Need help with Test

Hello,

I just learn PHPUnit (i am newbie for test suite).

I try setting PHPUnit on netbeans project. I try following user guide.
But no success.

First, Fatal error: Class 'Test\CIUnitTestCase' not found
I modify the test/_support/CIUnitTestCase.php adding : require 'system/Test/CIUnitTestCase.php';

Then another error not found

I just think the path for testing not set properly.
Where the file for set this path (for testing)?