ToolbarTestSetup.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\toolbar\Nightwatch;

use Drupal\Core\Extension\ModuleInstallerInterface;
use Drupal\TestSite\TestSetupInterface;
use Drupal\user\Entity\Role;
use Drupal\user\RoleInterface;

/**
 * Sets up the site for testing the toolbar module.
 */
class ToolbarTestSetup implements TestSetupInterface {
    
    /**
     * {@inheritdoc}
     */
    public function setup() : void {
        $module_installer = \Drupal::service('module_installer');
        assert($module_installer instanceof ModuleInstallerInterface);
        $module_installer->install([
            'toolbar',
        ]);
        $role = Role::load(RoleInterface::ANONYMOUS_ID);
        foreach ([
            'access toolbar',
            'access administration pages',
            'administer modules',
            'administer site configuration',
            'administer account settings',
        ] as $permission) {
            $role->grantPermission($permission);
        }
        $role->save();
    }

}