Magento2 Sandbox Script - http://www.blog.magepsycho.com/sandbox-script-quick-testing-magento2/

Magento2-Sandbox-Script.php

<?php
/**
 * @author Raj KB<magepsycho@gmail.com>
 * @website http://www.magepsycho.com
 * @blog http://www.blog.magepsycho.com/sandbox-script-quick-testing-magento2/
 */
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

require __DIR__ . '/../app/bootstrap.php';
$bootstrap = \Magento\Framework\App\Bootstrap::create(BP, $_SERVER);

$obj = $bootstrap->getObjectManager();

$state = $obj->get('Magento\Framework\App\State');
$state->setAreaCode('frontend');

$quote = $obj->get('Magento\Checkout\Model\Session')->getQuote()->load(1);
Zend_Debug::dump($quote->getOrigData());