ConfigExportUITest.php

<?php

namespace Drupal\Tests\config\Functional;

use Drupal\Core\Archiver\Tar;
use Drupal\Core\File\FileSystemInterface;
use Drupal\Core\Serialization\Yaml;
use Drupal\Tests\BrowserTestBase;

/**
 * Tests the user interface for exporting configuration.
 *
 * @group config
 */
class ConfigExportUITest extends BrowserTestBase {
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'config',
        'config_test',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        // Set up an override.
        $settings['config']['system.maintenance']['message'] = (object) [
            'value' => 'Foo',
            'required' => TRUE,
        ];
        $this->writeSettings($settings);
        $this->drupalLogin($this->drupalCreateUser([
            'export configuration',
        ]));
    }
    
    /**
     * Tests export of configuration.
     */
    public function testExport() {
        // Verify the export page with export submit button is available.
        $this->drupalGet('admin/config/development/configuration/full/export');
        $this->assertSession()
            ->buttonExists('Export');
        // Submit the export form and verify response. This will create a file in
        // temporary directory with the default name config.tar.gz.
        $this->drupalGet('admin/config/development/configuration/full/export');
        $this->submitForm([], 'Export');
        $this->assertSession()
            ->statusCodeEquals(200);
        // Test if header contains file name with hostname and timestamp.
        $request = \Drupal::request();
        $hostname = str_replace('.', '-', $request->getHttpHost());
        $this->assertSession()
            ->responseHeaderMatches('content-disposition', '/attachment; filename="config-' . preg_quote($hostname) . '-\\d{4}-\\d{2}-\\d{2}-\\d{2}-\\d{2}\\.tar\\.gz"/');
        // Extract the archive and verify it's not empty.
        $file_system = \Drupal::service('file_system');
        assert($file_system instanceof FileSystemInterface);
        $temp_directory = $file_system->getTempDirectory();
        $file_path = $temp_directory . '/config.tar.gz';
        $archiver = new Tar($file_path);
        $archive_contents = $archiver->listContents();
        $this->assertNotEmpty($archive_contents, 'Downloaded archive file is not empty.');
        // Prepare the list of config files from active storage, see
        // \Drupal\config\Controller\ConfigController::downloadExport().
        $storage_active = $this->container
            ->get('config.storage');
        $config_files = [];
        foreach ($storage_active->listAll() as $config_name) {
            $config_files[] = $config_name . '.yml';
        }
        // Assert that the downloaded archive file contents are the same as the test
        // site active store.
        $this->assertSame($config_files, $archive_contents);
        // Ensure the test configuration override is in effect but was not exported.
        $this->assertSame('Foo', \Drupal::config('system.maintenance')->get('message'));
        $archiver->extract($temp_directory, [
            'system.maintenance.yml',
        ]);
        $file_contents = file_get_contents($temp_directory . '/' . 'system.maintenance.yml');
        $exported = Yaml::decode($file_contents);
        $this->assertNotSame('Foo', $exported['message']);
        // Check the single export form doesn't have "form-required" elements.
        $this->drupalGet('admin/config/development/configuration/single/export');
        $this->assertSession()
            ->responseNotContains('js-form-required form-required');
        // Ensure the temporary file is not available to users without the
        // permission.
        $this->drupalLogout();
        $this->drupalGet('system/temporary', [
            'query' => [
                'file' => 'config.tar.gz',
            ],
        ]);
        $this->assertSession()
            ->statusCodeEquals(403);
    }

}