AuthorizenetCheckoutSection.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
 /**
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
-->

<sections xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:noNamespaceSchemaLocation="urn:magento:mftf:Page/etc/SectionObject.xsd">
    <section name="AuthorizenetCheckoutSection">
        <element name="selectAuthorizenet" type="button" selector="#authorizenet_acceptjs"/>
        <element name="cardInput" type="input" selector="#authorizenet_acceptjs_cc_number"/>
        <element name="expMonth" type="select" selector="#authorizenet_acceptjs_expiration"/>
        <element name="expYear" type="select" selector="#authorizenet_acceptjs_expiration_yr"/>
        <element name="cvv" type="input" selector="#authorizenet_acceptjs_cc_cid"/>
        <element name="checkoutButton" type="button" selector="._active button.action.checkout"/>
    </section>
</sections>