magento-test/app/code/Magento/AdminNotification/Test/Mftf/ActionGroup/AdminSystemMessagesActionGroup.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="AdminSystemMessagesWarningActionGroup">
        <annotations>
            <description>Check warning system message exists.</description>
        </annotations>
        <arguments>
            <argument name="message" type="string"/>
        </arguments>

        <waitForElementVisible selector="{{AdminSystemMessagesSection.systemMessagesDropdown}}" stepKey="waitMessagesDropdownAppears"/>
        <conditionalClick selector="{{AdminSystemMessagesSection.systemMessagesDropdown}}" dependentSelector="{{AdminSystemMessagesSection.messagesBlock}}" visible="false" stepKey="openMessagesBlockIfCollapsed"/>
        <see userInput="{{message}}" selector="{{AdminSystemMessagesSection.warning}}" stepKey="seeWarningMessage"/>
    </actionGroup>
</actionGroups>