I am working on a multi site where there is no database defined in the default directory, so whenever I run a Functional test extending BrowserTestBase I get the following error:

copy(/var/www/dnsw-drupal-int/docroot/sites/default/default.settings.php): failed to open stream: No such file or directory 

I’m not really sure why the files were removed in the first place and I don’t want to add them back in there in case there was a good reason for removing them. Is there a way to define the site to use for the test?

My simple test:

<?php  namespace Drupal\Tests\moduel\Functional;  use Drupal\Core\Url; use Drupal\Tests\BrowserTestBase;  /**  * Simple test to ensure that main page loads with module enabled.  *  * @group dnsw_scheduler_workbench_integration  */ class LoadTest extends BrowserTestBase {    /**    * Modules to enable.    *    * @var array    */   public static $  modules = ['my_module'];    /**    * A user with permission to administer site configuration.    *    * @var \Drupal\user\UserInterface    */   protected $  user;    /**    * {@inheritdoc}    */   protected function setUp() {     parent::setUp();     $  this->user = $  this->drupalCreateUser(['administer site configuration']);     $  this->drupalLogin($  this->user);   }    /**    * Tests that the home page loads with a 200 response.    */   public function testLoad() {     $  this->drupalGet(Url::fromRoute('<front>'));     $  this->assertResponse(200);   }  }