Behat get current user

FeatureContext.php

<?php

declare(strict_types = 1);

use Drupal\DrupalExtension\Context\RawDrupalContext;

/**
 * Defines step definitions that are generally useful for the project.
 */
class FeatureContext extends RawDrupalContext {
  /**
   * @return \Drupal\Core\Entity\EntityInterface|null
   * @throws \Drupal\Component\Plugin\Exception\InvalidPluginDefinitionException
   * @throws \Drupal\Component\Plugin\Exception\PluginNotFoundException
   */
  public function getCurrentUser() {
    $this->getSession()->visit($this->locatePath($this->getDrupalText('login_url')));
    $user_url = $this->getSession()->getCurrentUrl();
    preg_match('/(?<=\/)\d+/', $user_url, $matches);
    if ($matches) {
      $user_id = reset($matches);
      $user = \Drupal::entityTypeManager()
        ->getStorage('user')->load($user_id);
      if ($user) {
        return $user;
      }
    }

    return NULL;
  }

}