To create a simple web page with a stateless action method, select File → New → Seam Action:

Enter the name of the Seam component. JBoss Developer Studio selects sensible defaults for other fields:

Finally, hit Finish.

Now go to http://localhost:8080/helloworld/ping.seam and click the button. You can see the code behind this action is in the project src directory. Add a breakpoint to the ping() method, and click the button again.

Finally, open the helloworld-test project, locate PingTest class, right click on it, and choose Run As → TestNG Test: