magento-test/app/code/Magento/Email/Test/Mftf/ActionGroup/AdminUploadTransactionEmailsImageActionGroup.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="AdminUploadTransactionEmailsImageActionGroup">
        <annotations>
            <description>Upload logo image for email</description>
        </annotations>
        <arguments>
            <argument name="image" type="string" defaultValue="{{MagentoLogo.file}}"/>
            <argument name="width" type="string" defaultValue="200"/>
            <argument name="height" type="string" defaultValue="100"/>
        </arguments>

        <conditionalClick selector="{{AdminDesignConfigSection.transactionalEmailSectionHeader}}" dependentSelector="{{AdminDesignConfigSection.transactionalEmailSectionBody}}" visible="false" stepKey="openTransactionalEmailSection"/>
        <waitForElementVisible selector="{{AdminDesignConfigSection.logoImageAlt}}" stepKey="waitVisibleUploadLogo"/>
        <attachFile selector="{{AdminDesignConfigSection.logoUpload}}" userInput="{{image}}" stepKey="attachLogo"/>
        <waitForElementVisible selector="{{AdminDesignConfigSection.logoPreview}}" stepKey="waitingForLogoToUpload"/>
        <seeElement selector="{{AdminDesignConfigSection.logoPreview}}" stepKey="logoPreviewIsVisible"/>
        <fillField selector="{{AdminDesignConfigSection.logoImageAlt}}" userInput="{{image}}" stepKey="fillFieldImageAlt"/>
        <fillField selector="{{AdminDesignConfigSection.logoImageWidth}}" userInput="{{width}}" stepKey="fillFieldImageWidth"/>
        <fillField selector="{{AdminDesignConfigSection.logoImageHeight}}" userInput="{{height}}" stepKey="fillFieldImageHeight"/>
    </actionGroup>
</actionGroups>