UserDeleteTest.php

<?php

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

use Drupal\Core\Database\Database;
use Drupal\KernelTests\KernelTestBase;
use Drupal\Tests\user\Traits\UserCreationTrait;
use Drupal\user\Entity\User;

/**
 * Tests deleting of user accounts.
 *
 * @group user
 */
class UserDeleteTest extends KernelTestBase {
  use UserCreationTrait;

  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'system',
    'user',
  ];

  /**
   * Tests deleting multiple users.
   */
  public function testUserDeleteMultiple() {
    $this
      ->installSchema('user', [
      'users_data',
    ]);
    $this
      ->installEntitySchema('user');

    // Create a few users with permissions, so roles will be created.
    $user_a = $this
      ->createUser([
      'access user profiles',
    ]);
    $user_b = $this
      ->createUser([
      'access user profiles',
    ]);
    $user_c = $this
      ->createUser([
      'access user profiles',
    ]);
    $uids = [
      $user_a
        ->id(),
      $user_b
        ->id(),
      $user_c
        ->id(),
    ];

    // These users should have a role
    $connection = Database::getConnection();
    $query = $connection
      ->select('user__roles', 'r');
    $roles_created = $query
      ->fields('r', [
      'entity_id',
    ])
      ->condition('entity_id', $uids, 'IN')
      ->countQuery()
      ->execute()
      ->fetchField();
    $this
      ->assertGreaterThan(0, $roles_created);

    // We should be able to load one of the users.
    $this
      ->assertNotNull(User::load($user_a
      ->id()));

    // Delete the users.
    $storage = $this->container
      ->get('entity_type.manager')
      ->getStorage('user');
    $users = $storage
      ->loadMultiple($uids);
    $storage
      ->delete($users);

    // Test if the roles assignments are deleted.
    $query = $connection
      ->select('user__roles', 'r');
    $roles_after_deletion = $query
      ->fields('r', [
      'entity_id',
    ])
      ->condition('entity_id', $uids, 'IN')
      ->countQuery()
      ->execute()
      ->fetchField();
    $this
      ->assertEquals(0, $roles_after_deletion);

    // Test if the users are deleted, User::load() will return NULL.
    $this
      ->assertNull(User::load($user_a
      ->id()));
    $this
      ->assertNull(User::load($user_b
      ->id()));
    $this
      ->assertNull(User::load($user_c
      ->id()));
  }

}