magento-test/app/code/Magento/Cms/Test/Mftf/ActionGroup/AdminCMSPageMassActionSelectActionGroup.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="AdminCMSPageMassActionSelectActionGroup">
        <annotations>
            <description>Selects the provided Action in the 'Mass Action' drop down menu on the Admin Pages grid.</description>
        </annotations>
        <arguments>
            <argument name="action" type="string"/>
        </arguments>

        <click selector="{{CmsPagesPageActionsSection.massActionsButton}}" stepKey="clickMassActionDropdown"/>
        <click selector="{{CmsPagesPageActionsSection.massActionsOption(action)}}" stepKey="clickAction"/>
        <waitForPageLoad stepKey="waitForPageToReload"/>
    </actionGroup>
</actionGroups>