TwigSettingsTest.php

<?php

namespace Drupal\Tests\system\Functional\Theme;

use Drupal\Tests\BrowserTestBase;
use Drupal\Core\PhpStorage\PhpStorageFactory;

/**
 * Tests overriding Twig engine settings via settings.php.
 *
 * @group Theme
 */
class TwigSettingsTest extends BrowserTestBase {
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'theme_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * Ensures Twig template auto reload setting can be overridden.
     */
    public function testTwigAutoReloadOverride() {
        // Enable auto reload and rebuild the service container.
        $parameters = $this->container
            ->getParameter('twig.config');
        $parameters['auto_reload'] = TRUE;
        $this->setContainerParameter('twig.config', $parameters);
        $this->rebuildContainer();
        // Check isAutoReload() via the Twig service container.
        $this->assertTrue($this->container
            ->get('twig')
            ->isAutoReload(), 'Automatic reloading of Twig templates enabled.');
        // Disable auto reload and check the service container again.
        $parameters = $this->container
            ->getParameter('twig.config');
        $parameters['auto_reload'] = FALSE;
        $this->setContainerParameter('twig.config', $parameters);
        $this->rebuildContainer();
        $this->assertFalse($this->container
            ->get('twig')
            ->isAutoReload(), 'Automatic reloading of Twig templates disabled.');
    }
    
    /**
     * Ensures Twig engine debug setting can be overridden.
     */
    public function testTwigDebugOverride() {
        // Enable debug and rebuild the service container.
        $parameters = $this->container
            ->getParameter('twig.config');
        $parameters['debug'] = TRUE;
        $this->setContainerParameter('twig.config', $parameters);
        $this->rebuildContainer();
        // Check isDebug() via the Twig service container.
        $this->assertTrue($this->container
            ->get('twig')
            ->isDebug(), 'Twig debug enabled.');
        $this->assertTrue($this->container
            ->get('twig')
            ->isAutoReload(), 'Twig automatic reloading is enabled when debug is enabled.');
        // Override auto reload when debug is enabled.
        $parameters = $this->container
            ->getParameter('twig.config');
        $parameters['auto_reload'] = FALSE;
        $this->setContainerParameter('twig.config', $parameters);
        $this->rebuildContainer();
        $this->assertFalse($this->container
            ->get('twig')
            ->isAutoReload(), 'Twig automatic reloading can be disabled when debug is enabled.');
        // Disable debug and check the service container again.
        $parameters = $this->container
            ->getParameter('twig.config');
        $parameters['debug'] = FALSE;
        $this->setContainerParameter('twig.config', $parameters);
        $this->rebuildContainer();
        $this->assertFalse($this->container
            ->get('twig')
            ->isDebug(), 'Twig debug disabled.');
    }
    
    /**
     * Ensures Twig template cache setting can be overridden.
     */
    public function testTwigCacheOverride() {
        $extension = twig_extension();
        $theme_installer = $this->container
            ->get('theme_installer');
        $theme_installer->install([
            'test_theme',
        ]);
        $this->config('system.theme')
            ->set('default', 'test_theme')
            ->save();
        // The registry still works on theme globals, so set them here.
        \Drupal::theme()->setActiveTheme(\Drupal::service('theme.initialization')->getActiveThemeByName('test_theme'));
        // Reset the theme registry, so that the new theme is used.
        $this->container
            ->set('theme.registry', NULL);
        // Load array of Twig templates.
        // reset() is necessary to invalidate caches tagged with 'theme_registry'.
        $registry = $this->container
            ->get('theme.registry');
        $registry->reset();
        $templates = $registry->getRuntime();
        // Get the template filename and the cache filename for
        // theme_test.template_test.html.twig.
        $info = $templates->get('theme_test_template_test');
        $template_filename = $info['path'] . '/' . $info['template'] . $extension;
        $environment = $this->container
            ->get('twig');
        $cache = $environment->getCache();
        $class = $environment->getTemplateClass($template_filename);
        $cache_filename = $cache->generateKey($template_filename, $class);
        // Navigate to the page and make sure the template gets cached.
        $this->drupalGet('theme-test/template-test');
        $this->assertTrue(PhpStorageFactory::get('twig')->exists($cache_filename), 'Cached Twig template found.');
        // Disable the Twig cache and rebuild the service container.
        $parameters = $this->container
            ->getParameter('twig.config');
        $parameters['cache'] = FALSE;
        $this->setContainerParameter('twig.config', $parameters);
        $this->rebuildContainer();
        // This should return false after rebuilding the service container.
        $this->assertFalse($this->container
            ->get('twig')
            ->getCache(), 'Twig environment has caching disabled.');
    }
    
    /**
     * Tests twig inline templates with auto_reload.
     */
    public function testTwigInlineWithAutoReload() {
        $parameters = $this->container
            ->getParameter('twig.config');
        $parameters['auto_reload'] = TRUE;
        $parameters['debug'] = TRUE;
        $this->setContainerParameter('twig.config', $parameters);
        $this->rebuildContainer();
        $this->drupalGet('theme-test/inline-template-test');
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->drupalGet('theme-test/inline-template-test');
        $this->assertSession()
            ->statusCodeEquals(200);
    }

}