DrupalTestBrowser example

$fs->mkdir($full_path);
    }
    return $full_path;
  }

  /** * Set up the Mink session manager. * * @return \Behat\Mink\Session */
  protected function initMink() {
    $client = new DrupalTestBrowser();
    $client->followMetaRefresh(TRUE);
    $driver = new BrowserKitDriver($client);
    $session = new Session($driver);
    $this->mink = new Mink();
    $this->mink->registerSession('default', $session);
    $this->mink->setDefaultSessionName('default');
    $session->start();
    return $session;
  }

  /** * Get the Mink instance. * * Use the Mink object to perform assertions against the content returned by a * request. * * @return \Behat\Mink\Mink * The Mink object. */

// Get and check default driver class from environment if available.     if ($minkDriverClass = getenv('MINK_DRIVER_CLASS')) {
      if (class_exists($minkDriverClass)) {
        $this->minkDefaultDriverClass = $minkDriverClass;
      }
      else {
        throw new \InvalidArgumentException("Can't instantiate provided $minkDriverClass class by environment as default driver class.");
      }
    }

    if ($this->minkDefaultDriverClass === BrowserKitDriver::class) {
      $driver = new $this->minkDefaultDriverClass(new DrupalTestBrowser());
    }
    elseif (is_array($this->minkDefaultDriverArgs)) {
      // Use ReflectionClass to instantiate class with received params.       $reflector = new \ReflectionClass($this->minkDefaultDriverClass);
      $driver = $reflector->newInstanceArgs($this->minkDefaultDriverArgs);
    }
    else {
      $driver = new $this->minkDefaultDriverClass();
    }
    return $driver;
  }