magento-test/app/code/Magento/Cms/Test/Mftf/ActionGroup/ClearWidgetsFromCMSContentActionGroup.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="ClearWidgetsFromCMSContentActionGroup">
        <annotations>
            <description>Goes to the Admin CMS Page Edit page for the Page ID number 2. Clears the Widget and replaces it with Text. PLEASE NOTE: The Page ID/Text are Hardcoded.</description>
        </annotations>

        <amOnPage url="{{AdminCmsPageEditPage.url('2')}}" stepKey="navigateToEditHomePagePage"/>
        <waitForPageLoad stepKey="waitEditHomePagePageToLoad"/>
        <click selector="{{CmsNewPagePageContentSection.header}}" stepKey="clickContentTab"/>
        <waitForElementNotVisible selector="{{TinyMCESection.CheckIfTabExpand}}" stepKey="waitForTabExpand"/>
        <executeJS function="jQuery('[id=\'cms_page_form_content_ifr\']').attr('name', 'preview-iframe')" stepKey="setPreviewFrameName"/>
        <switchToIFrame selector="preview-iframe" stepKey="switchToIframe"/>
        <fillField selector="{{TinyMCESection.EditorContent}}" userInput="Hello TinyMCE!" stepKey="clearWidgets"/>
        <switchToIFrame stepKey="switchOutFromIframe"/>
        <executeJS function="tinyMCE.activeEditor.setContent('Hello TinyMCE!');" stepKey="executeJSFillContent1"/>
        <click selector="{{InsertWidgetSection.save}}" stepKey="saveWidget"/>
        <waitForPageLoad stepKey="waitSaveToBeApplied"/>
        <see selector="{{AdminProductMessagesSection.successMessage}}" userInput="You saved the page." stepKey="seeSaveSuccess"/>
    </actionGroup>
</actionGroups>