UserEditedOwnAccountTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\user\Functional;

use Drupal\Tests\BrowserTestBase;
use Drupal\user\UserInterface;
use PHPUnit\Framework\Attributes\Group;
use PHPUnit\Framework\Attributes\RunTestsInSeparateProcesses;

/**
 * Tests user edited own account can still log in.
 */
class UserEditedOwnAccountTest extends BrowserTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * Tests that a user who edits their own account can still log in.
   */
  public function testUserEditedOwnAccount() : void {
    // Change account setting 'Who can register accounts?' to Administrators
    // only.
    $this->config('user.settings')
      ->set('register', UserInterface::REGISTER_ADMINISTRATORS_ONLY)
      ->save();
    // Create a new user account and log in.
    $account = $this->drupalCreateUser([
      'change own username',
    ]);
    $this->drupalLogin($account);
    // Change own username.
    $edit = [];
    $edit['name'] = $this->randomMachineName();
    $this->drupalGet('user/' . $account->id() . '/edit');
    $this->submitForm($edit, 'Save');
    // Log out.
    $this->drupalLogout();
    // Set the new name on the user account and attempt to log back in.
    $account->name = $edit['name'];
    $this->drupalLogin($account);
  }

}