function TwigSettingsTest::testTwigCacheOverride

Ensures Twig template cache setting can be overridden.

File

core/modules/system/tests/src/Functional/Theme/TwigSettingsTest.php, line 82

Class

TwigSettingsTest

Tests overriding Twig engine settings via settings.php.

Namespace

Code

public function testTwigCacheOverride() : void {
  $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.
  $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.');
}