magento-test/app/code/Magento/Customer/Test/Mftf/ActionGroup/AdminSaveCustomerAndAssertSuccessMessageActionGroup.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">
    <!-- Save Customer and Assert Success Message -->
    <actionGroup name="AdminSaveCustomerAndAssertSuccessMessage">
        <annotations>
            <description>Clicks on the Save button. Validates that the Success Message is present and correct. PLEASE NOTE: The message is Hardcoded.</description>
        </annotations>
        
        <click selector="{{AdminCustomerMainActionsSection.saveButton}}" stepKey="saveCustomer"/>
        <see userInput="You saved the customer" selector="{{AdminCustomerMessagesSection.successMessage}}" stepKey="seeMessage"/>
    </actionGroup>
</actionGroups>