galaxy/test/functional/tools/multiple_versions_v01.xml

<tool id="multiple_versions" name="multiple_versions" version="0.1">
    <command><![CDATA[
        echo "Version 0.1" > '$out_file1'
    ]]></command>
    <inputs>
        <param name="inttest" value="1" type="integer" />
    </inputs>
    <outputs>
        <data name="out_file1" format="txt" />
    </outputs>
    <tests>
        <test>
            <param name="intest" value="1" />
            <output name="out_file1" file="multiple_versions_0.1.txt">
                <assert_contents>
                    <has_line line="Version 0.1" />
                </assert_contents>
            </output>
        </test>
    </tests>
</tool>