Issue #2871357 by alexpott, kriboogh: Installer tasks using multiple batch...

      if (isset($batches['operations'])) {

        $batches = [$batches];

      }

      foreach ($batches as $batch) {

        batch_set($batch);

      foreach ($batches as $batch_definition) {

        batch_set($batch_definition);

        // For interactive batches, we need to store the fact that this batch

        // task is currently running. Otherwise, we need to make sure the batch

        // will complete in one page request.

cache_strings: true

translate_english: false

javascript:

  directory: languages

translation:

  use_source: local

  default_filename: '%project-%version.%language.po'

  default_server_pattern: 'https://ftp.drupal.org/files/translations/%core/%project/%project-%version.%language.po'

  overwrite_customized: false

  overwrite_not_customized: true

  update_interval_days: 0

  path: ''

  import_enabled: true

hidden: true

install:

  - locale

  - locale_test_translate

  - tour

<?php

namespace Drupal\FunctionalTests\Installer;

use Drupal\Tests\BrowserTestBase;

/**

 * Tests translation files for multiple languages get imported during install.

 *

 * @group Installer

 */

class InstallerTranslationMultipleLanguageNonInteractiveTest extends BrowserTestBase {

  /**

   * {@inheritdoc}

   */

  protected $defaultTheme = 'stark';

  /**

   * Switch to the multilingual testing profile.

   *

   * @var string

   */

  protected $profile = 'testing_multilingual';

  /**

   * {@inheritdoc}

   */

  protected function prepareEnvironment() {

    parent::prepareEnvironment();

    // Place custom local translations in the translations directory.

    mkdir(DRUPAL_ROOT . '/' . $this->siteDirectory . '/files/translations', 0777, TRUE);

    file_put_contents(DRUPAL_ROOT . '/' . $this->siteDirectory . '/files/translations/drupal-8.0.0.de.po', $this->getPo('de'));

    file_put_contents(DRUPAL_ROOT . '/' . $this->siteDirectory . '/files/translations/drupal-8.0.0.es.po', $this->getPo('es'));

  }

  /**

   * Returns the string for the test .po file.

   *

   * @param string $langcode

   *   The language code.

   *

   * @return string

   *   Contents for the test .po file.

   */

  protected function getPo($langcode) {

    return <<<ENDPO

msgid ""

msgstr ""

msgid "Save and continue"

msgstr "Save and continue $langcode"

msgid "Anonymous"

msgstr "Anonymous $langcode"

msgid "Language"

msgstr "Language $langcode"

#: Testing site name configuration during the installer.

msgid "Drupal"

msgstr "Drupal"

ENDPO;

  }

  /**

   * {@inheritdoc}

   */

  protected function installParameters() {

    $params = parent::installParameters();

    $params['forms']['install_configure_form']['site_name'] = 'SITE_NAME_en';

    return $params;

  }

  /**

   * Tests that translations ended up at the expected places.

   */

  public function testTranslationsLoaded() {

    $this->drupalLogin($this->createUser([], NULL, TRUE));

    // Ensure the title is correct.

    $this->assertEquals('SITE_NAME_en', \Drupal::config('system.site')->get('name'));

    // Verify German and Spanish were configured.

    $this->drupalGet('admin/config/regional/language');

    $this->assertSession()->pageTextContains('German');

    $this->assertSession()->pageTextContains('Spanish');

    // If the installer was English or we used a profile that keeps English, we

    // expect that configured also. Otherwise English should not be configured

    // on the site.

    $this->assertSession()->pageTextContains('English');

    // Verify the strings from the translation files were imported.

    $this->verifyImportedStringsTranslated();

    /** @var \Drupal\language\ConfigurableLanguageManager $language_manager */

    $language_manager = \Drupal::languageManager();

    // If the site was installed in a foreign language (only tested with German

    // in subclasses), then the active configuration should be updated and no

    // override should exist in German. Otherwise the German translation should

    // end up in overrides the same way as Spanish (which is not used as a site

    // installation language). English should be available based on profile

    // information and should be possible to add if not yet added, making

    // English overrides available.

    $config = \Drupal::config('user.settings');

    $override_de = $language_manager->getLanguageConfigOverride('de', 'user.settings');

    $override_en = $language_manager->getLanguageConfigOverride('en', 'user.settings');

    $override_es = $language_manager->getLanguageConfigOverride('es', 'user.settings');

    // Active configuration should be English.

    $this->assertEquals('Anonymous', $config->get('anonymous'));

    $this->assertEquals('en', $config->get('langcode'));

    // There should not be an English override.

    $this->assertTrue($override_en->isNew());

    // German should be an override.

    $this->assertEquals('Anonymous de', $override_de->get('anonymous'));

    // Spanish is always an override (never used as installation language).

    $this->assertEquals('Anonymous es', $override_es->get('anonymous'));

    // Test translation from locale_test module.

    $this->assertEquals('Montag', t('Monday', [], ['langcode' => 'de']));

  }

  /**

   * Helper function to verify that the expected strings are translated.

   */

  protected function verifyImportedStringsTranslated() {

    $test_samples = ['Save and continue', 'Anonymous', 'Language'];

    $langcodes = ['de', 'es'];

    foreach ($test_samples as $sample) {

      foreach ($langcodes as $langcode) {

        $edit = [];

        $edit['langcode'] = $langcode;

        $edit['translation'] = 'translated';

        $edit['string'] = $sample;

        $this->drupalGet('admin/config/regional/translate');

        $this->submitForm($edit, 'Filter');

        $this->assertSession()->pageTextContains($sample . ' ' . $langcode);

      }

    }

  }

}