testng.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite thread-count="3" name="Suite" parallel="tests">
  <test name="FirstTest">
  <parameter name="browser" value="firefox"/>
  <parameter name="version" value="20.0"/>
  <parameter name="platform" value="MAC"/>
    <classes>
      <class name="bs.ParallelTest"/>
    </classes>
  </test> <!-- Test -->
  <test name="SecondTest">
  <parameter name="browser" value="chrome"/>
  <parameter name="version" value="26.0"/>
  <parameter name="platform" value="WINDOWS"/>
    <classes>
      <class name="bs.ParallelTest"/>
    </classes>
  </test> <!-- Test -->
  <test name="ThirdTest">
  <parameter name="browser" value="safari"/>
  <parameter name="version" value="6.0"/>
  <parameter name="platform" value="MAC"/>
    <classes>
      <class name="bs.ParallelTest"/>
    </classes>
  </test> <!-- Test -->
</suite> <!-- Suite -->