class UpdatePathTestBase

abstract class UpdatePathTestBase extends BrowserTestBase {
    use UpdatePathTestTrait {
        runUpdates as doRunUpdates;
    }
    
    /**
     * Modules to install after the database is loaded.
     */
    protected static $modules = [];
    
    /**
     * The file path(s) to the dumped database(s) to load into the child site.
     *
     * The file system/tests/fixtures/update/drupal-9.4.0.bare.standard.php.gz is
     * normally included first -- this sets up the base database from a bare
     * standard Drupal installation.
     *
     * The file system/tests/fixtures/update/drupal-9.4.0.filled.standard.php.gz
     * can also be used in case we want to test with a database filled with
     * content, and with all core modules enabled.
     *
     * @var array
     */
    protected $databaseDumpFiles = [];
    
    /**
     * The update URL.
     *
     * @var string
     */
    protected $updateUrl;
    
    /**
     * Disable strict config schema checking.
     *
     * The schema is verified at the end of running the update.
     *
     * @var bool
     */
    protected $strictConfigSchema = FALSE;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        if (!extension_loaded('zlib')) {
            $this->markTestSkipped('The zlib extension is not available.');
        }
        parent::setUp();
    }
    
    /**
     * Overrides BrowserTestBase::installDrupal() for update testing.
     *
     * The main difference in this method is that rather than performing the
     * installation via the installer, a database is loaded. Additional work is
     * then needed to set various things such as the config directories and the
     * container that would normally be done via the installer.
     */
    public function installDrupal() {
        // Set the update URL. This must be set here rather than in
        // self::__construct() or the old URL generator will leak additional test
        // sites. Additionally, we need to prevent the path alias processor from
        // running because we might not have a working alias system before running
        // the updates.
        $this->updateUrl = Url::fromRoute('system.db_update', [], [
            'path_processing' => FALSE,
        ]);
        $this->initUserSession();
        $this->prepareSettings();
        $this->doInstall();
        $this->initSettings();
        $request = Request::createFromGlobals();
        $container = $this->initKernel($request);
        $this->initConfig($container);
        // Add the config directories to settings.php.
        $sync_directory = Settings::get('config_sync_directory');
        \Drupal::service('file_system')->prepareDirectory($sync_directory, FileSystemInterface::CREATE_DIRECTORY | FileSystemInterface::MODIFY_PERMISSIONS);
        // Ensure the default temp directory exist and is writable. The configured
        // temp directory may be removed during update.
        \Drupal::service('file_system')->prepareDirectory($this->tempFilesDirectory, FileSystemInterface::CREATE_DIRECTORY | FileSystemInterface::MODIFY_PERMISSIONS);
        // Set the container. parent::rebuildAll() would normally do this, but this
        // not safe to do here, because the database has not been updated yet.
        $this->container = \Drupal::getContainer();
        $this->replaceUser1();
        require_once $this->root . '/core/includes/update.inc';
    }
    
    /**
     * {@inheritdoc}
     */
    protected function doInstall() {
        $this->runDbTasks();
        // Allow classes to set database dump files.
        $this->setDatabaseDumpFiles();
        // Load the database(s).
        foreach ($this->databaseDumpFiles as $file) {
            if (str_ends_with($file, '.gz')) {
                $file = "compress.zlib://{$file}";
            }
            require $file;
        }
    }
    
    /**
     * {@inheritdoc}
     */
    protected function initFrontPage() {
        // Do nothing as Drupal is not installed yet.
    }
    
    /**
     * Set database dump files to be used.
     */
    protected abstract function setDatabaseDumpFiles();
    
    /**
     * Add settings that are missed since the installer isn't run.
     */
    protected function prepareSettings() {
        parent::prepareSettings();
        // Generate a hash salt.
        $settings['settings']['hash_salt'] = (object) [
            'value' => Crypt::randomBytesBase64(55),
            'required' => TRUE,
        ];
        // Since the installer isn't run, add the database settings here too.
        $settings['databases']['default'] = (object) [
            'value' => Database::getConnectionInfo(),
            'required' => TRUE,
        ];
        // Force every update hook to only run one entity per batch.
        $settings['settings']['entity_update_batch_size'] = (object) [
            'value' => 1,
            'required' => TRUE,
        ];
        // Set up sync directory.
        $settings['settings']['config_sync_directory'] = (object) [
            'value' => $this->publicFilesDirectory . '/config_sync',
            'required' => TRUE,
        ];
        $this->writeSettings($settings);
    }
    
