UserDeleteTest.php

<?php

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',
    ];
    
    /**
     * Test deleting multiple users.
     */
    public function testUserDeleteMultiple() {
        $this->installSchema('system', [
            'sequences',
        ]);
        $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()));
    }

}