some-fixture_rollback.php

<?php
/**
 * Copyright (c) 2019 TechDivision GmbH
 * All rights reserved
 *
 * This product includes proprietary software developed at TechDivision GmbH, Germany
 * For more information see http://www.techdivision.com/
 *
 * To obtain a valid license for using this software please contact us at
 * license@techdivision.com
 */
declare(strict_types=1);

use Magento\Framework\Api\SearchCriteriaBuilder;
use Magento\Framework\Registry;
use Magento\Sales\Api\OrderRepositoryInterface;
use Magento\TestFramework\Helper\Bootstrap;

/** @var Registry $registry */
$registry = Bootstrap::getObjectManager()->get(Registry::class);
$registry->unregister('isSecureArea');
$registry->register('isSecureArea', true);

/** @var OrderRepositoryInterface $orderRepository */
$orderRepository = Bootstrap::getObjectManager()->get(OrderRepositoryInterface::class);

/** @var SearchCriteriaBuilder $searchCriteriaBuilder */
$searchCriteriaBuilder = Bootstrap::getObjectManager()->get(SearchCriteriaBuilder::class);

$searchCriteria = $searchCriteriaBuilder->addFilter(
    'increment_id',
    'METEXAMPLE-%',
    'like'
)->create();

$orders = $orderRepository->getList($searchCriteria);
foreach ($orders->getItems() as $order) {
    $orderRepository->delete($order);
}

$registry->unregister('isSecureArea');
$registry->register('isSecureArea', false);