<?php
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */

use Magento\Quote\Model\QuoteFactory;
use Magento\Quote\Model\ResourceModel\Quote as QuoteResource;
use Magento\TestFramework\Helper\Bootstrap;
use Magento\TestFramework\Workaround\Override\Fixture\Resolver;

Resolver::getInstance()->requireDataFixture('Magento/Checkout/_files/quote_with_address.php');
/** @var QuoteFactory $quoteFactory */
$quoteFactory = Bootstrap::getObjectManager()->get(QuoteFactory::class);
/** @var QuoteResource $quoteResource */
$quoteResource = Bootstrap::getObjectManager()->get(QuoteResource::class);
$quote = $quoteFactory->create();
$quoteResource->load($quote, 'test_order_1', 'reserved_order_id');

/** @var $rate \Magento\Quote\Model\Quote\Address\Rate */
$rate = \Magento\TestFramework\Helper\Bootstrap::getObjectManager()->create(
    \Magento\Quote\Model\Quote\Address\Rate::class
);
$rate->setCode('freeshipping_freeshipping');
$rate->getPrice(1);

$quote->getShippingAddress()->setShippingMethod('freeshipping_freeshipping');
$quote->getShippingAddress()->addShippingRate($rate);
$quote->getPayment()->setMethod('checkmo');

$quote->collectTotals();
$quote->save();
$quote->getPayment()->setMethod('checkmo');

/** @var \Magento\Quote\Model\QuoteIdMask $quoteIdMask */
$quoteIdMask = \Magento\TestFramework\Helper\Bootstrap::getObjectManager()
    ->create(\Magento\Quote\Model\QuoteIdMaskFactory::class)
    ->create();
$quoteIdMask->setQuoteId($quote->getId());
$quoteIdMask->setDataChanges(true);
$quoteIdMask->save();