class NodePageVariableDeprecationTest

class NodePageVariableDeprecationTest extends NodeTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'test_theme';
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->drupalCreateContentType([
      'type' => 'test_page_variable',
    ]);
    EntityViewMode::create([
      'id' => 'node.test_page_variable',
      'targetEntityType' => 'node',
      'status' => TRUE,
      'enabled' => TRUE,
      'label' => 'Test page variable',
    ])->save();
  }
  
  /**
   * Tests that deprecations are thrown correctly for the page variable.
   */
  public function testPageVariableDeprecation() : void {
    // Create a dummy node to skip node--1.html.twig in test_theme.
    $this->drupalCreateNode();
    $node = $this->drupalCreateNode([
      'type' => 'test_page_variable',
    ]);
    $this->expectDeprecation("'page' is deprecated in drupal:11.3.0 and is removed in drupal:13.0.0. Use 'view_mode' instead. See https://www.drupal.org/node/3458593");
    $this->drupalGet($node->toUrl());
    $this->assertSession()
      ->pageTextContains('The page variable is set');
    $build = \Drupal::entityTypeManager()->getViewBuilder('node')
      ->view($node, 'test_page_variable');
    $output = (string) \Drupal::service('renderer')->renderRoot($build);
    $this->assertStringNotContainsString('The page variable is set', $output);
  }

}