ThemeProceduralTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\system\Functional\Theme;

use Drupal\node\Entity\Node;
use Drupal\node\Entity\NodeType;
use Drupal\Tests\BrowserTestBase;
use PHPUnit\Framework\Attributes\Group;
use PHPUnit\Framework\Attributes\RunTestsInSeparateProcesses;

/**
 * Tests low-level theme functions.
 */
class ThemeProceduralTest extends BrowserTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'node',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'procedural_hook_theme';
  
  /**
   * Ensures preprocess functions run from procedural implementations.
   */
  public function testPreprocess() : void {
    $node_article_type = NodeType::create([
      'type' => 'article',
      'name' => 'Article',
    ]);
    $node_article_type->save();
    $node_basic_type = NodeType::create([
      'type' => 'basic',
      'name' => 'Basic',
    ]);
    $node_basic_type->save();
    $node = Node::create([
      'title' => 'placeholder_title',
      'type' => 'article',
      'uid' => 1,
    ]);
    $node->save();
    $node = Node::create([
      'title' => 'placeholder_title',
      'type' => 'basic',
      'uid' => 1,
    ]);
    $node->save();
    $this->drupalGet('node/1');
    $items = $this->cssSelect('.title');
    $this->assertEquals('Procedural Article Node Preprocess', $items[0]->getText());
    $this->drupalGet('node/2');
    $items = $this->cssSelect('.title');
    $this->assertEquals('Procedural Node Preprocess', $items[0]->getText());
  }

}