idea/testData/modules.xml/multiple.xml

<modules>
    <!-- Module script for production -->
    <module name="name" type="java-production" outputDir="output">
        <sources path="s1"/>
        <sources path="s2"/>
        <!-- Java source roots -->
        <!-- Classpath -->
        <classpath path="cp1"/>
        <classpath path="cp2"/>
    </module>
    <!-- Module script for tests -->
    <module name="name2" type="java-test" outputDir="output2">
        <sources path="s12"/>
        <sources path="s22"/>
        <!-- Java source roots -->
        <!-- Classpath -->
        <classpath path="cp12"/>
        <classpath path="cp22"/>
    </module>
</modules>