magento-test/app/code/Magento/Customer/Test/Mftf/ActionGroup/StorefrontAddNewCustomerAddressActionGroup.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="StorefrontAddNewCustomerAddressActionGroup">
        <annotations>
            <description>Goes to the Storefront Customer Add New Address page. Fills in the provided Address details. Clicks on Save.</description>
        </annotations>
        <arguments>
            <argument name="Address"/>
        </arguments>

        <amOnPage url="customer/address/new/" stepKey="OpenCustomerAddNewAddress"/>
        <fillField  stepKey="fillFirstName" userInput="{{Address.firstname}}" selector="{{StorefrontCustomerAddressFormSection.firstName}}"/>
        <fillField  stepKey="fillLastName" userInput="{{Address.lastname}}" selector="{{StorefrontCustomerAddressFormSection.lastName}}"/>
        <fillField  stepKey="fillCompanyName" userInput="{{Address.company}}" selector="{{StorefrontCustomerAddressFormSection.company}}"/>
        <fillField  stepKey="fillPhoneNumber" userInput="{{Address.telephone}}" selector="{{StorefrontCustomerAddressFormSection.phoneNumber}}"/>
        <fillField  stepKey="fillStreetAddress" userInput="{{Address.street[0]}}" selector="{{StorefrontCustomerAddressFormSection.streetAddress}}"/>
        <fillField  stepKey="fillCity" userInput="{{Address.city}}" selector="{{StorefrontCustomerAddressFormSection.city}}"/>
        <selectOption  stepKey="selectState" userInput="{{Address.state}}" selector="{{StorefrontCustomerAddressFormSection.state}}"/>
        <fillField  stepKey="fillZip" userInput="{{Address.postcode}}" selector="{{StorefrontCustomerAddressFormSection.zip}}"/>
        <selectOption  stepKey="selectCountry" userInput="{{Address.country}}" selector="{{StorefrontCustomerAddressFormSection.country}}"/>
        <click stepKey="saveCustomerAddress" selector="{{StorefrontCustomerAddressFormSection.saveAddress}}"/>
        <see userInput="You saved the address." stepKey="verifyAddressAdded"/>
    </actionGroup>
</actionGroups>