Test::Unit::GTestRunner is a Unit testing framework helper class
If you just want to run a unit test (suite), try it like this:
Try "perldoc gtestrunner" or "man gtestrunner" for more information.
This class is a GUI test runner using the Gimp Toolkit Gtk+ (which is called Gtk2 in Perl). You can use it if you want to integrate the testing framework into your own application.
For a description of the graphical user interface, please see gtestrunner(1).