<?php
/**
 * Copyright © 2015 Magento. All rights reserved.
 * See COPYING.txt for license details.
 */

// refresh report statistics
$objectManager = \Magento\TestFramework\Helper\Bootstrap::getObjectManager();
/** @var \Magento\Tax\Model\ResourceModel\Report\Tax $reportResource */
$reportResource = $objectManager->create('Magento\Tax\Model\ResourceModel\Report\Tax');
$reportResource->beginTransaction();
// prevent table truncation by incrementing the transaction nesting level counter
try {
    $reportResource->aggregate();
    $reportResource->commit();
} catch (\Exception $e) {
    $reportResource->rollBack();
    throw $e;
}
