magento-test/app/code/Magento/Checkout/Test/Mftf/ActionGroup/FillShippingAddressOneStreetActionGroup.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="FillShippingAddressOneStreetActionGroup">
        <annotations>
            <description>Fills in the provided Address details in the 'Shipping Address' (Fills in Street Address 1 only) section of the Storefront Checkout page.</description>
        </annotations>
        <arguments>
            <argument name="address" type="entity"/>
        </arguments>
        
        <fillField stepKey="fillFirstName" selector="{{CheckoutShippingSection.firstName}}" userInput="{{address.firstname}}"/>
        <fillField stepKey="fillLastName" selector="{{CheckoutShippingSection.lastName}}" userInput="{{address.lastname}}"/>
        <fillField stepKey="fillCompany" selector="{{CheckoutShippingSection.company}}" userInput="{{address.company}}"/>
        <fillField stepKey="fillPhoneNumber" selector="{{CheckoutShippingSection.telephone}}" userInput="{{address.telephone}}"/>
        <fillField stepKey="fillStreetAddress" selector="{{CheckoutShippingSection.street}}" userInput="{{address.street[0]}}"/>
        <fillField stepKey="fillCityName" selector="{{CheckoutShippingSection.city}}" userInput="{{address.city}}"/>
        <selectOption stepKey="selectCounty" selector="{{CheckoutShippingSection.country}}" userInput="{{address.country_id}}"/>
        <fillField stepKey="fillZip" selector="{{CheckoutShippingSection.postcode}}" userInput="{{address.postcode}}"/>
    </actionGroup>
</actionGroups>