<?php

declare(strict_types=1);

namespace Drupal\Tests\user\Functional;

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

/**
 * Tests the create user administration page.
 */
#[Group('user')]
#[RunTestsInSeparateProcesses]
class UserCreateFailMailTest extends BrowserTestBase {

  /**
   * {@inheritdoc}
   */
  protected static $modules = ['system_mail_failure_test'];

  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';

  /**
   * Tests the create user administration page.
   */
  public function testUserAdd(): void {
    $user = $this->drupalCreateUser(['administer users']);
    $this->drupalLogin($user);

    // Replace the mail functionality with a fake, malfunctioning service.
    $this->config('system.mail')->set('interface.default', 'test_php_mail_failure')->save();
    // Create a user, but fail to send an email.
    $name = $this->randomMachineName();
    $edit = [
      'name' => $name,
      'mail' => $this->randomMachineName() . '@example.com',
      'pass[pass1]' => $pass = $this->randomString(),
      'pass[pass2]' => $pass,
      'notify' => TRUE,
    ];
    $this->drupalGet('admin/people/create');
    $this->submitForm($edit, 'Create new account');

    $this->assertSession()->pageTextContains('Unable to send email. Contact the site administrator if the problem persists.');
    $this->assertSession()->pageTextNotContains('A welcome message with further instructions has been emailed to the new user ' . $edit['name'] . '.');
  }

}
