magento-test/app/code/Magento/SalesRule/Test/Mftf/Section/AdminOrderItemsOrderedSection.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
 /**
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
-->

<sections xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:noNamespaceSchemaLocation="urn:magento:mftf:Page/etc/SectionObject.xsd">
    <section name="AdminOrderItemsOrderedSection">
        <element name="itemDiscountAmountByProductName" type="text" selector="//table[contains(@class,'edit-order-table')]//div[contains(text(),'{{productName}}')]/ancestor::tr//td[contains(@class, 'col-discont')]//span" parameterized="true"/>
    </section>
</sections>