src/test/resources/testnames/main-suite.xml

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite name="Surefire debug suite">
    <test name="testGroup1">
        <classes>
            <class name="test.testnames.TestNamesFeature">
                <methods>
                    <include name="sampleOutputTest1"/>
                </methods>
            </class>
        </classes>
    </test>
    <test name="testGroup2">
        <classes>
            <class name="test.testnames.TestNamesFeature">
                <methods>
                    <include name="sampleOutputTest2"/>
                </methods>
            </class>
        </classes>
    </test>
</suite>