class UserBatchActionTest

class UserBatchActionTest extends BrowserTestBase {
  
  /**
   * Modules to install.
   *
   * @var array
   */
  protected static $modules = [
    // @todo Remove this in https://www.drupal.org/node/3219959
'block',
    'user',
    'user_batch_action_test',
    'views',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * Tests user admin batch.
   */
  public function testUserAction() {
    $themes = [
      'stark',
      'olivero',
      'claro',
    ];
    $this->container
      ->get('theme_installer')
      ->install($themes);
    $this->drupalLogin($this->rootUser);
    foreach ($themes as $theme) {
      $this->config('system.theme')
        ->set('default', $theme)
        ->save();
      $this->drupalGet('admin/people');
      $edit = [
        'user_bulk_form[0]' => TRUE,
        'action' => 'user_batch_action_test_action',
      ];
      $this->submitForm($edit, 'Apply');
      $this->assertSession()
        ->pageTextContains('One item has been processed.');
      $this->assertSession()
        ->pageTextContains($theme . ' theme used');
    }
  }

}