ViewsTemplateTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\views\Kernel;

use Drupal\Core\DependencyInjection\ContainerBuilder;
use Drupal\views\Views;

/**
 * Tests the template retrieval of views.
 *
 * @group views
 *
 * @see \Drupal\views_test_data\Plugin\views\style\StyleTemplateTest
 */
class ViewsTemplateTest extends ViewsKernelTestBase {
    
    /**
     * {@inheritdoc}
     */
    public static $testViews = [
        'test_page_display',
        'test_view_display_template',
    ];
    
    /**
     * {@inheritdoc}
     */
    public function register(ContainerBuilder $container) {
        parent::register($container);
        // Enable Twig debugging.
        $parameters = $container->getParameter('twig.config');
        $parameters['debug'] = TRUE;
        $container->setParameter('twig.config', $parameters);
    }
    
    /**
     * Tests render functionality.
     */
    public function testTemplate() : void {
        // Make sure that the rendering just calls the preprocess function once.
        $output = Views::getView('test_view_display_template')->preview();
        $renderer = $this->container
            ->get('renderer');
        // Check that the rendered output uses the correct template file.
        $this->assertStringContainsString('This module defines its own display template.', (string) $renderer->renderRoot($output));
    }
    
    /**
     * @covers views_theme_suggestions_container_alter
     * @throws \Exception
     */
    public function testThemeSuggestionsContainerAlter() : void {
        $build = [
            '#type' => 'view',
            '#name' => 'test_page_display',
            '#display_id' => 'default',
            '#arguments' => [],
        ];
        $output = $this->render($build);
        $extension = '.html.twig';
        $expected = '<!-- FILE NAME SUGGESTIONS:' . PHP_EOL . '   ▪️ container--more-link--test-page-display--default' . $extension . PHP_EOL . '   ▪️ container--more-link--default' . $extension . PHP_EOL . '   ▪️ container--more-link--test-page-display' . $extension . PHP_EOL . '   ▪️ container--more-link' . $extension . PHP_EOL . '   ✅ container' . $extension . PHP_EOL . '-->' . PHP_EOL;
        $this->assertStringContainsString($expected, $output, 'Views more link container suggestions found in Twig debug output');
    }

}