magento-test/app/code/Magento/Sales/Test/Mftf/ActionGroup/StorefrontCustomerOrdersViewOrderActionGroup.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="StorefrontCustomerOrdersViewOrderActionGroup">
        <annotations>
            <description>Navigate to customer dashboard -> orders. Press 'View Order' button for specified order number. Notice: customer should be logged in.</description>
        </annotations>
        <arguments>
            <argument name="orderNumber" type="string" defaultValue="000000001"/>
        </arguments>

        <amOnPage url="{{StorefrontCustomerOrdersHistoryPage.url}}" stepKey="openCustomerOrdersHistoryPage"/>
        <click selector="{{StorefrontCustomerOrdersGridSection.orderView(orderNumber)}}" stepKey="clickViewOrderButton"/>
    </actionGroup>
</actionGroups>