magento-test/app/code/Magento/Deploy/Test/Mftf/Suite/MagentoDeveloperModeOnlyTestSuite.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
 /**
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
-->
<suites xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:mftf:Suite/etc/suiteSchema.xsd">
    <suite name="MagentoDeveloperModeOnlyTestSuite">
        <before>
            <magentoCLI command="deploy:mode:set developer" stepKey="enableDeveloperMode"/>
        </before>
        <include>
            <group name="developer_mode_only"/>
        </include>
        <after>
            <!-- Command should be uncommented once MQE-1711 is resolved -->
            <comment userInput="Command should be uncommented once MQE-1711 is resolved" stepKey="comment" />
            <!-- <magentoCLI command="deploy:mode:set production" stepKey="enableProductionMode"/> -->
        </after>
    </suite>
</suites>