => $this->fieldName,
      'entity_type' => 'node',
      'type' => 'text',
    ])
      ->save();
    FieldConfig::create([
      'field_name' => $this->fieldName,
      'entity_type' => 'node',
      'bundle' => 'page',
    ])
      ->save();
    /** @var \Drupal\Core\Entity\EntityDisplayRepositoryInterface $display_repository */
    $display_repository = \Drupal::service('entity_display.repository');
    $display_repository->getViewDisplay('node', 'page')
      ->setComponent($this->fieldName)
      ->save();
    $display_repository->getFormDisplay('node', 'page')
      ->setComponent($this->fieldName)
      ->save();
  }
  
  /**
   * Tests administering fields when node access is restricted.
   */
  public function testNodeAccessAdministerField() {
    // Create a page node.
    $fieldData = [];
    $value = $fieldData[0]['value'] = $this->randomMachineName();
    $node = $this->drupalCreateNode([
      $this->fieldName => $fieldData,
    ]);
    // Log in as the administrator and confirm that the field value is present.
    $this->drupalLogin($this->adminUser);
    $this->drupalGet('node/' . $node->id());
    $this->assertSession()
      ->pageTextContains($value);
    // Log in as the content admin and try to view the node.
    $this->drupalLogin($this->contentAdminUser);
    $this->drupalGet('node/' . $node->id());
    $this->assertSession()
      ->pageTextContains('Access denied');
    // Modify the field default as the content admin.
    $edit = [];
    $default = 'Sometimes words have two meanings';
    $edit["default_value_input[{$this->fieldName}][0][value]"] = $default;
    $this->drupalGet("admin/structure/types/manage/page/fields/node.page.{$this->fieldName}");
    $this->submitForm($edit, 'Save settings');
    // Log in as the administrator.
    $this->drupalLogin($this->adminUser);
    // Confirm that the existing node still has the correct field value.
    $this->drupalGet('node/' . $node->id());
    $this->assertSession()
      ->pageTextContains($value);
    // Confirm that the new default value appears when creating a new node.
    $this->drupalGet('node/add/page');
    $this->assertSession()
      ->responseContains($default);
  }

}