    /**
     * Helper function to run pending database updates.
     */
    protected function runUpdates() {
        $this->doRunUpdates($this->updateUrl);
    }
    
    /**
     * Runs the install database tasks for the driver used by the test runner.
     */
    protected function runDbTasks() {
        // Create a minimal container so that t() works.
        // @see install_begin_request()
        $container = new ContainerBuilder();
        $container->setParameter('language.default_values', Language::$defaultValues);
        $container->register('language.default', 'Drupal\\Core\\Language\\LanguageDefault')
            ->addArgument('%language.default_values%');
        $container->register('string_translation', 'Drupal\\Core\\StringTranslation\\TranslationManager')
            ->addArgument(new Reference('language.default'));
        \Drupal::setContainer($container);
        // Run database tasks and check for errors.
        $installer_class = Database::getConnectionInfo()['default']['namespace'] . "\\Install\\Tasks";
        $errors = (new $installer_class())->runTasks();
        if (!empty($errors)) {
            $this->fail('Failed to run installer database tasks: ' . implode(', ', $errors));
        }
    }
    
    /**
     * Replace User 1 with the user created here.
     */
    protected function replaceUser1() {
        
        /** @var \Drupal\user\UserInterface $account */
        // @todo Saving the account before the update is problematic.
        //   https://www.drupal.org/node/2560237
        $account = User::load(1);
        $account->setPassword($this->rootUser->pass_raw);
        $account->setEmail($this->rootUser
            ->getEmail());
        $account->setUsername($this->rootUser
            ->getAccountName());
        $account->save();
    }
    
    /**
     * Tests that the database was properly loaded.
     */
    protected function testDatabaseLoaded() {
        // Set a value in the cache to prove caches are cleared.
        \Drupal::service('cache.default')->set(__CLASS__, 'Test');
        
        /** @var \Drupal\Core\Update\UpdateHookRegistry $update_registry */
        $update_registry = \Drupal::service('update.update_hook_registry');
        foreach ([
            'user' => 9301,
            'node' => 8700,
            'system' => 8901,
            'update_test_schema' => 8000,
        ] as $module => $schema) {
            $this->assertEquals($schema, $update_registry->getInstalledVersion($module), "Module {$module} schema is {$schema}");
        }
        // Ensure that all {router} entries can be unserialized. If they cannot be
        // unserialized a notice will be thrown by PHP.
        $result = \Drupal::database()->select('router', 'r')
            ->fields('r', [
            'name',
            'route',
        ])
            ->execute()
            ->fetchAllKeyed(0, 1);
        // For the purpose of fetching the notices and displaying more helpful error
        // messages, let's override the error handler temporarily.
        set_error_handler(function ($severity, $message, $filename, $lineno) {
            throw new \ErrorException($message, 0, $severity, $filename, $lineno);
        });
        foreach ($result as $route_name => $route) {
            try {
                unserialize($route);
            } catch (\Exception $e) {
                $this->fail(sprintf('Error "%s" while unserializing route %s', $e->getMessage(), Html::escape($route_name)));
            }
        }
        restore_error_handler();
        // Before accessing the site we need to run updates first or the site might
        // be broken.
        $this->runUpdates();
        $this->assertEquals('standard', \Drupal::config('core.extension')->get('profile'));
        $this->assertEquals('Site-Install', \Drupal::config('system.site')->get('name'));
        $this->drupalGet('<front>');
        $this->assertSession()
            ->pageTextContains('Site-Install');
        // Ensure that the database tasks have been run during set up. Neither MySQL
        // nor SQLite make changes that are testable.
        $database = $this->container
            ->get('database');
        if ($database->driver() == 'pgsql') {
            $this->assertEquals('on', $database->query("SHOW standard_conforming_strings")
                ->fetchField());
            $this->assertEquals('escape', $database->query("SHOW bytea_output")
                ->fetchField());
        }
        // Ensure the test runners cache has been cleared.
        $this->assertFalse(\Drupal::service('cache.default')->get(__CLASS__));
    }

}