magento-test/app/code/Magento/Store/Test/Mftf/ActionGroup/DeleteCustomWebsiteActionGroup.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="DeleteCustomWebsiteActionGroup">
        <annotations>
            <description>Goes to the Admin Stores grid page. Searches the grid for the provided Website Name. Deletes the provided Website Name. Validates that the Success Message is present and correct.</description>
        </annotations>
        <arguments>
            <argument name="websiteName" defaultValue="customWebsite.name"/>
        </arguments>

        <amOnPage url="{{AdminSystemStorePage.url}}" stepKey="amOnTheStorePage"/>
        <click selector="{{AdminDataGridHeaderSection.clearFilters}}" stepKey="clickOnResetButton"/>
        <fillField userInput="{{websiteName}}" selector="{{AdminStoresGridSection.websiteFilterTextField}}" stepKey="fillSearchWebsiteField"/>
        <click selector="{{AdminStoresGridSection.searchButton}}" stepKey="clickSearchButton"/>
        <see userInput="{{websiteName}}" selector="{{AdminStoresGridSection.websiteNameInFirstRow}}" stepKey="verifyThatCorrectWebsiteFound"/>
        <click selector="{{AdminStoresGridSection.websiteNameInFirstRow}}" stepKey="clickEditExistingWebsite"/>
        <waitForPageLoad stepKey="waitForPageLoadAfterWebsiteSelected" time="30"/>
        <click selector="{{AdminStoresMainActionsSection.deleteButton}}" stepKey="clickDeleteWebsiteButtonOnEditStorePage"/>
        <selectOption userInput="No" selector="{{AdminStoresDeleteWebsiteSection.createDbBackup}}" stepKey="setCreateDbBackupToNo"/>
        <click selector="{{AdminStoresDeleteWebsiteSection.deleteButton}}" stepKey="clickDeleteButtonOnDeleteWebsitePage"/>
        <see selector="{{AdminMessagesSection.success}}" userInput="You deleted the website." stepKey="checkSuccessMessage"/>
    </actionGroup>
</actionGroups>