magento-test/app/code/Magento/Customer/Test/Mftf/ActionGroup/DeleteCustomerFromAdminActionGroup.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="DeleteCustomerFromAdminActionGroup">
        <annotations>
            <description>Goes to the Admin Customers grid page. Deletes the provided Customer from the grid. Validates that the Success message is present and correct.</description>
        </annotations>
        <arguments>
            <argument name="customer" defaultValue="CustomerEntityOne"/>
        </arguments>

        <amOnPage url="{{AdminCustomerPage.url}}" stepKey="navigateToCustomers"/>
        <conditionalClick selector="{{AdminDataGridHeaderSection.clearFilters}}" dependentSelector="{{AdminDataGridHeaderSection.clearFilters}}" visible="true" stepKey="clickOnButtonToRemoveFiltersIfPresent"/>
        <fillField selector="{{AdminDataGridHeaderSection.search}}" userInput="{{customer.email}}" stepKey="fillSearch"/>
        <click selector="{{AdminDataGridHeaderSection.submitSearch}}" stepKey="clickSubmit"/>
        <waitForAjaxLoad stepKey="waitForLoadAjax"/>
        <click selector="{{AdminCustomerGridMainActionsSection.multicheck}}" stepKey="selectAll"/>
        <click selector="{{AdminCustomerGridMainActionsSection.actions}}" stepKey="clickActions"/>
        <click selector="{{AdminCustomerGridMainActionsSection.delete}}" stepKey="clickDelete"/>
        <waitForAjaxLoad stepKey="waitForLoadConfirmation"/>
        <click selector="{{AdminConfirmationModalSection.ok}}" stepKey="confirmDelete"/>
        <see selector="{{AdminMessagesSection.success}}" userInput="A total of 1 record(s) were deleted" stepKey="seeSuccess"/>
    </actionGroup>
</actionGroups>