DrupalFlushAllCachesInInstallerTest.php in Drupal 9        
                          
                  
                        
  
  
  
  
  
File
  core/tests/Drupal/FunctionalTests/Installer/DrupalFlushAllCachesInInstallerTest.php
  
    View source  
  <?php
namespace Drupal\FunctionalTests\Installer;
use Drupal\Core\Serialization\Yaml;
use Drupal\Tests\BrowserTestBase;
class DrupalFlushAllCachesInInstallerTest extends BrowserTestBase {
  
  protected $defaultTheme = 'stark';
  
  protected $profile = 'cache_flush_test';
  
  protected function prepareEnvironment() {
    parent::prepareEnvironment();
    $info = [
      'type' => 'profile',
      'core_version_requirement' => '*',
      'name' => 'Cache flush test',
      'install' => [
        'language',
      ],
    ];
    
    $path = $this->siteDirectory . '/profiles/cache_flush_test';
    mkdir($path, 0777, TRUE);
    file_put_contents("{$path}/cache_flush_test.info.yml", Yaml::encode($info));
    $php_code = <<<EOF
<?php
function cache_flush_test_install() {
  // Note it is bad practice to call this method during hook_install() as it
  // results in an additional expensive container rebuild.
  drupal_flush_all_caches();
  // Ensure services are available after calling drupal_flush_all_caches().
  \\Drupal::state()->set('cache_flush_test', \\Drupal::hasService('language_negotiator'));
}
EOF;
    file_put_contents("{$path}/cache_flush_test.install", $php_code);
  }
  
  public function testInstalled() {
    $this
      ->assertTrue(\Drupal::state()
      ->get('cache_flush_test'));
  }
}