DeprecatedTemplateTest.php

<?php

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

use Drupal\Tests\BrowserTestBase;

/**
 * Tests that the deprecated template is correctly marked.
 *
 * @group Theme
 */
class DeprecatedTemplateTest extends BrowserTestBase {
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * Modules to install.
     *
     * @var array
     */
    protected static $modules = [
        'deprecated_twig_template',
    ];
    
    /**
     * Tests that the deprecated template is marked as deprecated.
     *
     * @group legacy
     */
    public function testDeprecatedTemplate() : void {
        $this->expectDeprecation('The "deprecated-template.html.twig" template is deprecated in drupal:X.0.0 and is removed from drupal:Y.0.0. Use another template instead. See https://www.example.com');
        $this->drupalGet('/deprecated-twig-template');
    }

}