testng.xml

<?xml version="1.0" encoding="UTF-8"?>
<suite name="Headless Browser Demo" verbose="10" parallel="false" thread-count="1">

    <test name="Open Step2QA in Headless PhantomJS.">
        <classes>
            <class name="com.step2qa.HeadlessPhantomJS">
                <methods>
                    <include name="open_headless_phantomJS"/>
                </methods>
            </class>
        </classes>
    </test>

    <test name="Open Step2QA in Headless Google Chrome.">
        <classes>
            <class name="com.step2qa.HeadlessChrome">
                <methods>
                    <include name="open_headless_chrome"/>
                </methods>
            </class>
        </classes>
    </test>

    <test name="Open Step2QA in Headless Mozilla Firefox.">
        <classes>
            <class name="com.step2qa.HeadlessFirefox">
                <methods>
                    <include name="open_headless_firefox"/>
                </methods>
            </class>
        </classes>
    </test>

</suite>