src/test/resources/testng-single.xml

<!DOCTYPE suite SYSTEM "http://beust.com/testng/testng-1.0.dtd" >
  
<suite name="SingleSuite" verbose="2" parallel="false" thread-count="4"
    data-provider-thread-count="3">

  <parameter name="n" value="42" />

  <test name="Regression2" preserve-order="true">
    <parameter name="string" value="s"/>

    <groups>
      <dependencies>
        <group name="c" depends-on="a  b" />
        <group name="z" depends-on="c" />
      </dependencies>
    </groups>

    <classes>
      <class name="test.tmp.A">
       </class>
     </classes>
  </test>

</suite>