magento-test/app/code/Magento/Sales/Test/Mftf/ActionGroup/AssertAdminCreditMemoGrandTotalActionGroup.xml

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

<actionGroups xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
              xsi:noNamespaceSchemaLocation="urn:magento:mftf:Test/etc/actionGroupSchema.xsd">
    <actionGroup name="AssertAdminCreditMemoGrandTotalActionGroup">
        <annotations>
            <description>Admin assert creditmemo grant total sum</description>
        </annotations>
        <arguments>
            <argument name="expectedGrandTotal" type="string" defaultValue="$123.00"/>
        </arguments>
        <grabTextFrom selector="{{AdminCreditMemoTotalSection.grandTotal}}" stepKey="getGrandTotal"/>
        <assertEquals stepKey="assertGrandTotalValue">
			<actualResult type="variable">getGrandTotal</actualResult>
			<expectedResult type="string">{{expectedGrandTotal}}</expectedResult>
        </assertEquals>
    </actionGroup>
</actionGroups>