<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
declare(strict_types=1);

use Magento\Customer\Model\CustomerRegistry;
use Magento\Integration\Api\CustomerTokenServiceInterface;
use Magento\TestFramework\Helper\Bootstrap;
use Magento\TestFramework\Workaround\Override\Fixture\Resolver;

Resolver::getInstance()->requireDataFixture('Magento/Customer/_files/customer.php');

$objectManager = Bootstrap::getObjectManager();
/** @var CustomerRegistry $customerRegistry */
$customerRegistry = $objectManager->create(CustomerRegistry::class);
$customer = $customerRegistry->retrieve(1);
/** @var CustomerTokenServiceInterface $customerTokenService */
$customerTokenService = $objectManager->get(CustomerTokenServiceInterface::class);

$customerTokenService->createCustomerAccessToken($customer->getEmail(), 'password');