magento-test/app/code/Magento/Customer/Test/Mftf/ActionGroup/AdminAssertCustomerNoDefaultBillingAddressActionGroup.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">
    <!-- Assert Customer Have No Default Billing Address -->
    <actionGroup name="AdminAssertCustomerNoDefaultBillingAddress">
        <annotations>
            <description>Validates that a Customer does NOT have a Default Billing Address assigned. PLEASE NOTE: The error message is hardcoded.</description>
        </annotations>

        <click selector="{{AdminEditCustomerAddressesSection.addresses}}" stepKey="proceedToAddresses"/>
        <see userInput="The customer does not have default billing address" selector="{{AdminCustomerAddressesDefaultBillingSection.address}}" stepKey="see"/>
    </actionGroup>
</actionGroups>