How to use PHPUnit in a MVC project

Hi

How to use PHPUnit in my Zend Framework MVC project. Say, for testing one controller's action, some model class function of my own or a view scripts ???

How to prepare those kind of tests ? I do not know too much, but I can not imagine how to setup the test, as all the proccess happens, from the front controller in the bootstrapper to the end.

Thanks

Harold J. A. Chelala